[{"doi":"10.1007/s11740-020-00973-w","date_updated":"2023-04-28T09:20:41Z","language":[{"iso":"eng"}],"title":"Improvement of a rivet geometry for the self-piercing riveting of high-strength steel and multi-material joints","publication_status":"published","department":[{"_id":"157"}],"intvolume":" 14","_id":"19973","page":"417-423","year":"2020","citation":{"ieee":"B. Uhe, C.-M. Kuball, M. Merklein, and G. Meschut, “Improvement of a rivet geometry for the self-piercing riveting of high-strength steel and multi-material joints,” Production Engineering, vol. 14, pp. 417–423, 2020, doi: 10.1007/s11740-020-00973-w.","short":"B. Uhe, C.-M. Kuball, M. Merklein, G. Meschut, Production Engineering 14 (2020) 417–423.","bibtex":"@article{Uhe_Kuball_Merklein_Meschut_2020, title={Improvement of a rivet geometry for the self-piercing riveting of high-strength steel and multi-material joints}, volume={14}, DOI={10.1007/s11740-020-00973-w}, journal={Production Engineering}, author={Uhe, Benedikt and Kuball, Clara-Maria and Merklein, Marion and Meschut, Gerson}, year={2020}, pages={417–423} }","mla":"Uhe, Benedikt, et al. “Improvement of a Rivet Geometry for the Self-Piercing Riveting of High-Strength Steel and Multi-Material Joints.” Production Engineering, vol. 14, 2020, pp. 417–23, doi:10.1007/s11740-020-00973-w.","ama":"Uhe B, Kuball C-M, Merklein M, Meschut G. Improvement of a rivet geometry for the self-piercing riveting of high-strength steel and multi-material joints. Production Engineering. 2020;14:417-423. doi:10.1007/s11740-020-00973-w","apa":"Uhe, B., Kuball, C.-M., Merklein, M., & Meschut, G. (2020). Improvement of a rivet geometry for the self-piercing riveting of high-strength steel and multi-material joints. Production Engineering, 14, 417–423. https://doi.org/10.1007/s11740-020-00973-w","chicago":"Uhe, Benedikt, Clara-Maria Kuball, Marion Merklein, and Gerson Meschut. “Improvement of a Rivet Geometry for the Self-Piercing Riveting of High-Strength Steel and Multi-Material Joints.” Production Engineering 14 (2020): 417–23. https://doi.org/10.1007/s11740-020-00973-w."},"type":"journal_article","user_id":"38131","abstract":[{"text":"As a result of lightweight design, increased use is being made of high-strength steel and aluminium in car bodies. Self-piercing riveting is an established technique for joining these materials. The dissimilar properties of the two materials have led to a number of different rivet geometries in the past. Each rivet geometry fulfils the requirements of the materials within a limited range. In the present investigation, an improved rivet geometry is developed, which permits the reliable joining of two material combinations that could only be joined by two different rivet geometries up until now. Material combination 1 consists of high-strength steel on both sides, while material combination 2 comprises aluminium on the punch side and high-strength steel on the die side. The material flow and the stress and strain conditions prevailing during the joining process are analysed by means of numerical simulation. The rivet geometry is then improved step-by-step on the basis of this analysis. Finally, the improved rivet geometry is manufactured and the findings of the investigation are verified in experimental joining tests.","lang":"eng"}],"article_type":"original","date_created":"2020-10-12T08:14:13Z","status":"public","volume":14,"publication":"Production Engineering","keyword":["Self-piercing riveting","Joining technology","Rivet geometry","Multi-material design","High-strength steel","Aluminium"],"quality_controlled":"1","author":[{"full_name":"Uhe, Benedikt","first_name":"Benedikt","id":"38131","last_name":"Uhe"},{"first_name":"Clara-Maria","full_name":"Kuball, Clara-Maria","last_name":"Kuball"},{"last_name":"Merklein","first_name":"Marion","full_name":"Merklein, Marion"},{"last_name":"Meschut","id":"32056","first_name":"Gerson","orcid":"0000-0002-2763-1246","full_name":"Meschut, Gerson"}]},{"intvolume":" 88","_id":"46334","date_updated":"2023-10-16T13:07:59Z","doi":"https://doi.org/10.1016/j.asoc.2019.105901","language":[{"iso":"eng"}],"year":"2020","type":"journal_article","citation":{"chicago":"Bossek, Jakob, Pascal Kerschke, and Heike Trautmann. “A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms.” Applied Soft Computing 88 (2020): 105901. https://doi.org/10.1016/j.asoc.2019.105901.","ama":"Bossek J, Kerschke P, Trautmann H. A multi-objective perspective on performance assessment and automated selection of single-objective optimization algorithms. Applied Soft Computing. 2020;88:105901. doi:https://doi.org/10.1016/j.asoc.2019.105901","apa":"Bossek, J., Kerschke, P., & Trautmann, H. (2020). A multi-objective perspective on performance assessment and automated selection of single-objective optimization algorithms. Applied Soft Computing, 88, 105901. https://doi.org/10.1016/j.asoc.2019.105901","bibtex":"@article{Bossek_Kerschke_Trautmann_2020, title={A multi-objective perspective on performance assessment and automated selection of single-objective optimization algorithms}, volume={88}, DOI={https://doi.org/10.1016/j.asoc.2019.105901}, journal={Applied Soft Computing}, author={Bossek, Jakob and Kerschke, Pascal and Trautmann, Heike}, year={2020}, pages={105901} }","mla":"Bossek, Jakob, et al. “A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms.” Applied Soft Computing, vol. 88, 2020, p. 105901, doi:https://doi.org/10.1016/j.asoc.2019.105901.","short":"J. Bossek, P. Kerschke, H. Trautmann, Applied Soft Computing 88 (2020) 105901.","ieee":"J. Bossek, P. Kerschke, and H. Trautmann, “A multi-objective perspective on performance assessment and automated selection of single-objective optimization algorithms,” Applied Soft Computing, vol. 88, p. 105901, 2020, doi: https://doi.org/10.1016/j.asoc.2019.105901."},"page":"105901","abstract":[{"text":"We build upon a recently proposed multi-objective view onto performance measurement of single-objective stochastic solvers. The trade-off between the fraction of failed runs and the mean runtime of successful runs – both to be minimized – is directly analyzed based on a study on algorithm selection of inexact state-of-the-art solvers for the famous Traveling Salesperson Problem (TSP). Moreover, we adopt the hypervolume indicator (HV) commonly used in multi-objective optimization for simultaneously assessing both conflicting objectives and investigate relations to commonly used performance indicators, both theoretically and empirically. Next to Penalized Average Runtime (PAR) and Penalized Quantile Runtime (PQR), the HV measure is used as a core concept within the construction of per-instance algorithm selection models offering interesting insights into complementary behavior of inexact TSP solvers.","lang":"eng"}],"user_id":"15504","title":"A multi-objective perspective on performance assessment and automated selection of single-objective optimization algorithms","author":[{"last_name":"Bossek","first_name":"Jakob","full_name":"Bossek, Jakob"},{"full_name":"Kerschke, Pascal","first_name":"Pascal","last_name":"Kerschke"},{"first_name":"Heike","orcid":"0000-0002-9788-8282","full_name":"Trautmann, Heike","last_name":"Trautmann","id":"100740"}],"publication":"Applied Soft Computing","keyword":["Algorithm selection","Multi-objective optimization","Performance measurement","Combinatorial optimization","Traveling Salesperson Problem"],"department":[{"_id":"34"},{"_id":"819"}],"status":"public","date_created":"2023-08-04T07:42:26Z","publication_identifier":{"issn":["1568-4946"]},"volume":88},{"author":[{"full_name":"Bossek, Jakob","orcid":"0000-0002-4121-4668","first_name":"Jakob","id":"102979","last_name":"Bossek"},{"first_name":"Frank","full_name":"Neumann, Frank","last_name":"Neumann"},{"first_name":"Pan","full_name":"Peng, Pan","last_name":"Peng"},{"last_name":"Sudholt","full_name":"Sudholt, Dirk","first_name":"Dirk"}],"publisher":"Association for Computing Machinery","publication":"Proceedings of the Genetic and Evolutionary Computation Conference","keyword":["dynamic optimization","evolutionary algorithms","running time analysis","theory"],"status":"public","date_created":"2023-11-14T15:58:53Z","abstract":[{"text":"Dynamic optimization problems have gained significant attention in evolutionary computation as evolutionary algorithms (EAs) can easily adapt to changing environments. We show that EAs can solve the graph coloring problem for bipartite graphs more efficiently by using dynamic optimization. In our approach the graph instance is given incrementally such that the EA can reoptimize its coloring when a new edge introduces a conflict. We show that, when edges are inserted in a way that preserves graph connectivity, Randomized Local Search (RLS) efficiently finds a proper 2-coloring for all bipartite graphs. This includes graphs for which RLS and other EAs need exponential expected time in a static optimization scenario. We investigate different ways of building up the graph by popular graph traversals such as breadth-first-search and depth-first-search and analyse the resulting runtime behavior. We further show that offspring populations (e. g. a (1 + {$\\lambda$}) RLS) lead to an exponential speedup in {$\\lambda$}. Finally, an island model using 3 islands succeeds in an optimal time of {$\\Theta$}(m) on every m-edge bipartite graph, outperforming offspring populations. This is the first example where an island model guarantees a speedup that is not bounded in the number of islands.","lang":"eng"}],"extern":"1","user_id":"102979","type":"conference","year":"2020","citation":{"apa":"Bossek, J., Neumann, F., Peng, P., & Sudholt, D. (2020). More Effective Randomized Search Heuristics for Graph Coloring through Dynamic Optimization. Proceedings of the Genetic and Evolutionary Computation Conference, 1277–1285. https://doi.org/10.1145/3377930.3390174","ama":"Bossek J, Neumann F, Peng P, Sudholt D. More Effective Randomized Search Heuristics for Graph Coloring through Dynamic Optimization. In: Proceedings of the Genetic and Evolutionary Computation Conference. GECCO ’20. Association for Computing Machinery; 2020:1277–1285. doi:10.1145/3377930.3390174","chicago":"Bossek, Jakob, Frank Neumann, Pan Peng, and Dirk Sudholt. “More Effective Randomized Search Heuristics for Graph Coloring through Dynamic Optimization.” In Proceedings of the Genetic and Evolutionary Computation Conference, 1277–1285. GECCO ’20. New York, NY, USA: Association for Computing Machinery, 2020. https://doi.org/10.1145/3377930.3390174.","bibtex":"@inproceedings{Bossek_Neumann_Peng_Sudholt_2020, place={New York, NY, USA}, series={GECCO ’20}, title={More Effective Randomized Search Heuristics for Graph Coloring through Dynamic Optimization}, DOI={10.1145/3377930.3390174}, booktitle={Proceedings of the Genetic and Evolutionary Computation Conference}, publisher={Association for Computing Machinery}, author={Bossek, Jakob and Neumann, Frank and Peng, Pan and Sudholt, Dirk}, year={2020}, pages={1277–1285}, collection={GECCO ’20} }","mla":"Bossek, Jakob, et al. “More Effective Randomized Search Heuristics for Graph Coloring through Dynamic Optimization.” Proceedings of the Genetic and Evolutionary Computation Conference, Association for Computing Machinery, 2020, pp. 1277–1285, doi:10.1145/3377930.3390174.","short":"J. Bossek, F. Neumann, P. Peng, D. Sudholt, in: Proceedings of the Genetic and Evolutionary Computation Conference, Association for Computing Machinery, New York, NY, USA, 2020, pp. 1277–1285.","ieee":"J. Bossek, F. Neumann, P. Peng, and D. Sudholt, “More Effective Randomized Search Heuristics for Graph Coloring through Dynamic Optimization,” in Proceedings of the Genetic and Evolutionary Computation Conference, 2020, pp. 1277–1285, doi: 10.1145/3377930.3390174."},"page":"1277–1285","_id":"48847","department":[{"_id":"819"}],"publication_identifier":{"isbn":["978-1-4503-7128-5"]},"publication_status":"published","place":"New York, NY, USA","title":"More Effective Randomized Search Heuristics for Graph Coloring through Dynamic Optimization","series_title":"GECCO ’20","language":[{"iso":"eng"}],"date_updated":"2023-12-13T10:43:41Z","doi":"10.1145/3377930.3390174"},{"_id":"48849","page":"111–124","type":"conference","citation":{"ama":"Bossek J, Doerr C, Kerschke P, Neumann A, Neumann F. Evolving Sampling Strategies for One-Shot Optimization Tasks. In: Parallel Problem Solving from Nature (PPSN XVI). Springer-Verlag; 2020:111–124. doi:10.1007/978-3-030-58112-1_8","apa":"Bossek, J., Doerr, C., Kerschke, P., Neumann, A., & Neumann, F. (2020). Evolving Sampling Strategies for One-Shot Optimization Tasks. Parallel Problem Solving from Nature (PPSN XVI), 111–124. https://doi.org/10.1007/978-3-030-58112-1_8","chicago":"Bossek, Jakob, Carola Doerr, Pascal Kerschke, Aneta Neumann, and Frank Neumann. “Evolving Sampling Strategies for One-Shot Optimization Tasks.” In Parallel Problem Solving from Nature (PPSN XVI), 111–124. Berlin, Heidelberg: Springer-Verlag, 2020. https://doi.org/10.1007/978-3-030-58112-1_8.","mla":"Bossek, Jakob, et al. “Evolving Sampling Strategies for One-Shot Optimization Tasks.” Parallel Problem Solving from Nature (PPSN XVI), Springer-Verlag, 2020, pp. 111–124, doi:10.1007/978-3-030-58112-1_8.","bibtex":"@inproceedings{Bossek_Doerr_Kerschke_Neumann_Neumann_2020, place={Berlin, Heidelberg}, title={Evolving Sampling Strategies for One-Shot Optimization Tasks}, DOI={10.1007/978-3-030-58112-1_8}, booktitle={Parallel Problem Solving from Nature (PPSN XVI)}, publisher={Springer-Verlag}, author={Bossek, Jakob and Doerr, Carola and Kerschke, Pascal and Neumann, Aneta and Neumann, Frank}, year={2020}, pages={111–124} }","short":"J. Bossek, C. Doerr, P. Kerschke, A. Neumann, F. Neumann, in: Parallel Problem Solving from Nature (PPSN XVI), Springer-Verlag, Berlin, Heidelberg, 2020, pp. 111–124.","ieee":"J. Bossek, C. Doerr, P. Kerschke, A. Neumann, and F. Neumann, “Evolving Sampling Strategies for One-Shot Optimization Tasks,” in Parallel Problem Solving from Nature (PPSN XVI), 2020, pp. 111–124, doi: 10.1007/978-3-030-58112-1_8."},"year":"2020","abstract":[{"lang":"eng","text":"One-shot optimization tasks require to determine the set of solution candidates prior to their evaluation, i.e., without possibility for adaptive sampling. We consider two variants, classic one-shot optimization (where our aim is to find at least one solution of high quality) and one-shot regression (where the goal is to fit a model that resembles the true problem as well as possible). For both tasks it seems intuitive that well-distributed samples should perform better than uniform or grid-based samples, since they show a better coverage of the decision space. In practice, quasi-random designs such as Latin Hypercube Samples and low-discrepancy point sets are indeed very commonly used designs for one-shot optimization tasks. We study in this work how well low star discrepancy correlates with performance in one-shot optimization. Our results confirm an advantage of low-discrepancy designs, but also indicate the correlation between discrepancy values and overall performance is rather weak. We then demonstrate that commonly used designs may be far from optimal. More precisely, we evolve 24 very specific designs that each achieve good performance on one of our benchmark problems. Interestingly, we find that these specifically designed samples yield surprisingly good performance across the whole benchmark set. Our results therefore give strong indication that significant performance gains over state-of-the-art one-shot sampling techniques are possible, and that evolutionary algorithms can be an efficient means to evolve these."}],"extern":"1","user_id":"102979","publication":"Parallel Problem Solving from Nature (PPSN XVI)","keyword":["Continuous optimization","Fully parallel search","One-shot optimization","Regression","Surrogate-assisted optimization"],"publisher":"Springer-Verlag","author":[{"first_name":"Jakob","orcid":"0000-0002-4121-4668","full_name":"Bossek, Jakob","last_name":"Bossek","id":"102979"},{"last_name":"Doerr","first_name":"Carola","full_name":"Doerr, Carola"},{"first_name":"Pascal","full_name":"Kerschke, Pascal","last_name":"Kerschke"},{"first_name":"Aneta","full_name":"Neumann, Aneta","last_name":"Neumann"},{"full_name":"Neumann, Frank","first_name":"Frank","last_name":"Neumann"}],"date_created":"2023-11-14T15:58:53Z","status":"public","date_updated":"2023-12-13T10:43:53Z","doi":"10.1007/978-3-030-58112-1_8","language":[{"iso":"eng"}],"place":"Berlin, Heidelberg","title":"Evolving Sampling Strategies for One-Shot Optimization Tasks","department":[{"_id":"819"}],"publication_identifier":{"isbn":["978-3-030-58111-4"]},"publication_status":"published"},{"_id":"48851","citation":{"short":"J. Bossek, K. Casel, P. Kerschke, F. Neumann, in: Proceedings of the Genetic and Evolutionary Computation Conference, Association for Computing Machinery, New York, NY, USA, 2020, pp. 1286–1294.","ieee":"J. Bossek, K. Casel, P. Kerschke, and F. Neumann, “The Node Weight Dependent Traveling Salesperson Problem: Approximation Algorithms and Randomized Search Heuristics,” in Proceedings of the Genetic and Evolutionary Computation Conference, 2020, pp. 1286–1294, doi: 10.1145/3377930.3390243.","chicago":"Bossek, Jakob, Katrin Casel, Pascal Kerschke, and Frank Neumann. “The Node Weight Dependent Traveling Salesperson Problem: Approximation Algorithms and Randomized Search Heuristics.” In Proceedings of the Genetic and Evolutionary Computation Conference, 1286–1294. GECCO ’20. New York, NY, USA: Association for Computing Machinery, 2020. https://doi.org/10.1145/3377930.3390243.","apa":"Bossek, J., Casel, K., Kerschke, P., & Neumann, F. (2020). The Node Weight Dependent Traveling Salesperson Problem: Approximation Algorithms and Randomized Search Heuristics. Proceedings of the Genetic and Evolutionary Computation Conference, 1286–1294. https://doi.org/10.1145/3377930.3390243","ama":"Bossek J, Casel K, Kerschke P, Neumann F. The Node Weight Dependent Traveling Salesperson Problem: Approximation Algorithms and Randomized Search Heuristics. In: Proceedings of the Genetic and Evolutionary Computation Conference. GECCO ’20. Association for Computing Machinery; 2020:1286–1294. doi:10.1145/3377930.3390243","bibtex":"@inproceedings{Bossek_Casel_Kerschke_Neumann_2020, place={New York, NY, USA}, series={GECCO ’20}, title={The Node Weight Dependent Traveling Salesperson Problem: Approximation Algorithms and Randomized Search Heuristics}, DOI={10.1145/3377930.3390243}, booktitle={Proceedings of the Genetic and Evolutionary Computation Conference}, publisher={Association for Computing Machinery}, author={Bossek, Jakob and Casel, Katrin and Kerschke, Pascal and Neumann, Frank}, year={2020}, pages={1286–1294}, collection={GECCO ’20} }","mla":"Bossek, Jakob, et al. “The Node Weight Dependent Traveling Salesperson Problem: Approximation Algorithms and Randomized Search Heuristics.” Proceedings of the Genetic and Evolutionary Computation Conference, Association for Computing Machinery, 2020, pp. 1286–1294, doi:10.1145/3377930.3390243."},"year":"2020","type":"conference","page":"1286–1294","user_id":"102979","abstract":[{"lang":"eng","text":"Several important optimization problems in the area of vehicle routing can be seen as variants of the classical Traveling Salesperson Problem (TSP). In the area of evolutionary computation, the Traveling Thief Problem (TTP) has gained increasing interest over the last 5 years. In this paper, we investigate the effect of weights on such problems, in the sense that the cost of traveling increases with respect to the weights of nodes already visited during a tour. This provides abstractions of important TSP variants such as the Traveling Thief Problem and time dependent TSP variants, and allows to study precisely the increase in difficulty caused by weight dependence. We provide a 3.59-approximation for this weight dependent version of TSP with metric distances and bounded positive weights. Furthermore, we conduct experimental investigations for simple randomized local search with classical mutation operators and two variants of the state-of-the-art evolutionary algorithm EAX adapted to the weighted TSP. Our results show the impact of the node weights on the position of the nodes in the resulting tour."}],"extern":"1","status":"public","date_created":"2023-11-14T15:58:53Z","author":[{"last_name":"Bossek","id":"102979","first_name":"Jakob","full_name":"Bossek, Jakob","orcid":"0000-0002-4121-4668"},{"full_name":"Casel, Katrin","first_name":"Katrin","last_name":"Casel"},{"full_name":"Kerschke, Pascal","first_name":"Pascal","last_name":"Kerschke"},{"last_name":"Neumann","full_name":"Neumann, Frank","first_name":"Frank"}],"publisher":"Association for Computing Machinery","keyword":["dynamic optimization","evolutionary algorithms","running time analysis","theory"],"publication":"Proceedings of the Genetic and Evolutionary Computation Conference","doi":"10.1145/3377930.3390243","date_updated":"2023-12-13T10:43:33Z","language":[{"iso":"eng"}],"series_title":"GECCO ’20","title":"The Node Weight Dependent Traveling Salesperson Problem: Approximation Algorithms and Randomized Search Heuristics","place":"New York, NY, USA","publication_identifier":{"isbn":["978-1-4503-7128-5"]},"publication_status":"published","department":[{"_id":"819"}]},{"user_id":"102979","abstract":[{"text":"In practice, e.g. in delivery and service scenarios, Vehicle-Routing-Problems (VRPs) often imply repeated decision making on dynamic customer requests. As in classical VRPs, tours have to be planned short while the number of serviced customers has to be maximized at the same time resulting in a multi-objective problem. Beyond that, however, dynamic requests lead to the need for re-planning of not yet realized tour parts, while already realized tour parts are irreversible. In this paper we study this type of bi-objective dynamic VRP including sequential decision making and concurrent realization of decisions. We adopt a recently proposed Dynamic Evolutionary Multi-Objective Algorithm (DEMOA) for a related VRP problem and extend it to the more realistic (here considered) scenario of multiple vehicles. We empirically show that our DEMOA is competitive with a multi-vehicle offline and clairvoyant variant of the proposed DEMOA as well as with the dynamic single-vehicle approach proposed earlier.","lang":"eng"}],"extern":"1","date_created":"2023-11-14T15:58:52Z","status":"public","publication":"Proceedings of the Genetic and Evolutionary Computation Conference","keyword":["decision making","dynamic optimization","evolutionary algorithms","multi-objective optimization","vehicle routing"],"author":[{"id":"102979","last_name":"Bossek","full_name":"Bossek, Jakob","orcid":"0000-0002-4121-4668","first_name":"Jakob"},{"full_name":"Grimme, Christian","first_name":"Christian","last_name":"Grimme"},{"last_name":"Trautmann","first_name":"Heike","full_name":"Trautmann, Heike"}],"publisher":"Association for Computing Machinery","_id":"48845","page":"166–174","type":"conference","year":"2020","citation":{"chicago":"Bossek, Jakob, Christian Grimme, and Heike Trautmann. “Dynamic Bi-Objective Routing of Multiple Vehicles.” In Proceedings of the Genetic and Evolutionary Computation Conference, 166–174. GECCO ’20. New York, NY, USA: Association for Computing Machinery, 2020. https://doi.org/10.1145/3377930.3390146.","ama":"Bossek J, Grimme C, Trautmann H. Dynamic Bi-Objective Routing of Multiple Vehicles. In: Proceedings of the Genetic and Evolutionary Computation Conference. GECCO ’20. Association for Computing Machinery; 2020:166–174. doi:10.1145/3377930.3390146","apa":"Bossek, J., Grimme, C., & Trautmann, H. (2020). Dynamic Bi-Objective Routing of Multiple Vehicles. Proceedings of the Genetic and Evolutionary Computation Conference, 166–174. https://doi.org/10.1145/3377930.3390146","bibtex":"@inproceedings{Bossek_Grimme_Trautmann_2020, place={New York, NY, USA}, series={GECCO ’20}, title={Dynamic Bi-Objective Routing of Multiple Vehicles}, DOI={10.1145/3377930.3390146}, booktitle={Proceedings of the Genetic and Evolutionary Computation Conference}, publisher={Association for Computing Machinery}, author={Bossek, Jakob and Grimme, Christian and Trautmann, Heike}, year={2020}, pages={166–174}, collection={GECCO ’20} }","mla":"Bossek, Jakob, et al. “Dynamic Bi-Objective Routing of Multiple Vehicles.” Proceedings of the Genetic and Evolutionary Computation Conference, Association for Computing Machinery, 2020, pp. 166–174, doi:10.1145/3377930.3390146.","short":"J. Bossek, C. Grimme, H. Trautmann, in: Proceedings of the Genetic and Evolutionary Computation Conference, Association for Computing Machinery, New York, NY, USA, 2020, pp. 166–174.","ieee":"J. Bossek, C. Grimme, and H. Trautmann, “Dynamic Bi-Objective Routing of Multiple Vehicles,” in Proceedings of the Genetic and Evolutionary Computation Conference, 2020, pp. 166–174, doi: 10.1145/3377930.3390146."},"title":"Dynamic Bi-Objective Routing of Multiple Vehicles","place":"New York, NY, USA","publication_status":"published","publication_identifier":{"isbn":["978-1-4503-7128-5"]},"department":[{"_id":"819"}],"doi":"10.1145/3377930.3390146","date_updated":"2023-12-13T10:43:24Z","language":[{"iso":"eng"}],"series_title":"GECCO ’20"},{"title":"Initial Design Strategies and Their Effects on Sequential Model-Based Optimization: An Exploratory Case Study Based on BBOB","place":"New York, NY, USA","publication_identifier":{"isbn":["978-1-4503-7128-5"]},"publication_status":"published","department":[{"_id":"819"}],"doi":"10.1145/3377930.3390155","date_updated":"2023-12-13T10:44:01Z","language":[{"iso":"eng"}],"series_title":"GECCO ’20","user_id":"102979","abstract":[{"lang":"eng","text":"Sequential model-based optimization (SMBO) approaches are algorithms for solving problems that require computationally or otherwise expensive function evaluations. The key design principle of SMBO is a substitution of the true objective function by a surrogate, which is used to propose the point(s) to be evaluated next. SMBO algorithms are intrinsically modular, leaving the user with many important design choices. Significant research efforts go into understanding which settings perform best for which type of problems. Most works, however, focus on the choice of the model, the acquisition function, and the strategy used to optimize the latter. The choice of the initial sampling strategy, however, receives much less attention. Not surprisingly, quite diverging recommendations can be found in the literature. We analyze in this work how the size and the distribution of the initial sample influences the overall quality of the efficient global optimization (EGO) algorithm, a well-known SMBO approach. While, overall, small initial budgets using Halton sampling seem preferable, we also observe that the performance landscape is rather unstructured. We furthermore identify several situations in which EGO performs unfavorably against random sampling. Both observations indicate that an adaptive SMBO design could be beneficial, making SMBO an interesting test-bed for automated algorithm design."}],"extern":"1","date_created":"2023-11-14T15:58:53Z","status":"public","keyword":["continuous black-box optimization","design of experiments","initial design","sequential model-based optimization"],"publication":"Proceedings of the Genetic and Evolutionary Computation Conference","author":[{"last_name":"Bossek","id":"102979","first_name":"Jakob","orcid":"0000-0002-4121-4668","full_name":"Bossek, Jakob"},{"last_name":"Doerr","full_name":"Doerr, Carola","first_name":"Carola"},{"last_name":"Kerschke","full_name":"Kerschke, Pascal","first_name":"Pascal"}],"publisher":"Association for Computing Machinery","_id":"48850","page":"778–786","type":"conference","year":"2020","citation":{"short":"J. Bossek, C. Doerr, P. Kerschke, in: Proceedings of the Genetic and Evolutionary Computation Conference, Association for Computing Machinery, New York, NY, USA, 2020, pp. 778–786.","ieee":"J. Bossek, C. Doerr, and P. Kerschke, “Initial Design Strategies and Their Effects on Sequential Model-Based Optimization: An Exploratory Case Study Based on BBOB,” in Proceedings of the Genetic and Evolutionary Computation Conference, 2020, pp. 778–786, doi: 10.1145/3377930.3390155.","chicago":"Bossek, Jakob, Carola Doerr, and Pascal Kerschke. “Initial Design Strategies and Their Effects on Sequential Model-Based Optimization: An Exploratory Case Study Based on BBOB.” In Proceedings of the Genetic and Evolutionary Computation Conference, 778–786. GECCO ’20. New York, NY, USA: Association for Computing Machinery, 2020. https://doi.org/10.1145/3377930.3390155.","apa":"Bossek, J., Doerr, C., & Kerschke, P. (2020). Initial Design Strategies and Their Effects on Sequential Model-Based Optimization: An Exploratory Case Study Based on BBOB. Proceedings of the Genetic and Evolutionary Computation Conference, 778–786. https://doi.org/10.1145/3377930.3390155","ama":"Bossek J, Doerr C, Kerschke P. Initial Design Strategies and Their Effects on Sequential Model-Based Optimization: An Exploratory Case Study Based on BBOB. In: Proceedings of the Genetic and Evolutionary Computation Conference. GECCO ’20. Association for Computing Machinery; 2020:778–786. doi:10.1145/3377930.3390155","bibtex":"@inproceedings{Bossek_Doerr_Kerschke_2020, place={New York, NY, USA}, series={GECCO ’20}, title={Initial Design Strategies and Their Effects on Sequential Model-Based Optimization: An Exploratory Case Study Based on BBOB}, DOI={10.1145/3377930.3390155}, booktitle={Proceedings of the Genetic and Evolutionary Computation Conference}, publisher={Association for Computing Machinery}, author={Bossek, Jakob and Doerr, Carola and Kerschke, Pascal}, year={2020}, pages={778–786}, collection={GECCO ’20} }","mla":"Bossek, Jakob, et al. “Initial Design Strategies and Their Effects on Sequential Model-Based Optimization: An Exploratory Case Study Based on BBOB.” Proceedings of the Genetic and Evolutionary Computation Conference, Association for Computing Machinery, 2020, pp. 778–786, doi:10.1145/3377930.3390155."}},{"abstract":[{"text":"We build upon a recently proposed multi-objective view onto performance measurement of single-objective stochastic solvers. The trade-off between the fraction of failed runs and the mean runtime of successful runs \\textendash both to be minimized \\textendash is directly analyzed based on a study on algorithm selection of inexact state-of-the-art solvers for the famous Traveling Salesperson Problem (TSP). Moreover, we adopt the hypervolume indicator (HV) commonly used in multi-objective optimization for simultaneously assessing both conflicting objectives and investigate relations to commonly used performance indicators, both theoretically and empirically. Next to Penalized Average Runtime (PAR) and Penalized Quantile Runtime (PQR), the HV measure is used as a core concept within the construction of per-instance algorithm selection models offering interesting insights into complementary behavior of inexact TSP solvers. \\textbullet The multi-objective perspective is naturally generalizable to multiple objectives. \\textbullet Proof of relationship between HV and the PAR in the considered bi-objective space. \\textbullet New insights into complementary behavior of stochastic optimization algorithms.","lang":"eng"}],"user_id":"102979","title":"A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms","department":[{"_id":"819"}],"publication":"Applied Soft Computing","keyword":["Algorithm selection","Combinatorial optimization","Multi-objective optimization","Performance measurement","Traveling Salesperson Problem"],"author":[{"last_name":"Bossek","id":"102979","first_name":"Jakob","full_name":"Bossek, Jakob","orcid":"0000-0002-4121-4668"},{"full_name":"Kerschke, Pascal","first_name":"Pascal","last_name":"Kerschke"},{"full_name":"Trautmann, Heike","first_name":"Heike","last_name":"Trautmann"}],"date_created":"2023-11-14T15:58:53Z","status":"public","publication_identifier":{"issn":["1568-4946"]},"volume":88,"intvolume":" 88","_id":"48848","date_updated":"2023-12-13T10:52:17Z","issue":"C","doi":"10.1016/j.asoc.2019.105901","language":[{"iso":"eng"}],"year":"2020","citation":{"ieee":"J. Bossek, P. Kerschke, and H. Trautmann, “A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms,” Applied Soft Computing, vol. 88, no. C, 2020, doi: 10.1016/j.asoc.2019.105901.","short":"J. Bossek, P. Kerschke, H. Trautmann, Applied Soft Computing 88 (2020).","bibtex":"@article{Bossek_Kerschke_Trautmann_2020, title={A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms}, volume={88}, DOI={10.1016/j.asoc.2019.105901}, number={C}, journal={Applied Soft Computing}, author={Bossek, Jakob and Kerschke, Pascal and Trautmann, Heike}, year={2020} }","mla":"Bossek, Jakob, et al. “A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms.” Applied Soft Computing, vol. 88, no. C, 2020, doi:10.1016/j.asoc.2019.105901.","chicago":"Bossek, Jakob, Pascal Kerschke, and Heike Trautmann. “A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms.” Applied Soft Computing 88, no. C (2020). https://doi.org/10.1016/j.asoc.2019.105901.","apa":"Bossek, J., Kerschke, P., & Trautmann, H. (2020). A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms. Applied Soft Computing, 88(C). https://doi.org/10.1016/j.asoc.2019.105901","ama":"Bossek J, Kerschke P, Trautmann H. A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms. Applied Soft Computing. 2020;88(C). doi:10.1016/j.asoc.2019.105901"},"type":"journal_article"},{"user_id":"36049","article_type":"original","abstract":[{"text":"Employing main and sector-specific investment-grade CDS indices from the North American and European CDS market and performing mean-variance out-of-sample analyses for conservative and aggressive investors over the period from 2006 to 2014, this paper analyzes portfolio benefits of adding corporate CDS indices to a traditional financial portfolio consisting of stock and sovereign bond indices. As a baseline result, we initially find an increase in portfolio (downside) risk-diversification when adding CDS indices, which is observed irrespective of both CDS markets, investor-types and different sub-periods, including the global financial crisis and European sovereign debt crisis. In addition, the analysis reveals higher portfolio excess returns and performance in CDS index portfolios, however, these effects clearly differ between markets, investor-types and sub-periods. Overall, portfolio benefits of adding CDS indices mainly result from the fact that institutional investors replace sovereign bond indices rather than stock indices by CDS indices due to better risk-return characteristics. Our baseline findings remain robust under a variety of robustness checks. Results from sensitivity analyses provide further important implications for institutional investors with a strategic focus on a long-term conservative portfolio management.","lang":"eng"}],"jel":["C61","G01","G11","G15","G23"],"volume":22,"status":"public","date_created":"2018-10-01T12:17:35Z","author":[{"first_name":"Benjamin","full_name":"Hippert, Benjamin","last_name":"Hippert","id":"48476"},{"first_name":"André","full_name":"Uhde, André","orcid":"https://orcid.org/0000-0002-8058-8857","last_name":"Uhde","id":"36049"},{"first_name":"Sascha Tobias","orcid":"0000-0002-7820-3903","full_name":"Wengerek, Sascha Tobias","last_name":"Wengerek","id":"48837"}],"keyword":["Corporate credit default swap indices","Mean-variance asset allocation","Out-of-sample portfolio optimization","Portfolio risk-diversification","Portfolio performance evaluation"],"publication":"Review of Derivatives Research ","issue":"2","_id":"4562","intvolume":" 22","type":"journal_article","year":"2019","citation":{"mla":"Hippert, Benjamin, et al. “Portfolio Benefits of Adding Corporate Credit Default Swap Indices: Evidence from North America and Europe.” Review of Derivatives Research , vol. 22, no. 2, 2019, pp. 203–59, doi:https://doi.org/10.1007/s11147-018-9148-8.","bibtex":"@article{Hippert_Uhde_Wengerek_2019, title={Portfolio Benefits of Adding Corporate Credit Default Swap Indices: Evidence from North America and Europe}, volume={22}, DOI={https://doi.org/10.1007/s11147-018-9148-8}, number={2}, journal={Review of Derivatives Research }, author={Hippert, Benjamin and Uhde, André and Wengerek, Sascha Tobias}, year={2019}, pages={203–259} }","apa":"Hippert, B., Uhde, A., & Wengerek, S. T. (2019). Portfolio Benefits of Adding Corporate Credit Default Swap Indices: Evidence from North America and Europe. Review of Derivatives Research , 22(2), 203–259. https://doi.org/10.1007/s11147-018-9148-8","ama":"Hippert B, Uhde A, Wengerek ST. Portfolio Benefits of Adding Corporate Credit Default Swap Indices: Evidence from North America and Europe. Review of Derivatives Research . 2019;22(2):203-259. doi:https://doi.org/10.1007/s11147-018-9148-8","chicago":"Hippert, Benjamin, André Uhde, and Sascha Tobias Wengerek. “Portfolio Benefits of Adding Corporate Credit Default Swap Indices: Evidence from North America and Europe.” Review of Derivatives Research 22, no. 2 (2019): 203–59. https://doi.org/10.1007/s11147-018-9148-8.","ieee":"B. Hippert, A. Uhde, and S. T. Wengerek, “Portfolio Benefits of Adding Corporate Credit Default Swap Indices: Evidence from North America and Europe,” Review of Derivatives Research , vol. 22, no. 2, pp. 203–259, 2019, doi: https://doi.org/10.1007/s11147-018-9148-8.","short":"B. Hippert, A. Uhde, S.T. Wengerek, Review of Derivatives Research 22 (2019) 203–259."},"page":"203-259","title":"Portfolio Benefits of Adding Corporate Credit Default Swap Indices: Evidence from North America and Europe","publication_status":"published","department":[{"_id":"188"},{"_id":"186"}],"doi":"https://doi.org/10.1007/s11147-018-9148-8","date_updated":"2022-05-04T06:15:02Z","language":[{"iso":"eng"}]},{"abstract":[{"lang":"eng","text":"Ultraschall wird zur Effizienzsteigerung in verfahrenstechnischen Prozessen eingesetzt. Die Betriebsparamter der Ultraschallsysteme werden empirisch ermittelt, da derzeit keine systematische Analyse der Wechselwirkung zwischen Ultraschallwandler und Schallfeld sowie kein Verfahren zur Messung der Kavitationsaktivität ohne zusätzlichen Sensor existieren. Auf Basis einer experimentellen Analyse des betrachteten sonochemischen Reaktors wird ein Finite-Elemente-Modell aufgebaut, das die Wechselwirkung zwischen Schallfeld und Ultraschallwandler berücksichtigt. Die modellbasierte Analyse zeigt, dass wegen der akustischen Eigenschaften des Autoklavs nur direkt an der Sonotrode Kavitation entsteht. Die Wechselwirkung zwischen Ultraschallwandler und Schallfeld ermöglicht Aussagen über das Schallfeld und die Kavitationsaktivität auf Basis der Rückwirkung auf den Ultraschallwandler. Die lineare Schalldruckverteilung ermöglicht eine Prognose über die Verteilung von Kavitationszonen. Das beschriebene Modell liefert wertvolle Erkenntnisse für die Auslegung, Analyse und Skalierung sonochemischer Reaktoren. Auf Grund der rauen Prozessrandbedingungen ist die Applikation von Sensoren zur Überwachung der Kavitationsaktivität in vielen sonochemischen Prozessen nicht möglich. Zur prozessbegleitenden Messung der Kavitationsaktivität wird ein Verfahren entwickelt, das die Bewertung der Kavitationsaktivität durch Auswertung der Rückwirkung auf den Ultraschallwandler erlaubt. Das Messverfahren ermöglicht eine vorhersagbare und reproduzierbare Durchführung kavitationsbasierter Prozesse und stellt eine wichtige Erweiterung für bestehende und neue Ultraschallsysteme dar."}],"user_id":"210","title":"Modellierung und experimentelle Charakterisierung der Wechselwirkung zwischen Ultraschallwandler und Flüssigkeit in kavitationsbasierten Prozessen","publisher":"Shaker","author":[{"last_name":"Bornmann","full_name":"Bornmann, Peter","first_name":"Peter"}],"department":[{"_id":"151"}],"keyword":["Sonochemie","Akustische Kavitation","Kavitationsmessung","Kavitationsdetektion","FEM-Simulation Ultraschallwandler","Prozessüberwachung","FEM-Simulation Schallfeld","Self-Sensing","Piezoelektrische Ultraschallwandler","Ultraschallreinigung"],"status":"public","date_created":"2019-05-27T10:29:53Z","date_updated":"2023-09-15T12:23:55Z","_id":"10000","language":[{"iso":"eng"}],"citation":{"ieee":"P. Bornmann, Modellierung und experimentelle Charakterisierung der Wechselwirkung zwischen Ultraschallwandler und Flüssigkeit in kavitationsbasierten Prozessen. Shaker, 2019.","short":"P. Bornmann, Modellierung Und Experimentelle Charakterisierung Der Wechselwirkung Zwischen Ultraschallwandler Und Flüssigkeit in Kavitationsbasierten Prozessen, Shaker, 2019.","mla":"Bornmann, Peter. Modellierung Und Experimentelle Charakterisierung Der Wechselwirkung Zwischen Ultraschallwandler Und Flüssigkeit in Kavitationsbasierten Prozessen. Shaker, 2019.","bibtex":"@book{Bornmann_2019, title={Modellierung und experimentelle Charakterisierung der Wechselwirkung zwischen Ultraschallwandler und Flüssigkeit in kavitationsbasierten Prozessen}, publisher={Shaker}, author={Bornmann, Peter}, year={2019} }","apa":"Bornmann, P. (2019). Modellierung und experimentelle Charakterisierung der Wechselwirkung zwischen Ultraschallwandler und Flüssigkeit in kavitationsbasierten Prozessen. Shaker.","ama":"Bornmann P. Modellierung Und Experimentelle Charakterisierung Der Wechselwirkung Zwischen Ultraschallwandler Und Flüssigkeit in Kavitationsbasierten Prozessen. Shaker; 2019.","chicago":"Bornmann, Peter. Modellierung Und Experimentelle Charakterisierung Der Wechselwirkung Zwischen Ultraschallwandler Und Flüssigkeit in Kavitationsbasierten Prozessen. Shaker, 2019."},"year":"2019","type":"dissertation"},{"extern":"1","abstract":[{"text":"We tackle a bi-objective dynamic orienteering problem where customer requests arise as time passes by. The goal is to minimize the tour length traveled by a single delivery vehicle while simultaneously keeping the number of dismissed dynamic customers to a minimum. We propose a dynamic Evolutionary Multi-Objective Algorithm which is grounded on insights gained from a previous series of work on an a-posteriori version of the problem, where all request times are known in advance. In our experiments, we simulate different decision maker strategies and evaluate the development of the Pareto-front approximations on exemplary problem instances. It turns out, that despite severely reduced computational budget and no oracle-knowledge of request times the dynamic EMOA is capable of producing approximations which partially dominate the results of the a-posteriori EMOA and dynamic integer linear programming strategies.","lang":"eng"}],"user_id":"102979","publication":"Evolutionary Multi-Criterion Optimization (EMO)","keyword":["Combinatorial optimization","Dynamic optimization","Metaheuristics","Multi-objective optimization","Vehicle routing"],"publisher":"Springer International Publishing","author":[{"full_name":"Bossek, Jakob","orcid":"0000-0002-4121-4668","first_name":"Jakob","id":"102979","last_name":"Bossek"},{"last_name":"Grimme","first_name":"Christian","full_name":"Grimme, Christian"},{"last_name":"Meisel","full_name":"Meisel, Stephan","first_name":"Stephan"},{"full_name":"Rudolph, Günter","first_name":"Günter","last_name":"Rudolph"},{"last_name":"Trautmann","first_name":"Heike","full_name":"Trautmann, Heike"}],"date_created":"2023-11-14T15:58:52Z","status":"public","_id":"48841","page":"516–528","year":"2019","type":"conference","citation":{"ama":"Bossek J, Grimme C, Meisel S, Rudolph G, Trautmann H. Bi-Objective Orienteering: Towards a Dynamic Multi-objective Evolutionary Algorithm. In: Deb K, Goodman E, Coello Coello CA, et al., eds. Evolutionary Multi-Criterion Optimization (EMO). Lecture Notes in Computer Science. Springer International Publishing; 2019:516–528. doi:10.1007/978-3-030-12598-1_41","apa":"Bossek, J., Grimme, C., Meisel, S., Rudolph, G., & Trautmann, H. (2019). Bi-Objective Orienteering: Towards a Dynamic Multi-objective Evolutionary Algorithm. In K. Deb, E. Goodman, C. A. Coello Coello, K. Klamroth, K. Miettinen, S. Mostaghim, & P. Reed (Eds.), Evolutionary Multi-Criterion Optimization (EMO) (pp. 516–528). Springer International Publishing. https://doi.org/10.1007/978-3-030-12598-1_41","chicago":"Bossek, Jakob, Christian Grimme, Stephan Meisel, Günter Rudolph, and Heike Trautmann. “Bi-Objective Orienteering: Towards a Dynamic Multi-Objective Evolutionary Algorithm.” In Evolutionary Multi-Criterion Optimization (EMO), edited by Kalyanmoy Deb, Erik Goodman, Carlos A. Coello Coello, Kathrin Klamroth, Kaisa Miettinen, Sanaz Mostaghim, and Patrick Reed, 516–528. Lecture Notes in Computer Science. Cham: Springer International Publishing, 2019. https://doi.org/10.1007/978-3-030-12598-1_41.","mla":"Bossek, Jakob, et al. “Bi-Objective Orienteering: Towards a Dynamic Multi-Objective Evolutionary Algorithm.” Evolutionary Multi-Criterion Optimization (EMO), edited by Kalyanmoy Deb et al., Springer International Publishing, 2019, pp. 516–528, doi:10.1007/978-3-030-12598-1_41.","bibtex":"@inproceedings{Bossek_Grimme_Meisel_Rudolph_Trautmann_2019, place={Cham}, series={Lecture Notes in Computer Science}, title={Bi-Objective Orienteering: Towards a Dynamic Multi-objective Evolutionary Algorithm}, DOI={10.1007/978-3-030-12598-1_41}, booktitle={Evolutionary Multi-Criterion Optimization (EMO)}, publisher={Springer International Publishing}, author={Bossek, Jakob and Grimme, Christian and Meisel, Stephan and Rudolph, Günter and Trautmann, Heike}, editor={Deb, Kalyanmoy and Goodman, Erik and Coello Coello, Carlos A. and Klamroth, Kathrin and Miettinen, Kaisa and Mostaghim, Sanaz and Reed, Patrick}, year={2019}, pages={516–528}, collection={Lecture Notes in Computer Science} }","short":"J. Bossek, C. Grimme, S. Meisel, G. Rudolph, H. Trautmann, in: K. Deb, E. Goodman, C.A. Coello Coello, K. Klamroth, K. Miettinen, S. Mostaghim, P. Reed (Eds.), Evolutionary Multi-Criterion Optimization (EMO), Springer International Publishing, Cham, 2019, pp. 516–528.","ieee":"J. Bossek, C. Grimme, S. Meisel, G. Rudolph, and H. Trautmann, “Bi-Objective Orienteering: Towards a Dynamic Multi-objective Evolutionary Algorithm,” in Evolutionary Multi-Criterion Optimization (EMO), 2019, pp. 516–528, doi: 10.1007/978-3-030-12598-1_41."},"place":"Cham","title":"Bi-Objective Orienteering: Towards a Dynamic Multi-objective Evolutionary Algorithm","department":[{"_id":"819"}],"publication_status":"published","publication_identifier":{"isbn":["978-3-030-12598-1"]},"editor":[{"full_name":"Deb, Kalyanmoy","first_name":"Kalyanmoy","last_name":"Deb"},{"last_name":"Goodman","full_name":"Goodman, Erik","first_name":"Erik"},{"first_name":"Carlos A.","full_name":"Coello Coello, Carlos A.","last_name":"Coello Coello"},{"last_name":"Klamroth","first_name":"Kathrin","full_name":"Klamroth, Kathrin"},{"first_name":"Kaisa","full_name":"Miettinen, Kaisa","last_name":"Miettinen"},{"first_name":"Sanaz","full_name":"Mostaghim, Sanaz","last_name":"Mostaghim"},{"full_name":"Reed, Patrick","first_name":"Patrick","last_name":"Reed"}],"date_updated":"2023-12-13T10:43:07Z","doi":"10.1007/978-3-030-12598-1_41","series_title":"Lecture Notes in Computer Science","language":[{"iso":"eng"}]},{"keyword":["benchmarking","instance features","optimization","problem generation","traveling salesperson problem"],"publication":"Proceedings of the 15th ACM/SIGEVO Conference on Foundations of Genetic Algorithms","author":[{"first_name":"Jakob","orcid":"0000-0002-4121-4668","full_name":"Bossek, Jakob","last_name":"Bossek","id":"102979"},{"full_name":"Kerschke, Pascal","first_name":"Pascal","last_name":"Kerschke"},{"last_name":"Neumann","full_name":"Neumann, Aneta","first_name":"Aneta"},{"last_name":"Wagner","full_name":"Wagner, Markus","first_name":"Markus"},{"last_name":"Neumann","full_name":"Neumann, Frank","first_name":"Frank"},{"first_name":"Heike","full_name":"Trautmann, Heike","last_name":"Trautmann"}],"publisher":"Association for Computing Machinery","date_created":"2023-11-14T15:58:52Z","status":"public","abstract":[{"lang":"eng","text":"Evolutionary algorithms have successfully been applied to evolve problem instances that exhibit a significant difference in performance for a given algorithm or a pair of algorithms inter alia for the Traveling Salesperson Problem (TSP). Creating a large variety of instances is crucial for successful applications in the blooming field of algorithm selection. In this paper, we introduce new and creative mutation operators for evolving instances of the TSP. We show that adopting those operators in an evolutionary algorithm allows for the generation of benchmark sets with highly desirable properties: (1) novelty by clear visual distinction to established benchmark sets in the field, (2) visual and quantitative diversity in the space of TSP problem characteristics, and (3) significant performance differences with respect to the restart versions of heuristic state-of-the-art TSP solvers EAX and LKH. The important aspect of diversity is addressed and achieved solely by the proposed mutation operators and not enforced by explicit diversity preservation."}],"extern":"1","user_id":"102979","page":"58–71","type":"conference","citation":{"bibtex":"@inproceedings{Bossek_Kerschke_Neumann_Wagner_Neumann_Trautmann_2019, place={New York, NY, USA}, series={FOGA ’19}, title={Evolving Diverse TSP Instances by Means of Novel and Creative Mutation Operators}, DOI={10.1145/3299904.3340307}, booktitle={Proceedings of the 15th ACM/SIGEVO Conference on Foundations of Genetic Algorithms}, publisher={Association for Computing Machinery}, author={Bossek, Jakob and Kerschke, Pascal and Neumann, Aneta and Wagner, Markus and Neumann, Frank and Trautmann, Heike}, year={2019}, pages={58–71}, collection={FOGA ’19} }","mla":"Bossek, Jakob, et al. “Evolving Diverse TSP Instances by Means of Novel and Creative Mutation Operators.” Proceedings of the 15th ACM/SIGEVO Conference on Foundations of Genetic Algorithms, Association for Computing Machinery, 2019, pp. 58–71, doi:10.1145/3299904.3340307.","ama":"Bossek J, Kerschke P, Neumann A, Wagner M, Neumann F, Trautmann H. Evolving Diverse TSP Instances by Means of Novel and Creative Mutation Operators. In: Proceedings of the 15th ACM/SIGEVO Conference on Foundations of Genetic Algorithms. FOGA ’19. Association for Computing Machinery; 2019:58–71. doi:10.1145/3299904.3340307","apa":"Bossek, J., Kerschke, P., Neumann, A., Wagner, M., Neumann, F., & Trautmann, H. (2019). Evolving Diverse TSP Instances by Means of Novel and Creative Mutation Operators. Proceedings of the 15th ACM/SIGEVO Conference on Foundations of Genetic Algorithms, 58–71. https://doi.org/10.1145/3299904.3340307","chicago":"Bossek, Jakob, Pascal Kerschke, Aneta Neumann, Markus Wagner, Frank Neumann, and Heike Trautmann. “Evolving Diverse TSP Instances by Means of Novel and Creative Mutation Operators.” In Proceedings of the 15th ACM/SIGEVO Conference on Foundations of Genetic Algorithms, 58–71. FOGA ’19. New York, NY, USA: Association for Computing Machinery, 2019. https://doi.org/10.1145/3299904.3340307.","ieee":"J. Bossek, P. Kerschke, A. Neumann, M. Wagner, F. Neumann, and H. Trautmann, “Evolving Diverse TSP Instances by Means of Novel and Creative Mutation Operators,” in Proceedings of the 15th ACM/SIGEVO Conference on Foundations of Genetic Algorithms, 2019, pp. 58–71, doi: 10.1145/3299904.3340307.","short":"J. Bossek, P. Kerschke, A. Neumann, M. Wagner, F. Neumann, H. Trautmann, in: Proceedings of the 15th ACM/SIGEVO Conference on Foundations of Genetic Algorithms, Association for Computing Machinery, New York, NY, USA, 2019, pp. 58–71."},"year":"2019","_id":"48842","department":[{"_id":"819"}],"publication_status":"published","publication_identifier":{"isbn":["978-1-4503-6254-2"]},"place":"New York, NY, USA","title":"Evolving Diverse TSP Instances by Means of Novel and Creative Mutation Operators","series_title":"FOGA ’19","language":[{"iso":"eng"}],"date_updated":"2023-12-13T10:42:57Z","doi":"10.1145/3299904.3340307"},{"date_updated":"2023-12-13T10:42:37Z","doi":"10.1145/3321707.3321792","series_title":"GECCO ’19","language":[{"iso":"eng"}],"place":"New York, NY, USA","title":"Runtime Analysis of Randomized Search Heuristics for Dynamic Graph Coloring","department":[{"_id":"819"}],"publication_identifier":{"isbn":["978-1-4503-6111-8"]},"publication_status":"published","_id":"48843","type":"conference","year":"2019","citation":{"ieee":"J. Bossek, F. Neumann, P. Peng, and D. Sudholt, “Runtime Analysis of Randomized Search Heuristics for Dynamic Graph Coloring,” in Proceedings of the Genetic and Evolutionary Computation Conference, 2019, pp. 1443–1451, doi: 10.1145/3321707.3321792.","short":"J. Bossek, F. Neumann, P. Peng, D. Sudholt, in: Proceedings of the Genetic and Evolutionary Computation Conference, Association for Computing Machinery, New York, NY, USA, 2019, pp. 1443–1451.","mla":"Bossek, Jakob, et al. “Runtime Analysis of Randomized Search Heuristics for Dynamic Graph Coloring.” Proceedings of the Genetic and Evolutionary Computation Conference, Association for Computing Machinery, 2019, pp. 1443–1451, doi:10.1145/3321707.3321792.","bibtex":"@inproceedings{Bossek_Neumann_Peng_Sudholt_2019, place={New York, NY, USA}, series={GECCO ’19}, title={Runtime Analysis of Randomized Search Heuristics for Dynamic Graph Coloring}, DOI={10.1145/3321707.3321792}, booktitle={Proceedings of the Genetic and Evolutionary Computation Conference}, publisher={Association for Computing Machinery}, author={Bossek, Jakob and Neumann, Frank and Peng, Pan and Sudholt, Dirk}, year={2019}, pages={1443–1451}, collection={GECCO ’19} }","chicago":"Bossek, Jakob, Frank Neumann, Pan Peng, and Dirk Sudholt. “Runtime Analysis of Randomized Search Heuristics for Dynamic Graph Coloring.” In Proceedings of the Genetic and Evolutionary Computation Conference, 1443–1451. GECCO ’19. New York, NY, USA: Association for Computing Machinery, 2019. https://doi.org/10.1145/3321707.3321792.","ama":"Bossek J, Neumann F, Peng P, Sudholt D. Runtime Analysis of Randomized Search Heuristics for Dynamic Graph Coloring. In: Proceedings of the Genetic and Evolutionary Computation Conference. GECCO ’19. Association for Computing Machinery; 2019:1443–1451. doi:10.1145/3321707.3321792","apa":"Bossek, J., Neumann, F., Peng, P., & Sudholt, D. (2019). Runtime Analysis of Randomized Search Heuristics for Dynamic Graph Coloring. Proceedings of the Genetic and Evolutionary Computation Conference, 1443–1451. https://doi.org/10.1145/3321707.3321792"},"page":"1443–1451","abstract":[{"text":"We contribute to the theoretical understanding of randomized search heuristics for dynamic problems. We consider the classical graph coloring problem and investigate the dynamic setting where edges are added to the current graph. We then analyze the expected time for randomized search heuristics to recompute high quality solutions. This includes the (1+1) EA and RLS in a setting where the number of colors is bounded and we are minimizing the number of conflicts as well as iterated local search algorithms that use an unbounded color palette and aim to use the smallest colors and - as a consequence - the smallest number of colors. We identify classes of bipartite graphs where reoptimization is as hard as or even harder than optimization from scratch, i. e. starting with a random initialization. Even adding a single edge can lead to hard symmetry problems. However, graph classes that are hard for one algorithm turn out to be easy for others. In most cases our bounds show that reoptimization is faster than optimizing from scratch. Furthermore, we show how to speed up computations by using problem specific operators concentrating on parts of the graph where changes have occurred.","lang":"eng"}],"extern":"1","user_id":"102979","publisher":"Association for Computing Machinery","author":[{"last_name":"Bossek","id":"102979","first_name":"Jakob","orcid":"0000-0002-4121-4668","full_name":"Bossek, Jakob"},{"full_name":"Neumann, Frank","first_name":"Frank","last_name":"Neumann"},{"first_name":"Pan","full_name":"Peng, Pan","last_name":"Peng"},{"full_name":"Sudholt, Dirk","first_name":"Dirk","last_name":"Sudholt"}],"publication":"Proceedings of the Genetic and Evolutionary Computation Conference","keyword":["dynamic optimization","evolutionary algorithms","running time analysis","theory"],"status":"public","date_created":"2023-11-14T15:58:52Z"},{"series_title":"GECCO ’19","language":[{"iso":"eng"}],"date_updated":"2023-12-13T10:42:24Z","doi":"10.1145/3321707.3321818","department":[{"_id":"819"}],"publication_identifier":{"isbn":["978-1-4503-6111-8"]},"publication_status":"published","place":"New York, NY, USA","title":"On the Benefits of Biased Edge-Exchange Mutation for the Multi-Criteria Spanning Tree Problem","page":"516–523","type":"conference","citation":{"short":"J. Bossek, C. Grimme, F. Neumann, in: Proceedings of the Genetic and Evolutionary Computation Conference, Association for Computing Machinery, New York, NY, USA, 2019, pp. 516–523.","ieee":"J. Bossek, C. Grimme, and F. Neumann, “On the Benefits of Biased Edge-Exchange Mutation for the Multi-Criteria Spanning Tree Problem,” in Proceedings of the Genetic and Evolutionary Computation Conference, 2019, pp. 516–523, doi: 10.1145/3321707.3321818.","apa":"Bossek, J., Grimme, C., & Neumann, F. (2019). On the Benefits of Biased Edge-Exchange Mutation for the Multi-Criteria Spanning Tree Problem. Proceedings of the Genetic and Evolutionary Computation Conference, 516–523. https://doi.org/10.1145/3321707.3321818","ama":"Bossek J, Grimme C, Neumann F. On the Benefits of Biased Edge-Exchange Mutation for the Multi-Criteria Spanning Tree Problem. In: Proceedings of the Genetic and Evolutionary Computation Conference. GECCO ’19. Association for Computing Machinery; 2019:516–523. doi:10.1145/3321707.3321818","chicago":"Bossek, Jakob, Christian Grimme, and Frank Neumann. “On the Benefits of Biased Edge-Exchange Mutation for the Multi-Criteria Spanning Tree Problem.” In Proceedings of the Genetic and Evolutionary Computation Conference, 516–523. GECCO ’19. New York, NY, USA: Association for Computing Machinery, 2019. https://doi.org/10.1145/3321707.3321818.","bibtex":"@inproceedings{Bossek_Grimme_Neumann_2019, place={New York, NY, USA}, series={GECCO ’19}, title={On the Benefits of Biased Edge-Exchange Mutation for the Multi-Criteria Spanning Tree Problem}, DOI={10.1145/3321707.3321818}, booktitle={Proceedings of the Genetic and Evolutionary Computation Conference}, publisher={Association for Computing Machinery}, author={Bossek, Jakob and Grimme, Christian and Neumann, Frank}, year={2019}, pages={516–523}, collection={GECCO ’19} }","mla":"Bossek, Jakob, et al. “On the Benefits of Biased Edge-Exchange Mutation for the Multi-Criteria Spanning Tree Problem.” Proceedings of the Genetic and Evolutionary Computation Conference, Association for Computing Machinery, 2019, pp. 516–523, doi:10.1145/3321707.3321818."},"year":"2019","_id":"48840","publication":"Proceedings of the Genetic and Evolutionary Computation Conference","keyword":["biased mutation","combinatorial optimization","minimum spanning tree","multi-objective optimization"],"publisher":"Association for Computing Machinery","author":[{"last_name":"Bossek","id":"102979","first_name":"Jakob","orcid":"0000-0002-4121-4668","full_name":"Bossek, Jakob"},{"first_name":"Christian","full_name":"Grimme, Christian","last_name":"Grimme"},{"first_name":"Frank","full_name":"Neumann, Frank","last_name":"Neumann"}],"date_created":"2023-11-14T15:58:52Z","status":"public","abstract":[{"text":"Research has shown that for many single-objective graph problems where optimum solutions are composed of low weight sub-graphs, such as the minimum spanning tree problem (MST), mutation operators favoring low weight edges show superior performance. Intuitively, similar observations should hold for multi-criteria variants of such problems. In this work, we focus on the multi-criteria MST problem. A thorough experimental study is conducted where we estimate the probability of edges being part of non-dominated spanning trees as a function of the edges’ non-domination level or domination count, respectively. Building on gained insights, we propose several biased one-edge-exchange mutation operators that differ in the used edge-selection probability distribution (biased towards edges of low rank). Our empirical analysis shows that among different graph types (dense and sparse) and edge weight types (both uniformly random and combinations of Euclidean and uniformly random) biased edge-selection strategies perform superior in contrast to the baseline uniform edge-selection. Our findings are in particular strong for dense graphs.","lang":"eng"}],"extern":"1","user_id":"102979"},{"language":[{"iso":"eng"}],"doi":"10.1109/IPDPS.2018.00114","date_updated":"2022-01-06T06:51:05Z","project":[{"name":"SFB 901","_id":"1"},{"name":"SFB 901 - Project Area A","_id":"2"},{"_id":"5","name":"SFB 901 - Subproject A1"}],"department":[{"_id":"79"},{"_id":"66"}],"title":"Self-Stabilizing Supervised Publish-Subscribe Systems","external_id":{"arxiv":["1710.08128"]},"citation":{"chicago":"Feldmann, Michael, Christina Kolb, Christian Scheideler, and Thim Frederik Strothmann. “Self-Stabilizing Supervised Publish-Subscribe Systems.” In Proceedings of the 32nd IEEE International Parallel & Distributed Processing Symposium (IPDPS). IEEE, 2018. https://doi.org/10.1109/IPDPS.2018.00114.","ama":"Feldmann M, Kolb C, Scheideler C, Strothmann TF. Self-Stabilizing Supervised Publish-Subscribe Systems. In: Proceedings of the 32nd IEEE International Parallel & Distributed Processing Symposium (IPDPS). IEEE; 2018. doi:10.1109/IPDPS.2018.00114","apa":"Feldmann, M., Kolb, C., Scheideler, C., & Strothmann, T. F. (2018). Self-Stabilizing Supervised Publish-Subscribe Systems. In Proceedings of the 32nd IEEE International Parallel & Distributed Processing Symposium (IPDPS). Vancouver: IEEE. https://doi.org/10.1109/IPDPS.2018.00114","mla":"Feldmann, Michael, et al. “Self-Stabilizing Supervised Publish-Subscribe Systems.” Proceedings of the 32nd IEEE International Parallel & Distributed Processing Symposium (IPDPS), IEEE, 2018, doi:10.1109/IPDPS.2018.00114.","bibtex":"@inproceedings{Feldmann_Kolb_Scheideler_Strothmann_2018, title={Self-Stabilizing Supervised Publish-Subscribe Systems}, DOI={10.1109/IPDPS.2018.00114}, booktitle={Proceedings of the 32nd IEEE International Parallel & Distributed Processing Symposium (IPDPS)}, publisher={IEEE}, author={Feldmann, Michael and Kolb, Christina and Scheideler, Christian and Strothmann, Thim Frederik}, year={2018} }","short":"M. Feldmann, C. Kolb, C. Scheideler, T.F. Strothmann, in: Proceedings of the 32nd IEEE International Parallel & Distributed Processing Symposium (IPDPS), IEEE, 2018.","ieee":"M. Feldmann, C. Kolb, C. Scheideler, and T. F. Strothmann, “Self-Stabilizing Supervised Publish-Subscribe Systems,” in Proceedings of the 32nd IEEE International Parallel & Distributed Processing Symposium (IPDPS), Vancouver, 2018."},"type":"conference","year":"2018","_id":"1163","conference":{"location":"Vancouver","start_date":"2018-5-22","name":"32nd IEEE International Parallel & Distributed Processing Symposium (IPDPS)","end_date":"2018-5-24"},"status":"public","has_accepted_license":"1","date_created":"2018-02-01T13:56:01Z","author":[{"last_name":"Feldmann","id":"23538","first_name":"Michael","full_name":"Feldmann, Michael"},{"last_name":"Kolb","id":"43647","first_name":"Christina","full_name":"Kolb, Christina"},{"id":"20792","last_name":"Scheideler","full_name":"Scheideler, Christian","first_name":"Christian"},{"first_name":"Thim Frederik","full_name":"Strothmann, Thim Frederik","last_name":"Strothmann","id":"11319"}],"publisher":"IEEE","file_date_updated":"2018-10-31T13:25:37Z","publication":"Proceedings of the 32nd IEEE International Parallel & Distributed Processing Symposium (IPDPS)","keyword":["Topological Self-stabilization","Supervised Overlay","Publish-Subscribe System"],"file":[{"access_level":"closed","date_created":"2018-10-31T13:25:37Z","file_name":"08425258.pdf","content_type":"application/pdf","date_updated":"2018-10-31T13:25:37Z","success":1,"relation":"main_file","file_size":239559,"file_id":"5211","creator":"mfeldma2"}],"ddc":["040"],"user_id":"11319","abstract":[{"text":"In this paper we present two major results:\r\nFirst, we introduce the first self-stabilizing version of a supervised overlay network (as introduced in~\\cite{DBLP:conf/ispan/KothapalliS05}) by presenting a self-stabilizing supervised skip ring.\r\nSecondly, we show how to use the self-stabilizing supervised skip ring to construct an efficient self-stabilizing publish-subscribe system.\r\nThat is, in addition to stabilizing the overlay network, every subscriber of a topic will eventually know all of the publications that have been issued so far for that topic. The communication work needed to processes a subscribe or unsubscribe operation is just a constant in a legitimate state, and the communication work of checking whether the system is still in a legitimate state is just a constant on expectation for the supervisor as well as any process in the system.\r\n","lang":"eng"}]},{"oa":"1","date_updated":"2022-01-06T07:02:28Z","language":[{"iso":"eng"}],"title":"Decision Support for the Optimal Coordination of Spontaneous Volunteers in Disaster Relief","department":[{"_id":"277"}],"conference":{"location":"Rochester, NY, USA","name":"15th International Conference on Information Systems for Crisis Response and Management"},"_id":"5675","year":"2018","citation":{"chicago":"Rauchecker, Gerhard, and Guido Schryen. “Decision Support for the Optimal Coordination of Spontaneous Volunteers in Disaster Relief.” In Proceedings of the 15th International Conference on Information Systems for Crisis Response and Management, 2018.","apa":"Rauchecker, G., & Schryen, G. (2018). Decision Support for the Optimal Coordination of Spontaneous Volunteers in Disaster Relief. In Proceedings of the 15th International Conference on Information Systems for Crisis Response and Management. Rochester, NY, USA.","ama":"Rauchecker G, Schryen G. Decision Support for the Optimal Coordination of Spontaneous Volunteers in Disaster Relief. In: Proceedings of the 15th International Conference on Information Systems for Crisis Response and Management. ; 2018.","bibtex":"@inproceedings{Rauchecker_Schryen_2018, title={Decision Support for the Optimal Coordination of Spontaneous Volunteers in Disaster Relief}, booktitle={Proceedings of the 15th International Conference on Information Systems for Crisis Response and Management}, author={Rauchecker, Gerhard and Schryen, Guido}, year={2018} }","mla":"Rauchecker, Gerhard, and Guido Schryen. “Decision Support for the Optimal Coordination of Spontaneous Volunteers in Disaster Relief.” Proceedings of the 15th International Conference on Information Systems for Crisis Response and Management, 2018.","short":"G. Rauchecker, G. Schryen, in: Proceedings of the 15th International Conference on Information Systems for Crisis Response and Management, 2018.","ieee":"G. Rauchecker and G. Schryen, “Decision Support for the Optimal Coordination of Spontaneous Volunteers in Disaster Relief,” in Proceedings of the 15th International Conference on Information Systems for Crisis Response and Management, Rochester, NY, USA, 2018."},"type":"conference","ddc":["000"],"user_id":"61579","extern":"1","abstract":[{"lang":"eng","text":"When responding to natural disasters, professional relief units are often supported by many volunteers which are not affiliated to humanitarian organizations. The effective coordination of these volunteers is crucial to leverage their capabilities and to avoid conflicts with professional relief units. In this paper, we empirically identify key requirements that professional relief units pose on this coordination. Based on these requirements, we suggest a decision model. We computationally solve a real-world instance of the model and empirically validate the computed solution in interviews with practitioners. Our results show that the suggested model allows for solving volunteer coordination tasks of realistic size near-optimally within short time, with the determined solution being well accepted by practitioners. We also describe in this article how the suggested decision support model is integrated in the volunteer coordination system which we develop in joint cooperation with a disaster management authority and a software development company."}],"date_created":"2018-11-14T15:35:54Z","status":"public","has_accepted_license":"1","file_date_updated":"2018-12-13T15:05:44Z","keyword":["Coordination of spontaneous volunteers","volunteer coordination system","decision support","scheduling optimization model","linear programming"],"publication":"Proceedings of the 15th International Conference on Information Systems for Crisis Response and Management","author":[{"full_name":"Rauchecker, Gerhard","first_name":"Gerhard","last_name":"Rauchecker"},{"full_name":"Schryen, Guido","first_name":"Guido","id":"72850","last_name":"Schryen"}],"file":[{"date_created":"2018-12-07T11:25:06Z","file_name":"2018_ISCRAM_Conference_Proceedings - Publication Version.pdf","access_level":"open_access","file_id":"6020","creator":"hsiemes","file_size":488472,"relation":"main_file","date_updated":"2018-12-13T15:05:44Z","content_type":"application/pdf"}]},{"conference":{"end_date":"2018-11-07","start_date":"2018-11-04","name":"20th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS)","location":"Tokyo"},"_id":"4411","intvolume":" 11201","type":"conference","year":"2018","citation":{"apa":"Knollmann, T., & Scheideler, C. (2018). A Self-Stabilizing Hashed Patricia Trie. In T. Izumi & P. Kuznetsov (Eds.), Proceedings of the 20th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS) (Vol. 11201). Tokyo: Springer, Cham. https://doi.org/10.1007/978-3-030-03232-6_1","ama":"Knollmann T, Scheideler C. A Self-Stabilizing Hashed Patricia Trie. In: Izumi T, Kuznetsov P, eds. Proceedings of the 20th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS). Vol 11201. Lecture Notes of Computer Science. Springer, Cham; 2018. doi:10.1007/978-3-030-03232-6_1","chicago":"Knollmann, Till, and Christian Scheideler. “A Self-Stabilizing Hashed Patricia Trie.” In Proceedings of the 20th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS), edited by Taisuke Izumi and Petr Kuznetsov, Vol. 11201. Lecture Notes of Computer Science. Springer, Cham, 2018. https://doi.org/10.1007/978-3-030-03232-6_1.","bibtex":"@inproceedings{Knollmann_Scheideler_2018, series={Lecture Notes of Computer Science}, title={A Self-Stabilizing Hashed Patricia Trie}, volume={11201}, DOI={10.1007/978-3-030-03232-6_1}, booktitle={Proceedings of the 20th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS)}, publisher={Springer, Cham}, author={Knollmann, Till and Scheideler, Christian}, editor={Izumi, Taisuke and Kuznetsov, PetrEditors}, year={2018}, collection={Lecture Notes of Computer Science} }","mla":"Knollmann, Till, and Christian Scheideler. “A Self-Stabilizing Hashed Patricia Trie.” Proceedings of the 20th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS), edited by Taisuke Izumi and Petr Kuznetsov, vol. 11201, Springer, Cham, 2018, doi:10.1007/978-3-030-03232-6_1.","short":"T. Knollmann, C. Scheideler, in: T. Izumi, P. Kuznetsov (Eds.), Proceedings of the 20th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS), Springer, Cham, 2018.","ieee":"T. Knollmann and C. Scheideler, “A Self-Stabilizing Hashed Patricia Trie,” in Proceedings of the 20th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS), Tokyo, 2018, vol. 11201."},"abstract":[{"lang":"eng","text":"While a lot of research in distributed computing has covered solutions for self-stabilizing computing and topologies, there is far less work on self-stabilization for distributed data structures.\r\nConsidering crashing peers in peer-to-peer networks, it should not be taken for granted that a distributed data structure remains intact.\r\nIn this work, we present a self-stabilizing protocol for a distributed data structure called the hashed Patricia Trie (Kniesburges and Scheideler WALCOM'11) that enables efficient prefix search on a set of keys.\r\nThe data structure has a wide area of applications including string matching problems while offering low overhead and efficient operations when embedded on top of a distributed hash table.\r\nEspecially, longest prefix matching for $x$ can be done in $\\mathcal{O}(\\log |x|)$ hash table read accesses.\r\nWe show how to maintain the structure in a self-stabilizing way.\r\nOur protocol assures low overhead in a legal state and a total (asymptotically optimal) memory demand of $\\Theta(d)$ bits, where $d$ is the number of bits needed for storing all keys."}],"user_id":"39241","ddc":["000"],"file":[{"file_name":"ASelf-stabilizingHashedPatrici.pdf","date_created":"2018-11-02T14:38:37Z","access_level":"closed","creator":"ups","file_id":"5277","file_size":500005,"relation":"main_file","success":1,"date_updated":"2018-11-02T14:38:37Z","content_type":"application/pdf"}],"keyword":["Self-Stabilizing","Prefix Search","Distributed Data Structure"],"publication":"Proceedings of the 20th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS)","file_date_updated":"2018-11-02T14:38:37Z","publisher":"Springer, Cham","author":[{"full_name":"Knollmann, Till","orcid":"0000-0003-2014-4696","first_name":"Till","id":"39241","last_name":"Knollmann"},{"id":"20792","last_name":"Scheideler","full_name":"Scheideler, Christian","first_name":"Christian"}],"date_created":"2018-09-17T13:12:18Z","status":"public","has_accepted_license":"1","volume":11201,"date_updated":"2022-01-06T07:01:02Z","doi":"10.1007/978-3-030-03232-6_1","series_title":"Lecture Notes of Computer Science","language":[{"iso":"eng"}],"external_id":{"arxiv":["1809.04923"]},"title":"A Self-Stabilizing Hashed Patricia Trie","department":[{"_id":"63"},{"_id":"79"}],"project":[{"_id":"1","name":"SFB 901"},{"name":"SFB 901 - Project Area A","_id":"2"},{"name":"SFB 901 - Subproject A1","_id":"5"}],"editor":[{"first_name":"Taisuke","full_name":"Izumi, Taisuke","last_name":"Izumi"},{"full_name":"Kuznetsov, Petr","first_name":"Petr","last_name":"Kuznetsov"}]},{"title":"Intelligent Production of Wire Bonds using Multi-Objective Optimization – Insights, Opportunities and Challenges","user_id":"210","abstract":[{"lang":"eng","text":"Ultrasonic wire bonding is an indispensable process in the industrial manufacturing of semiconductor devices. Copper wire is increasingly replacing the well-established aluminium wire because of its superior electrical, thermal and mechanical properties. Copper wire processes differ significantly from aluminium processes and are more sensitive to disturbances, which reduces the range of parameter values suitable for a stable process. Disturbances can be compensated by an adaption of process parameters, but finding suitable parameters manually is difficult and time-consuming. This paper presents a physical model of the ultrasonic wire bonding process including the friction contact between tool and wire. This model yields novel insights into the process. A prototype of a multi-objective optimizing bonding machine (MOBM) is presented. It uses multi-objective optimization, based on the complete process model, to automatically select the best operating point as a compromise of concurrent objectives."}],"volume":"Vol. 2018, No. 1, pp. 000572-000577.","status":"public","project":[{"name":"Intelligente Herstellung zuverlässiger Kupferbondverbindungen","grant_number":"02 PQ2210","_id":"92"}],"date_created":"2019-05-27T10:27:45Z","quality_controlled":"1","author":[{"full_name":"Unger, Andreas","first_name":"Andreas","last_name":"Unger"},{"first_name":"Matthias","full_name":"Hunstig, Matthias","last_name":"Hunstig"},{"first_name":"Tobias","full_name":"Meyer, Tobias","last_name":"Meyer"},{"first_name":"Michael","full_name":"Brökelmann, Michael","last_name":"Brökelmann"},{"full_name":"Sextro, Walter","first_name":"Walter","id":"21220","last_name":"Sextro"}],"department":[{"_id":"151"}],"publication":"In Proceedings of IMAPS 2018 – 51st Symposium on Microelectronics, Pasadena, CA, 2018","keyword":["wire bonding","multi-objective optimization","process model","copper wire","self-optimization"],"doi":"10.4071/2380-4505-2018.1.000572","_id":"9999","date_updated":"2020-05-07T05:33:56Z","type":"conference","year":"2018","citation":{"short":"A. Unger, M. Hunstig, T. Meyer, M. Brökelmann, W. Sextro, in: In Proceedings of IMAPS 2018 – 51st Symposium on Microelectronics, Pasadena, CA, 2018, 2018.","ieee":"A. Unger, M. Hunstig, T. Meyer, M. Brökelmann, and W. Sextro, “Intelligent Production of Wire Bonds using Multi-Objective Optimization – Insights, Opportunities and Challenges,” in In Proceedings of IMAPS 2018 – 51st Symposium on Microelectronics, Pasadena, CA, 2018, 2018, vol. Vol. 2018, No. 1, pp. 000572-000577.","apa":"Unger, A., Hunstig, M., Meyer, T., Brökelmann, M., & Sextro, W. (2018). Intelligent Production of Wire Bonds using Multi-Objective Optimization – Insights, Opportunities and Challenges. In In Proceedings of IMAPS 2018 – 51st Symposium on Microelectronics, Pasadena, CA, 2018 (Vol. Vol. 2018, No. 1, pp. 000572-000577.). https://doi.org/10.4071/2380-4505-2018.1.000572","ama":"Unger A, Hunstig M, Meyer T, Brökelmann M, Sextro W. Intelligent Production of Wire Bonds using Multi-Objective Optimization – Insights, Opportunities and Challenges. In: In Proceedings of IMAPS 2018 – 51st Symposium on Microelectronics, Pasadena, CA, 2018. Vol Vol. 2018, No. 1, pp. 000572-000577. ; 2018. doi:10.4071/2380-4505-2018.1.000572","chicago":"Unger, Andreas, Matthias Hunstig, Tobias Meyer, Michael Brökelmann, and Walter Sextro. “Intelligent Production of Wire Bonds Using Multi-Objective Optimization – Insights, Opportunities and Challenges.” In In Proceedings of IMAPS 2018 – 51st Symposium on Microelectronics, Pasadena, CA, 2018, Vol. Vol. 2018, No. 1, pp. 000572-000577., 2018. https://doi.org/10.4071/2380-4505-2018.1.000572.","bibtex":"@inproceedings{Unger_Hunstig_Meyer_Brökelmann_Sextro_2018, title={Intelligent Production of Wire Bonds using Multi-Objective Optimization – Insights, Opportunities and Challenges}, volume={Vol. 2018, No. 1, pp. 000572-000577.}, DOI={10.4071/2380-4505-2018.1.000572}, booktitle={In Proceedings of IMAPS 2018 – 51st Symposium on Microelectronics, Pasadena, CA, 2018}, author={Unger, Andreas and Hunstig, Matthias and Meyer, Tobias and Brökelmann, Michael and Sextro, Walter}, year={2018} }","mla":"Unger, Andreas, et al. “Intelligent Production of Wire Bonds Using Multi-Objective Optimization – Insights, Opportunities and Challenges.” In Proceedings of IMAPS 2018 – 51st Symposium on Microelectronics, Pasadena, CA, 2018, vol. Vol. 2018, No. 1, pp. 000572-000577., 2018, doi:10.4071/2380-4505-2018.1.000572."},"language":[{"iso":"eng"}]},{"title":"Reconsidering interiorization: Self moving across language spacetimes","department":[{"_id":"424"}],"publication_identifier":{"issn":["0732-118X"]},"publication_status":"published","date_updated":"2022-07-18T09:21:16Z","doi":"10.1016/j.newideapsych.2017.12.001","language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"Sociogenesis addresses a pervasive problem in psychology given by Cartesian dualism that assigns the mental an inner locus apart from material activity. Aligning ourselves to the ongoing critical discussions of interiorization in psychology, we explore the crucial notion of space by highlighting language as sociocultural and dialogical activity performed by other-oriented individuals. We discuss space in terms of the “language spacetime”, a symbolic, embodied formation of mutually positioned speaking and listening selves. This leads beyond the “inside-outside” container metaphor and allows for a reformulation of interiorization. Interiorization is conceptualized as a continuous series of different, though mutually related movements between self and other and self and self that lead to and are supported by specific formations in language activity: reversion, transposition, and decoupling. Along a short passage of a video-based interview, we trace the reversion of dialogical positions within the addressivity constellation of the two interlocutors, their interactive creation of a heterotopic spacetime, and the decoupling of one speaker's psychological activity from the concrete here-and-now and the present other by moving and acting into this new sphere. Interiorization appears as a movement at the border of past, present, and possible future(s)."}],"user_id":"42165","publisher":"Elsevier BV","author":[{"last_name":"Bertau","first_name":"Marie-Cécile","full_name":"Bertau, Marie-Cécile"},{"last_name":"Karsten","id":"53917","first_name":"Andrea","full_name":"Karsten, Andrea"}],"publication":"New Ideas in Psychology","keyword":["Interiorization","Dialogical self","Language activity","Voice","Vygotsky","Heterotopia","Video-confrontation"],"volume":49,"status":"public","date_created":"2022-06-24T14:41:20Z","_id":"32158","intvolume":" 49","type":"journal_article","citation":{"short":"M.-C. Bertau, A. Karsten, New Ideas in Psychology 49 (2018) 7–17.","ieee":"M.-C. Bertau and A. Karsten, “Reconsidering interiorization: Self moving across language spacetimes,” New Ideas in Psychology, vol. 49, pp. 7–17, 2018, doi: 10.1016/j.newideapsych.2017.12.001.","chicago":"Bertau, Marie-Cécile, and Andrea Karsten. “Reconsidering Interiorization: Self Moving across Language Spacetimes.” New Ideas in Psychology 49 (2018): 7–17. https://doi.org/10.1016/j.newideapsych.2017.12.001.","ama":"Bertau M-C, Karsten A. Reconsidering interiorization: Self moving across language spacetimes. New Ideas in Psychology. 2018;49:7-17. doi:10.1016/j.newideapsych.2017.12.001","apa":"Bertau, M.-C., & Karsten, A. (2018). Reconsidering interiorization: Self moving across language spacetimes. New Ideas in Psychology, 49, 7–17. https://doi.org/10.1016/j.newideapsych.2017.12.001","bibtex":"@article{Bertau_Karsten_2018, title={Reconsidering interiorization: Self moving across language spacetimes}, volume={49}, DOI={10.1016/j.newideapsych.2017.12.001}, journal={New Ideas in Psychology}, publisher={Elsevier BV}, author={Bertau, Marie-Cécile and Karsten, Andrea}, year={2018}, pages={7–17} }","mla":"Bertau, Marie-Cécile, and Andrea Karsten. “Reconsidering Interiorization: Self Moving across Language Spacetimes.” New Ideas in Psychology, vol. 49, Elsevier BV, 2018, pp. 7–17, doi:10.1016/j.newideapsych.2017.12.001."},"year":"2018","page":"7-17"},{"user_id":"210","title":"Optimization-based reliability control of mechatronic systems","abstract":[{"lang":"eng","text":"Reliability-adaptive systems allow an adaptation of system behavior based on current system reliability. They can extend their lifetime at the cost of lowered performance or vice versa. This can be used to adapt failure behavior according to a maintenance plan, thus increasing availability while using up system capability fully. To facilitate setup, a control algorithm independent of a degradation model is desired. A closed loop control technique for reliability based on a health index, a measure for system degradation, is introduced. It uses self-optimization as means to implement behavior adaptation. This is based on selecting the priorities of objectives that the system pursues. Possible working points are computed beforehand using model-based multiobjective optimization techniques. The controller selects the priorities of objectives and this way balances reliability and performance. As exemplary application, an automatically actuated single plate dry clutch is introduced. The entire reliability control is setup and lifetime experiments are conducted. Results show that the variance of time to failure is reduced greatly, making the failure behavior more predictable. At the same time, the desired usable lifetime can be extended at the cost of system performance to allow for changed maintenance intervals. Together, these possibilities allow for greater system usage and better planning of maintenance."}],"date_created":"2019-05-27T10:21:17Z","status":"public","department":[{"_id":"151"}],"keyword":["dependability","reliability","behavior adaptation","self-optimization","multiobjective optimization","optimal control","automotive drivetrain","clutch system","reliability-adaptive system"],"publisher":"Shaker","author":[{"first_name":"Tobias","full_name":"Meyer, Tobias","last_name":"Meyer"}],"_id":"9994","date_updated":"2023-09-15T12:26:09Z","language":[{"iso":"eng"}],"type":"dissertation","citation":{"chicago":"Meyer, Tobias. Optimization-Based Reliability Control of Mechatronic Systems. Shaker, 2018.","apa":"Meyer, T. (2018). Optimization-based reliability control of mechatronic systems. Shaker.","ama":"Meyer T. Optimization-Based Reliability Control of Mechatronic Systems. Shaker; 2018.","mla":"Meyer, Tobias. Optimization-Based Reliability Control of Mechatronic Systems. Shaker, 2018.","bibtex":"@book{Meyer_2018, title={Optimization-based reliability control of mechatronic systems}, publisher={Shaker}, author={Meyer, Tobias}, year={2018} }","short":"T. Meyer, Optimization-Based Reliability Control of Mechatronic Systems, Shaker, 2018.","ieee":"T. Meyer, Optimization-based reliability control of mechatronic systems. Shaker, 2018."},"year":"2018"},{"doi":"10.1145/3205455.3205548","date_updated":"2023-12-13T10:42:14Z","language":[{"iso":"eng"}],"series_title":"GECCO ’18","title":"Local Search Effects in Bi-Objective Orienteering","place":"New York, NY, USA","publication_identifier":{"isbn":["978-1-4503-5618-3"]},"publication_status":"published","department":[{"_id":"819"}],"_id":"48839","page":"585–592","year":"2018","type":"conference","citation":{"chicago":"Bossek, Jakob, Christian Grimme, Stephan Meisel, Günter Rudolph, and Heike Trautmann. “Local Search Effects in Bi-Objective Orienteering.” In Proceedings of the Genetic and Evolutionary Computation Conference, 585–592. GECCO ’18. New York, NY, USA: Association for Computing Machinery, 2018. https://doi.org/10.1145/3205455.3205548.","ama":"Bossek J, Grimme C, Meisel S, Rudolph G, Trautmann H. Local Search Effects in Bi-Objective Orienteering. In: Proceedings of the Genetic and Evolutionary Computation Conference. GECCO ’18. Association for Computing Machinery; 2018:585–592. doi:10.1145/3205455.3205548","apa":"Bossek, J., Grimme, C., Meisel, S., Rudolph, G., & Trautmann, H. (2018). Local Search Effects in Bi-Objective Orienteering. Proceedings of the Genetic and Evolutionary Computation Conference, 585–592. https://doi.org/10.1145/3205455.3205548","mla":"Bossek, Jakob, et al. “Local Search Effects in Bi-Objective Orienteering.” Proceedings of the Genetic and Evolutionary Computation Conference, Association for Computing Machinery, 2018, pp. 585–592, doi:10.1145/3205455.3205548.","bibtex":"@inproceedings{Bossek_Grimme_Meisel_Rudolph_Trautmann_2018, place={New York, NY, USA}, series={GECCO ’18}, title={Local Search Effects in Bi-Objective Orienteering}, DOI={10.1145/3205455.3205548}, booktitle={Proceedings of the Genetic and Evolutionary Computation Conference}, publisher={Association for Computing Machinery}, author={Bossek, Jakob and Grimme, Christian and Meisel, Stephan and Rudolph, Günter and Trautmann, Heike}, year={2018}, pages={585–592}, collection={GECCO ’18} }","short":"J. Bossek, C. Grimme, S. Meisel, G. Rudolph, H. Trautmann, in: Proceedings of the Genetic and Evolutionary Computation Conference, Association for Computing Machinery, New York, NY, USA, 2018, pp. 585–592.","ieee":"J. Bossek, C. Grimme, S. Meisel, G. Rudolph, and H. Trautmann, “Local Search Effects in Bi-Objective Orienteering,” in Proceedings of the Genetic and Evolutionary Computation Conference, 2018, pp. 585–592, doi: 10.1145/3205455.3205548."},"user_id":"102979","extern":"1","abstract":[{"text":"We analyze the effects of including local search techniques into a multi-objective evolutionary algorithm for solving a bi-objective orienteering problem with a single vehicle while the two conflicting objectives are minimization of travel time and maximization of the number of visited customer locations. Experiments are based on a large set of specifically designed problem instances with different characteristics and it is shown that local search techniques focusing on one of the objectives only improve the performance of the evolutionary algorithm in terms of both objectives. The analysis also shows that local search techniques are capable of sending locally optimal solutions to foremost fronts of the multi-objective optimization process, and that these solutions then become the leading factors of the evolutionary process.","lang":"eng"}],"date_created":"2023-11-14T15:58:51Z","status":"public","keyword":["combinatorial optimization","metaheuristics","multi-objective optimization","orienteering","transportation"],"publication":"Proceedings of the Genetic and Evolutionary Computation Conference","author":[{"first_name":"Jakob","full_name":"Bossek, Jakob","orcid":"0000-0002-4121-4668","last_name":"Bossek","id":"102979"},{"first_name":"Christian","full_name":"Grimme, Christian","last_name":"Grimme"},{"last_name":"Meisel","first_name":"Stephan","full_name":"Meisel, Stephan"},{"full_name":"Rudolph, Günter","first_name":"Günter","last_name":"Rudolph"},{"last_name":"Trautmann","full_name":"Trautmann, Heike","first_name":"Heike"}],"publisher":"Association for Computing Machinery"},{"date_created":"2023-11-14T15:58:56Z","status":"public","keyword":["evolutionary optimization","performance assessment","software-tools"],"publication":"Proceedings of the Genetic and Evolutionary Computation Conference Companion","publisher":"Association for Computing Machinery","author":[{"id":"102979","last_name":"Bossek","full_name":"Bossek, Jakob","orcid":"0000-0002-4121-4668","first_name":"Jakob"}],"user_id":"102979","abstract":[{"lang":"eng","text":"Assessing the performance of stochastic optimization algorithms in the field of multi-objective optimization is of utmost importance. Besides the visual comparison of the obtained approximation sets, more sophisticated methods have been proposed in the last decade, e. g., a variety of quantitative performance indicators or statistical tests. In this paper, we present tools implemented in the R package ecr, which assist in performing comprehensive and sound comparison and evaluation of multi-objective evolutionary algorithms following recommendations from the literature."}],"extern":"1","page":"1350–1356","year":"2018","citation":{"ieee":"J. Bossek, “Performance Assessment of Multi-Objective Evolutionary Algorithms with the R Package ecr,” in Proceedings of the Genetic and Evolutionary Computation Conference Companion, 2018, pp. 1350–1356, doi: 10.1145/3205651.3208312.","short":"J. Bossek, in: Proceedings of the Genetic and Evolutionary Computation Conference Companion, Association for Computing Machinery, New York, NY, USA, 2018, pp. 1350–1356.","bibtex":"@inproceedings{Bossek_2018, place={New York, NY, USA}, series={GECCO ’18}, title={Performance Assessment of Multi-Objective Evolutionary Algorithms with the R Package ecr}, DOI={10.1145/3205651.3208312}, booktitle={Proceedings of the Genetic and Evolutionary Computation Conference Companion}, publisher={Association for Computing Machinery}, author={Bossek, Jakob}, year={2018}, pages={1350–1356}, collection={GECCO ’18} }","mla":"Bossek, Jakob. “Performance Assessment of Multi-Objective Evolutionary Algorithms with the R Package Ecr.” Proceedings of the Genetic and Evolutionary Computation Conference Companion, Association for Computing Machinery, 2018, pp. 1350–1356, doi:10.1145/3205651.3208312.","chicago":"Bossek, Jakob. “Performance Assessment of Multi-Objective Evolutionary Algorithms with the R Package Ecr.” In Proceedings of the Genetic and Evolutionary Computation Conference Companion, 1350–1356. GECCO ’18. New York, NY, USA: Association for Computing Machinery, 2018. https://doi.org/10.1145/3205651.3208312.","apa":"Bossek, J. (2018). Performance Assessment of Multi-Objective Evolutionary Algorithms with the R Package ecr. Proceedings of the Genetic and Evolutionary Computation Conference Companion, 1350–1356. https://doi.org/10.1145/3205651.3208312","ama":"Bossek J. Performance Assessment of Multi-Objective Evolutionary Algorithms with the R Package ecr. In: Proceedings of the Genetic and Evolutionary Computation Conference Companion. GECCO ’18. Association for Computing Machinery; 2018:1350–1356. doi:10.1145/3205651.3208312"},"type":"conference","_id":"48867","publication_status":"published","publication_identifier":{"isbn":["978-1-4503-5764-7"]},"department":[{"_id":"819"}],"title":"Performance Assessment of Multi-Objective Evolutionary Algorithms with the R Package ecr","place":"New York, NY, USA","language":[{"iso":"eng"}],"series_title":"GECCO ’18","doi":"10.1145/3205651.3208312","date_updated":"2023-12-13T10:46:04Z"},{"language":[{"iso":"eng"}],"series_title":"GECCO’18","doi":"10.1145/3205651.3208233","date_updated":"2023-12-13T10:48:38Z","publication_identifier":{"isbn":["978-1-4503-5764-7"]},"department":[{"_id":"819"}],"title":"Parameterization of State-of-the-Art Performance Indicators: A Robustness Study Based on Inexact TSP Solvers","place":"New York, NY, USA","page":"1737–1744","citation":{"mla":"Kerschke, Pascal, et al. “Parameterization of State-of-the-Art Performance Indicators: A Robustness Study Based on Inexact TSP Solvers.” Proceedings of the Genetic and Evolutionary Computation Conference Companion, Association for Computing Machinery, 2018, pp. 1737–1744, doi:10.1145/3205651.3208233.","bibtex":"@inproceedings{Kerschke_Bossek_Trautmann_2018, place={New York, NY, USA}, series={GECCO’18}, title={Parameterization of State-of-the-Art Performance Indicators: A Robustness Study Based on Inexact TSP Solvers}, DOI={10.1145/3205651.3208233}, booktitle={Proceedings of the Genetic and Evolutionary Computation Conference Companion}, publisher={Association for Computing Machinery}, author={Kerschke, Pascal and Bossek, Jakob and Trautmann, Heike}, year={2018}, pages={1737–1744}, collection={GECCO’18} }","chicago":"Kerschke, Pascal, Jakob Bossek, and Heike Trautmann. “Parameterization of State-of-the-Art Performance Indicators: A Robustness Study Based on Inexact TSP Solvers.” In Proceedings of the Genetic and Evolutionary Computation Conference Companion, 1737–1744. GECCO’18. New York, NY, USA: Association for Computing Machinery, 2018. https://doi.org/10.1145/3205651.3208233.","ama":"Kerschke P, Bossek J, Trautmann H. Parameterization of State-of-the-Art Performance Indicators: A Robustness Study Based on Inexact TSP Solvers. In: Proceedings of the Genetic and Evolutionary Computation Conference Companion. GECCO’18. Association for Computing Machinery; 2018:1737–1744. doi:10.1145/3205651.3208233","apa":"Kerschke, P., Bossek, J., & Trautmann, H. (2018). Parameterization of State-of-the-Art Performance Indicators: A Robustness Study Based on Inexact TSP Solvers. Proceedings of the Genetic and Evolutionary Computation Conference Companion, 1737–1744. https://doi.org/10.1145/3205651.3208233","ieee":"P. Kerschke, J. Bossek, and H. Trautmann, “Parameterization of State-of-the-Art Performance Indicators: A Robustness Study Based on Inexact TSP Solvers,” in Proceedings of the Genetic and Evolutionary Computation Conference Companion, 2018, pp. 1737–1744, doi: 10.1145/3205651.3208233.","short":"P. Kerschke, J. Bossek, H. Trautmann, in: Proceedings of the Genetic and Evolutionary Computation Conference Companion, Association for Computing Machinery, New York, NY, USA, 2018, pp. 1737–1744."},"type":"conference","year":"2018","_id":"48885","date_created":"2023-11-14T15:58:59Z","status":"public","keyword":["algorithm selection","optimization","performance measures","transportation","travelling salesperson problem"],"publication":"Proceedings of the Genetic and Evolutionary Computation Conference Companion","publisher":"Association for Computing Machinery","author":[{"last_name":"Kerschke","first_name":"Pascal","full_name":"Kerschke, Pascal"},{"orcid":"0000-0002-4121-4668","full_name":"Bossek, Jakob","first_name":"Jakob","id":"102979","last_name":"Bossek"},{"last_name":"Trautmann","full_name":"Trautmann, Heike","first_name":"Heike"}],"user_id":"102979","extern":"1","abstract":[{"lang":"eng","text":"Performance comparisons of optimization algorithms are heavily influenced by the underlying indicator(s). In this paper we investigate commonly used performance indicators for single-objective stochastic solvers, such as the Penalized Average Runtime (e.g., PAR10) or the Expected Running Time (ERT), based on exemplary benchmark performances of state-of-the-art inexact TSP solvers. Thereby, we introduce a methodology for analyzing the effects of (usually heuristically set) indicator parametrizations - such as the penalty factor and the method used for aggregating across multiple runs - w.r.t. the robustness of the considered optimization algorithms."}]},{"title":"Experiential or Self-Regulated Learning: A Critical Reflection of Entrepreneurial Learning Processes","department":[{"_id":"208"},{"_id":"282"}],"publication_identifier":{"unknown":["2194-6175"]},"date_updated":"2024-03-21T14:43:08Z","language":[{"iso":"eng"}],"abstract":[{"text":"Research on entrepreneurial learning highlights the importance of experience and prior knowledge to entrepreneurial success. However, a conundrum remains and we are still seeking answers as to why some novice entrepreneurs learn successfully from their experiences and succeed, while some experienced entrepreneurs fail with their ventures. In order to advance the discussion about the role of experience during entrepreneurial learning, our critical reflection aims to (1) highlight some of the shortcomings of experiential learning theory (ELT) and (2) illustrate how alternative theoretical perspectives have the potential to advance our conceptual understanding of entrepreneurial learning processes. We argue for an explanation of entrepreneurial learning as a dynamic and self-regulated process that relies on planning, monitoring, and self-reflection.","lang":"eng"}],"user_id":"71994","publication":"Entrepreneurship Research Journal","keyword":["entrepreneurial learning","experiential learning","self-regulated learning"],"publisher":"de @Gruyter","author":[{"last_name":"Fust","first_name":"Alexander Paul","full_name":"Fust, Alexander Paul"},{"id":"71994","last_name":"Jenert","full_name":"Jenert, Tobias","orcid":" https://orcid.org/0000-0001-9262-5646","first_name":"Tobias"},{"last_name":"Winkler","first_name":"Christoph","full_name":"Winkler, Christoph"}],"quality_controlled":"1","date_created":"2018-09-18T08:47:00Z","status":"public","volume":8,"_id":"4419","intvolume":" 8","issue":"2","page":"1-11","year":"2018","type":"journal_article","citation":{"ieee":"A. P. Fust, T. Jenert, and C. Winkler, “Experiential or Self-Regulated Learning: A Critical Reflection of Entrepreneurial Learning Processes,” Entrepreneurship Research Journal, vol. 8, no. 2, pp. 1–11, 2018.","short":"A.P. Fust, T. Jenert, C. Winkler, Entrepreneurship Research Journal 8 (2018) 1–11.","mla":"Fust, Alexander Paul, et al. “Experiential or Self-Regulated Learning: A Critical Reflection of Entrepreneurial Learning Processes.” Entrepreneurship Research Journal, vol. 8, no. 2, de @Gruyter, 2018, pp. 1–11.","bibtex":"@article{Fust_Jenert_Winkler_2018, title={Experiential or Self-Regulated Learning: A Critical Reflection of Entrepreneurial Learning Processes}, volume={8}, number={2}, journal={Entrepreneurship Research Journal}, publisher={de @Gruyter}, author={Fust, Alexander Paul and Jenert, Tobias and Winkler, Christoph}, year={2018}, pages={1–11} }","chicago":"Fust, Alexander Paul, Tobias Jenert, and Christoph Winkler. “Experiential or Self-Regulated Learning: A Critical Reflection of Entrepreneurial Learning Processes.” Entrepreneurship Research Journal 8, no. 2 (2018): 1–11.","ama":"Fust AP, Jenert T, Winkler C. Experiential or Self-Regulated Learning: A Critical Reflection of Entrepreneurial Learning Processes. Entrepreneurship Research Journal. 2018;8(2):1-11.","apa":"Fust, A. P., Jenert, T., & Winkler, C. (2018). Experiential or Self-Regulated Learning: A Critical Reflection of Entrepreneurial Learning Processes. Entrepreneurship Research Journal, 8(2), 1–11."}},{"issue":"3-4","_id":"9862","intvolume":" 5","type":"journal_article","citation":{"ieee":"R. Mahnken, “‘A variational formulation for fuzzy analysis in continuum mechanics,’” Mathematics and Mechanics of complex systems, vol. 5, no. 3–4, 2017.","short":"R. Mahnken, Mathematics and Mechanics of Complex Systems 5 (2017).","mla":"Mahnken, Rolf. “‘A Variational Formulation for Fuzzy Analysis in Continuum Mechanics.’” Mathematics and Mechanics of Complex Systems, vol. 5, no. 3–4, 2017.","bibtex":"@article{Mahnken_2017, title={“A variational formulation for fuzzy analysis in continuum mechanics”}, volume={5}, number={3–4}, journal={Mathematics and Mechanics of complex systems}, author={Mahnken, Rolf}, year={2017} }","ama":"Mahnken R. “A variational formulation for fuzzy analysis in continuum mechanics.” Mathematics and Mechanics of complex systems. 2017;5(3-4).","apa":"Mahnken, R. (2017). “A variational formulation for fuzzy analysis in continuum mechanics.” Mathematics and Mechanics of Complex Systems, 5(3–4).","chicago":"Mahnken, Rolf. “‘A Variational Formulation for Fuzzy Analysis in Continuum Mechanics.’” Mathematics and Mechanics of Complex Systems 5, no. 3–4 (2017)."},"year":"2017","main_file_link":[{"url":"https://msp.org/memocs/2017/5-3/memocs-v5-n3-p03-s.pdf","open_access":"1"}],"user_id":"78813","abstract":[{"lang":"eng","text":"In order to improve the credibility of modern simulation tools, uncertainties of different kinds have to be considered. This work is focused on epistemic uncertainties in the framework of continuum mechanics, which are taken into account by fuzzy analysis. The underlying min-max optimization problem of the extension principle is approximated by α-discretization, resulting in a separation of minimum and maximum problems. To become more universal, so-called quantities of interest are employed, which allow a general formulation for the target problem of interest. In this way, the relation to parameter identification problems based on least-squares functions is highlighted. The solutions of the related optimization problems with simple constraints are obtained with a gradient-based scheme, which is derived from a sensitvity analysis for the target problem by means of a variational formulation. Two numerical examples for the fuzzy analysis of material parameters are concerned with a necking problem at large strain elastoplasticity and a perforated strip at large strain hyperelasticity to demonstrate the versatility of the proposed variational formulation. "}],"date_created":"2019-05-20T11:36:47Z","status":"public","volume":5,"keyword":["fuzzy analysis","α-level optimization","quantities of interest","optimization with simple constraints","large strain elasticity","large strain elastoplasticity"],"publication":"Mathematics and Mechanics of complex systems","author":[{"last_name":"Mahnken","full_name":"Mahnken, Rolf","first_name":"Rolf"}],"oa":"1","date_updated":"2019-05-27T12:54:35Z","language":[{"iso":"eng"}],"title":"\"A variational formulation for fuzzy analysis in continuum mechanics\"","publication_status":"published","publication_identifier":{"issn":[" 2325-3444"]},"department":[{"_id":"154"}]},{"page":"390 - 399","year":"2017","type":"journal_article","citation":{"mla":"Kaul, Thorben, et al. “Formulation of Reliability-Related Objective Functions for Design of Intelligent Mechatronic Systems.” SAGE Journals, vol. Vol. 231(4), 2017, pp. 390–99, doi:10.1177/1748006X17709376.","bibtex":"@article{Kaul_Meyer_Sextro_2017, title={Formulation of reliability-related objective functions for design of intelligent mechatronic systems}, volume={Vol. 231(4)}, DOI={10.1177/1748006X17709376}, journal={SAGE Journals}, author={Kaul, Thorben and Meyer, Tobias and Sextro, Walter}, year={2017}, pages={390–399} }","chicago":"Kaul, Thorben, Tobias Meyer, and Walter Sextro. “Formulation of Reliability-Related Objective Functions for Design of Intelligent Mechatronic Systems.” SAGE Journals Vol. 231(4) (2017): 390–99. https://doi.org/10.1177/1748006X17709376.","apa":"Kaul, T., Meyer, T., & Sextro, W. (2017). Formulation of reliability-related objective functions for design of intelligent mechatronic systems. SAGE Journals, Vol. 231(4), 390–399. https://doi.org/10.1177/1748006X17709376","ama":"Kaul T, Meyer T, Sextro W. Formulation of reliability-related objective functions for design of intelligent mechatronic systems. SAGE Journals. 2017;Vol. 231(4):390-399. doi:10.1177/1748006X17709376","ieee":"T. Kaul, T. Meyer, and W. Sextro, “Formulation of reliability-related objective functions for design of intelligent mechatronic systems,” SAGE Journals, vol. Vol. 231(4), pp. 390–399, 2017.","short":"T. Kaul, T. Meyer, W. Sextro, SAGE Journals Vol. 231(4) (2017) 390–399."},"language":[{"iso":"eng"}],"_id":"9976","date_updated":"2019-09-16T10:20:49Z","doi":"10.1177/1748006X17709376","publication":"SAGE Journals","department":[{"_id":"151"}],"keyword":["Integrated model","reliability","system behavior","Bayesian network","multiobjective optimization"],"author":[{"last_name":"Kaul","id":"14802","first_name":"Thorben","full_name":"Kaul, Thorben"},{"full_name":"Meyer, Tobias","first_name":"Tobias","last_name":"Meyer"},{"last_name":"Sextro","id":"21220","first_name":"Walter","full_name":"Sextro, Walter"}],"quality_controlled":"1","volume":"Vol. 231(4)","date_created":"2019-05-27T09:37:46Z","status":"public","abstract":[{"text":"State-of-the-art mechatronic systems offer inherent intelligence that enables them to autonomously adapt their behavior to current environmental conditions and to their own system state. This autonomous behavior adaptation is made possible by software in combination with complex sensor and actuator systems and by sophisticated information processing, all of which make these systems increasingly complex. This increasing complexity makes the design process a challenging task and brings new complex possibilities for operation and maintenance. However, with the risk of increased system complexity also comes the chance to adapt system behavior based on current reliability, which in turn increases reliability. The development of such an adaption strategy requires appropriate methods to evaluate reliability based on currently selected system behavior. A common approach to implement such adaptivity is to base system behavior on different working points that are obtained using multiobjective optimization. During operation, selection among these allows a changed operating strategy. To allow for multiobjective optimization, an accurate system model including system reliability is required. This model is repeatedly evaluated by the optimization algorithm. At present, modeling of system reliability and synchronization of the models of behavior and reliability is a laborious manual task and thus very error-prone. Since system behavior is crucial for system reliability, an integrated model is introduced that integrates system behavior and system reliability. The proposed approach is used to formulate reliability-related objective functions for a clutch test rig that are used to compute feasible working points using multiobjective optimization.","lang":"eng"}],"title":"Formulation of reliability-related objective functions for design of intelligent mechatronic systems","user_id":"55222"},{"title":"Estimation of Remaining Useful Lifetime of Piezoelectric Transducers Based on Self-Sensing","user_id":"55222","abstract":[{"lang":"eng","text":"Piezoelectric transducers are used in a wide range of applications. Reliability of these transducers is an important aspect in their application. Prognostics, which involve continuous monitoring of the health of technical systems and using this information to estimate the current health state and consequently predict the remaining useful lifetime (RUL), can be used to increase the reliability, safety, and availability of the transducers. This is achieved by utilizing the health state and RUL predictions to adaptively control the usage of the components or to schedule appropriate maintenance without interrupting operation. In this work, a prognostic approach utilizing self-sensing, where electric signals of a piezoelectric transducer are used as the condition monitoring data, is proposed. The approach involves training machine learning algorithms to model the degradation of the transducers through a health index and the use of the learned model to estimate the health index of similar transducers. The current health index is then used to estimate RUL of test components. The feasibility of the approach is demonstrated using piezoelectric bimorphs and the results show that the method is accurate in predicting the health index and RUL."}],"status":"public","date_created":"2019-05-27T09:41:06Z","author":[{"last_name":"Kimotho","full_name":"Kimotho, James Kuria","first_name":"James Kuria"},{"last_name":"Sextro","id":"21220","first_name":"Walter","full_name":"Sextro, Walter"},{"full_name":"Hemsel, Tobias","first_name":"Tobias","id":"210","last_name":"Hemsel"}],"quality_controlled":"1","publication":"IEEE Transactions on Reliability","department":[{"_id":"151"}],"keyword":["Estimation of Remaining Useful Lifetime of Piezoelectric Transducers Based on Self-Sensing"],"doi":"10.1109/TR.2017.2710260","_id":"9978","date_updated":"2019-09-16T10:32:05Z","type":"conference","citation":{"mla":"Kimotho, James Kuria, et al. “Estimation of Remaining Useful Lifetime of Piezoelectric Transducers Based on Self-Sensing.” IEEE Transactions on Reliability, 2017, pp. 1–10, doi:10.1109/TR.2017.2710260.","bibtex":"@inproceedings{Kimotho_Sextro_Hemsel_2017, title={Estimation of Remaining Useful Lifetime of Piezoelectric Transducers Based on Self-Sensing}, DOI={10.1109/TR.2017.2710260}, booktitle={IEEE Transactions on Reliability}, author={Kimotho, James Kuria and Sextro, Walter and Hemsel, Tobias}, year={2017}, pages={1–10} }","chicago":"Kimotho, James Kuria, Walter Sextro, and Tobias Hemsel. “Estimation of Remaining Useful Lifetime of Piezoelectric Transducers Based on Self-Sensing.” In IEEE Transactions on Reliability, 1–10, 2017. https://doi.org/10.1109/TR.2017.2710260.","ama":"Kimotho JK, Sextro W, Hemsel T. Estimation of Remaining Useful Lifetime of Piezoelectric Transducers Based on Self-Sensing. In: IEEE Transactions on Reliability. ; 2017:1-10. doi:10.1109/TR.2017.2710260","apa":"Kimotho, J. K., Sextro, W., & Hemsel, T. (2017). Estimation of Remaining Useful Lifetime of Piezoelectric Transducers Based on Self-Sensing. In IEEE Transactions on Reliability (pp. 1–10). https://doi.org/10.1109/TR.2017.2710260","ieee":"J. K. Kimotho, W. Sextro, and T. Hemsel, “Estimation of Remaining Useful Lifetime of Piezoelectric Transducers Based on Self-Sensing,” in IEEE Transactions on Reliability, 2017, pp. 1–10.","short":"J.K. Kimotho, W. Sextro, T. Hemsel, in: IEEE Transactions on Reliability, 2017, pp. 1–10."},"year":"2017","page":"1 - 10","language":[{"iso":"eng"}]},{"department":[{"_id":"78"}],"keyword":["Linux","cache storage","microprocessor chips","multiprocessing systems","LEON3-Linux based multicore processor","MiBench suite","block sizes","cache adaptation","evolvable caches","memory-to-cache-index mapping function","processor caches","reconfigurable cache mapping optimization","reconfigurable hardware technology","replacement strategies","standard Linux OS","time a complete hardware implementation","Hardware","Indexes","Linux","Measurement","Multicore processing","Optimization","Training"],"publication":"2017 International Conference on Field Programmable Technology (ICFPT)","author":[{"last_name":"Ho","first_name":"Nam","full_name":"Ho, Nam"},{"last_name":"Kaufmann","first_name":"Paul","full_name":"Kaufmann, Paul"},{"id":"398","last_name":"Platzner","full_name":"Platzner, Marco","first_name":"Marco"}],"date_created":"2019-07-10T11:22:59Z","status":"public","user_id":"398","title":"Evolvable caches: Optimization of reconfigurable cache mappings for a LEON3/Linux-based multi-core processor","language":[{"iso":"eng"}],"page":"215-218","citation":{"ieee":"N. Ho, P. Kaufmann, and M. Platzner, “Evolvable caches: Optimization of reconfigurable cache mappings for a LEON3/Linux-based multi-core processor,” in 2017 International Conference on Field Programmable Technology (ICFPT), 2017, pp. 215–218.","short":"N. Ho, P. Kaufmann, M. Platzner, in: 2017 International Conference on Field Programmable Technology (ICFPT), 2017, pp. 215–218.","mla":"Ho, Nam, et al. “Evolvable Caches: Optimization of Reconfigurable Cache Mappings for a LEON3/Linux-Based Multi-Core Processor.” 2017 International Conference on Field Programmable Technology (ICFPT), 2017, pp. 215–18, doi:10.1109/FPT.2017.8280144.","bibtex":"@inproceedings{Ho_Kaufmann_Platzner_2017, title={Evolvable caches: Optimization of reconfigurable cache mappings for a LEON3/Linux-based multi-core processor}, DOI={10.1109/FPT.2017.8280144}, booktitle={2017 International Conference on Field Programmable Technology (ICFPT)}, author={Ho, Nam and Kaufmann, Paul and Platzner, Marco}, year={2017}, pages={215–218} }","chicago":"Ho, Nam, Paul Kaufmann, and Marco Platzner. “Evolvable Caches: Optimization of Reconfigurable Cache Mappings for a LEON3/Linux-Based Multi-Core Processor.” In 2017 International Conference on Field Programmable Technology (ICFPT), 215–18, 2017. https://doi.org/10.1109/FPT.2017.8280144.","ama":"Ho N, Kaufmann P, Platzner M. Evolvable caches: Optimization of reconfigurable cache mappings for a LEON3/Linux-based multi-core processor. In: 2017 International Conference on Field Programmable Technology (ICFPT). ; 2017:215-218. doi:10.1109/FPT.2017.8280144","apa":"Ho, N., Kaufmann, P., & Platzner, M. (2017). Evolvable caches: Optimization of reconfigurable cache mappings for a LEON3/Linux-based multi-core processor. In 2017 International Conference on Field Programmable Technology (ICFPT) (pp. 215–218). https://doi.org/10.1109/FPT.2017.8280144"},"type":"conference","year":"2017","date_updated":"2022-01-06T06:50:49Z","_id":"10676","doi":"10.1109/FPT.2017.8280144"},{"author":[{"last_name":"Guettatfi","full_name":"Guettatfi, Zakarya","first_name":"Zakarya"},{"full_name":"Hübner, Philipp","first_name":"Philipp","last_name":"Hübner"},{"id":"398","last_name":"Platzner","full_name":"Platzner, Marco","first_name":"Marco"},{"last_name":"Rinner","first_name":"Bernhard","full_name":"Rinner, Bernhard"}],"department":[{"_id":"78"}],"keyword":["embedded systems","image sensors","power aware computing","wireless sensor networks","Zynq-based VSN node prototype","computational self-awareness","design approach","platform levels","power consumption","visual sensor networks","visual sensor nodes","Cameras","Hardware","Middleware","Multicore processing","Operating systems","Runtime","Reconfigurable platforms","distributed embedded systems","performance-resource trade-off","self-awareness","visual sensor nodes"],"publication":"12th International Symposium on Reconfigurable Communication-centric Systems-on-Chip (ReCoSoC)","status":"public","date_created":"2019-07-10T12:13:15Z","user_id":"3118","title":"Computational self-awareness as design approach for visual sensor nodes","language":[{"iso":"eng"}],"year":"2017","citation":{"chicago":"Guettatfi, Zakarya, Philipp Hübner, Marco Platzner, and Bernhard Rinner. “Computational Self-Awareness as Design Approach for Visual Sensor Nodes.” In 12th International Symposium on Reconfigurable Communication-Centric Systems-on-Chip (ReCoSoC), 1–8, 2017. https://doi.org/10.1109/ReCoSoC.2017.8016147.","ama":"Guettatfi Z, Hübner P, Platzner M, Rinner B. Computational self-awareness as design approach for visual sensor nodes. In: 12th International Symposium on Reconfigurable Communication-Centric Systems-on-Chip (ReCoSoC). ; 2017:1-8. doi:10.1109/ReCoSoC.2017.8016147","apa":"Guettatfi, Z., Hübner, P., Platzner, M., & Rinner, B. (2017). Computational self-awareness as design approach for visual sensor nodes. In 12th International Symposium on Reconfigurable Communication-centric Systems-on-Chip (ReCoSoC) (pp. 1–8). https://doi.org/10.1109/ReCoSoC.2017.8016147","bibtex":"@inproceedings{Guettatfi_Hübner_Platzner_Rinner_2017, title={Computational self-awareness as design approach for visual sensor nodes}, DOI={10.1109/ReCoSoC.2017.8016147}, booktitle={12th International Symposium on Reconfigurable Communication-centric Systems-on-Chip (ReCoSoC)}, author={Guettatfi, Zakarya and Hübner, Philipp and Platzner, Marco and Rinner, Bernhard}, year={2017}, pages={1–8} }","mla":"Guettatfi, Zakarya, et al. “Computational Self-Awareness as Design Approach for Visual Sensor Nodes.” 12th International Symposium on Reconfigurable Communication-Centric Systems-on-Chip (ReCoSoC), 2017, pp. 1–8, doi:10.1109/ReCoSoC.2017.8016147.","short":"Z. Guettatfi, P. Hübner, M. Platzner, B. Rinner, in: 12th International Symposium on Reconfigurable Communication-Centric Systems-on-Chip (ReCoSoC), 2017, pp. 1–8.","ieee":"Z. Guettatfi, P. Hübner, M. Platzner, and B. Rinner, “Computational self-awareness as design approach for visual sensor nodes,” in 12th International Symposium on Reconfigurable Communication-centric Systems-on-Chip (ReCoSoC), 2017, pp. 1–8."},"type":"conference","page":"1-8","_id":"10780","date_updated":"2022-01-06T06:50:50Z","doi":"10.1109/ReCoSoC.2017.8016147"},{"issue":"3","intvolume":" 8","_id":"29462","page":"627-641","year":"2017","citation":{"ieee":"S. Sadeghi-Kohan, M. Kamal, and Z. Navabi, “Self-Adjusting Monitor for Measuring Aging Rate and Advancement,” IEEE Transactions on Emerging Topics in Computing, vol. 8, no. 3, pp. 627–641, 2017, doi: 10.1109/tetc.2017.2771441.","short":"S. Sadeghi-Kohan, M. Kamal, Z. Navabi, IEEE Transactions on Emerging Topics in Computing 8 (2017) 627–641.","bibtex":"@article{Sadeghi-Kohan_Kamal_Navabi_2017, title={Self-Adjusting Monitor for Measuring Aging Rate and Advancement}, volume={8}, DOI={10.1109/tetc.2017.2771441}, number={3}, journal={IEEE Transactions on Emerging Topics in Computing}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Sadeghi-Kohan, Somayeh and Kamal, Mehdi and Navabi, Zainalabedin}, year={2017}, pages={627–641} }","mla":"Sadeghi-Kohan, Somayeh, et al. “Self-Adjusting Monitor for Measuring Aging Rate and Advancement.” IEEE Transactions on Emerging Topics in Computing, vol. 8, no. 3, Institute of Electrical and Electronics Engineers (IEEE), 2017, pp. 627–41, doi:10.1109/tetc.2017.2771441.","apa":"Sadeghi-Kohan, S., Kamal, M., & Navabi, Z. (2017). Self-Adjusting Monitor for Measuring Aging Rate and Advancement. IEEE Transactions on Emerging Topics in Computing, 8(3), 627–641. https://doi.org/10.1109/tetc.2017.2771441","ama":"Sadeghi-Kohan S, Kamal M, Navabi Z. Self-Adjusting Monitor for Measuring Aging Rate and Advancement. IEEE Transactions on Emerging Topics in Computing. 2017;8(3):627-641. doi:10.1109/tetc.2017.2771441","chicago":"Sadeghi-Kohan, Somayeh, Mehdi Kamal, and Zainalabedin Navabi. “Self-Adjusting Monitor for Measuring Aging Rate and Advancement.” IEEE Transactions on Emerging Topics in Computing 8, no. 3 (2017): 627–41. https://doi.org/10.1109/tetc.2017.2771441."},"type":"journal_article","user_id":"78614","extern":"1","abstract":[{"lang":"eng","text":"Time-variant age information of different parts of a system can be used for system-level performance improvement through high-level task scheduling, thus extending the life-time of the system. Progressive age information should provide the age state that the system is in, and the rate that it is being aged at. In this paper, we propose a structure that monitors certain paths of a circuit and detects its gradual age growth, and provides the aging rate and aging state of the circuit. The proposed monitors are placed on a selected set of nodes that represent a timing bottleneck of the system. These monitors sample expected data on these nodes, and compare them with the expected values. The timing of sampling changes as the circuit ages and its delay increases. The timing of sampling will provide a measure of aging advancement of a circuit. To assess the efficacy of the proposed method and compare it with other state-of-the-art aging monitors, we use them on selected nodes of the execution unit of different processors, as well as some circuits from ITC99 benchmarks. The results reveal that the precision of our proposed method is between 0.12 (ns) to 0.401 (ns). Its Area and power overhead are negligible and are about 2.13 and 0.69 percent respectively."}],"volume":8,"date_created":"2022-01-19T13:45:51Z","status":"public","publication":"IEEE Transactions on Emerging Topics in Computing","keyword":["Age advancement","age monitoring clock","aging rate","self-adjusting monitors"],"author":[{"id":"78614","last_name":"Sadeghi-Kohan","orcid":"https://orcid.org/0000-0001-7246-0610","full_name":"Sadeghi-Kohan, Somayeh","first_name":"Somayeh"},{"first_name":"Mehdi","full_name":"Kamal, Mehdi","last_name":"Kamal"},{"first_name":"Zainalabedin","full_name":"Navabi, Zainalabedin","last_name":"Navabi"}],"publisher":"Institute of Electrical and Electronics Engineers (IEEE)","doi":"10.1109/tetc.2017.2771441","date_updated":"2023-08-02T11:36:30Z","language":[{"iso":"eng"}],"title":"Self-Adjusting Monitor for Measuring Aging Rate and Advancement","publication_identifier":{"issn":["2168-6750","2376-4562"]},"publication_status":"published","department":[{"_id":"48"}]},{"department":[{"_id":"819"}],"publication_status":"published","publication_identifier":{"isbn":["978-1-4503-4939-0"]},"place":"New York, NY, USA","title":"Ecr 2.0: A Modular Framework for Evolutionary Computation in R","series_title":"GECCO ’17","language":[{"iso":"eng"}],"date_updated":"2023-12-13T10:45:05Z","doi":"10.1145/3067695.3082470","author":[{"id":"102979","last_name":"Bossek","orcid":"0000-0002-4121-4668","full_name":"Bossek, Jakob","first_name":"Jakob"}],"publisher":"Association for Computing Machinery","keyword":["evolutionary optimization","software-tools"],"publication":"Proceedings of the Genetic and Evolutionary Computation Conference Companion","status":"public","date_created":"2023-11-14T15:58:55Z","abstract":[{"lang":"eng","text":"The novel R package ecr (version 2), short for Evolutionary Computation in R, provides a comprehensive collection of building blocks for constructing powerful evolutionary algorithms for single- and multi-objective continuous and combinatorial optimization problems. It allows to solve standard optimization tasks with few lines of code using a black-box approach. Moreover, rapid prototyping of non-standard ideas is possible via an explicit, white-box approach. This paper describes the design principles of the package and gives some introductory examples on how to use the package in practise."}],"extern":"1","user_id":"102979","citation":{"ieee":"J. Bossek, “Ecr 2.0: A Modular Framework for Evolutionary Computation in R,” in Proceedings of the Genetic and Evolutionary Computation Conference Companion, 2017, pp. 1187–1193, doi: 10.1145/3067695.3082470.","short":"J. Bossek, in: Proceedings of the Genetic and Evolutionary Computation Conference Companion, Association for Computing Machinery, New York, NY, USA, 2017, pp. 1187–1193.","bibtex":"@inproceedings{Bossek_2017, place={New York, NY, USA}, series={GECCO ’17}, title={Ecr 2.0: A Modular Framework for Evolutionary Computation in R}, DOI={10.1145/3067695.3082470}, booktitle={Proceedings of the Genetic and Evolutionary Computation Conference Companion}, publisher={Association for Computing Machinery}, author={Bossek, Jakob}, year={2017}, pages={1187–1193}, collection={GECCO ’17} }","mla":"Bossek, Jakob. “Ecr 2.0: A Modular Framework for Evolutionary Computation in R.” Proceedings of the Genetic and Evolutionary Computation Conference Companion, Association for Computing Machinery, 2017, pp. 1187–1193, doi:10.1145/3067695.3082470.","ama":"Bossek J. Ecr 2.0: A Modular Framework for Evolutionary Computation in R. In: Proceedings of the Genetic and Evolutionary Computation Conference Companion. GECCO ’17. Association for Computing Machinery; 2017:1187–1193. doi:10.1145/3067695.3082470","apa":"Bossek, J. (2017). Ecr 2.0: A Modular Framework for Evolutionary Computation in R. Proceedings of the Genetic and Evolutionary Computation Conference Companion, 1187–1193. https://doi.org/10.1145/3067695.3082470","chicago":"Bossek, Jakob. “Ecr 2.0: A Modular Framework for Evolutionary Computation in R.” In Proceedings of the Genetic and Evolutionary Computation Conference Companion, 1187–1193. GECCO ’17. New York, NY, USA: Association for Computing Machinery, 2017. https://doi.org/10.1145/3067695.3082470."},"year":"2017","type":"conference","page":"1187–1193","_id":"48863"},{"extern":"1","abstract":[{"text":"While finding minimum-cost spanning trees (MST) in undirected graphs is solvable in polynomial time, the multi-criteria minimum spanning tree problem (mcMST) is NP-hard. Interestingly, the mcMST problem has not been in focus of evolutionary computation research for a long period of time, although, its relevance for real world problems is easy to see. The available and most notable approaches by Zhou and Gen as well as by Knowles and Corne concentrate on solution encoding and on fairly dated selection mechanisms. In this work, we revisit the mcMST and focus on the mutation operators as exploratory components of evolutionary algorithms neglected so far. We investigate optimal solution characteristics to discuss current mutation strategies, identify shortcomings of these operators, and propose a sub-tree based operator which offers what we term Pareto-beneficial behavior: ensuring convergence and diversity at the same time. The operator is empirically evaluated inside modern standard evolutionary meta-heuristics for multi-criteria optimization and compared to hitherto applied mutation operators in the context of mcMST.","lang":"eng"}],"title":"A Pareto-Beneficial Sub-Tree Mutation for the Multi-Criteria Minimum Spanning Tree Problem","user_id":"102979","author":[{"first_name":"Jakob","full_name":"Bossek, Jakob","orcid":"0000-0002-4121-4668","last_name":"Bossek","id":"102979"},{"last_name":"Grimme","first_name":"Christian","full_name":"Grimme, Christian"}],"department":[{"_id":"819"}],"publication":"2017 IEEE Symposium Series on Computational Intelligence (SSCI)","keyword":["Convergence","Encoding","Euclidean distance","Evolutionary computation","Heating systems","Optimization","Standards"],"publication_status":"published","status":"public","date_created":"2023-11-14T15:58:54Z","_id":"48857","date_updated":"2023-12-13T10:44:28Z","doi":"10.1109/SSCI.2017.8285183","citation":{"apa":"Bossek, J., & Grimme, C. (2017). A Pareto-Beneficial Sub-Tree Mutation for the Multi-Criteria Minimum Spanning Tree Problem. 2017 IEEE Symposium Series on Computational Intelligence (SSCI), 1–8. https://doi.org/10.1109/SSCI.2017.8285183","ama":"Bossek J, Grimme C. A Pareto-Beneficial Sub-Tree Mutation for the Multi-Criteria Minimum Spanning Tree Problem. In: 2017 IEEE Symposium Series on Computational Intelligence (SSCI). ; 2017:1–8. doi:10.1109/SSCI.2017.8285183","chicago":"Bossek, Jakob, and Christian Grimme. “A Pareto-Beneficial Sub-Tree Mutation for the Multi-Criteria Minimum Spanning Tree Problem.” In 2017 IEEE Symposium Series on Computational Intelligence (SSCI), 1–8, 2017. https://doi.org/10.1109/SSCI.2017.8285183.","mla":"Bossek, Jakob, and Christian Grimme. “A Pareto-Beneficial Sub-Tree Mutation for the Multi-Criteria Minimum Spanning Tree Problem.” 2017 IEEE Symposium Series on Computational Intelligence (SSCI), 2017, pp. 1–8, doi:10.1109/SSCI.2017.8285183.","bibtex":"@inproceedings{Bossek_Grimme_2017, title={A Pareto-Beneficial Sub-Tree Mutation for the Multi-Criteria Minimum Spanning Tree Problem}, DOI={10.1109/SSCI.2017.8285183}, booktitle={2017 IEEE Symposium Series on Computational Intelligence (SSCI)}, author={Bossek, Jakob and Grimme, Christian}, year={2017}, pages={1–8} }","short":"J. Bossek, C. Grimme, in: 2017 IEEE Symposium Series on Computational Intelligence (SSCI), 2017, pp. 1–8.","ieee":"J. Bossek and C. Grimme, “A Pareto-Beneficial Sub-Tree Mutation for the Multi-Criteria Minimum Spanning Tree Problem,” in 2017 IEEE Symposium Series on Computational Intelligence (SSCI), 2017, pp. 1–8, doi: 10.1109/SSCI.2017.8285183."},"type":"conference","year":"2017","page":"1–8","language":[{"iso":"eng"}]},{"author":[{"first_name":"Tobias","full_name":"Meyer , Tobias","last_name":"Meyer "},{"full_name":"Unger, Andreas","first_name":"Andreas","last_name":"Unger"},{"last_name":"Althoff","full_name":"Althoff, Simon","first_name":"Simon"},{"full_name":"Sextro, Walter","first_name":"Walter","id":"21220","last_name":"Sextro"},{"last_name":"Brökelmann","full_name":"Brökelmann, Michael","first_name":"Michael"},{"first_name":"Matthias","full_name":"Hunstig, Matthias","last_name":"Hunstig"},{"last_name":"Guth","first_name":"Karsten","full_name":"Guth, Karsten"}],"quality_controlled":"1","keyword":["Self-optimization","adaptive system","bond process","copper wire"],"publication":"IEEE 66th Electronic Components and Technology Conference","department":[{"_id":"151"}],"status":"public","date_created":"2019-05-27T09:17:26Z","project":[{"grant_number":"02 PQ2210","name":"Intelligente Herstellung zuverlässiger Kupferbondverbindungen","_id":"92"}],"abstract":[{"lang":"eng","text":"Usage of copper wire bonds allows to push power boundaries imposed by aluminum wire bonds. Copper allows higher electrical, thermal and mechanical loads than aluminum, which currently is the most commonly used material in heavy wire bonding. This is the main driving factor for increased usage of copper in high power applications such as wind turbines, locomotives or electric vehicles. At the same time, usage of copper also increases tool wear and reduces the range of parameter values for a stable process, making the process more challenging. To overcome these drawbacks, parameter adaptation at runtime using self-optimization is desired. A self-optimizing system is based on system objectives that evaluate and quantify system performance. System parameters can be changed at runtime such that pre-selected objective values are reached. For adaptation of bond process parameters, model-based self-optimization is employed. Since it is based on a model of the system, the bond process was modeled. In addition to static model parameters such as wire and substrate material properties and vibration characteristics of transducer and tool, variable model inputs are process parameters. Main simulation result is bonded area in the wiresubstrate contact. This model is then used to find valid and optimal working points before operation. The working point is composed of normal force and ultrasonic voltage trajectories, which are usually determined experimentally. Instead, multiobjective optimalization is used to compute trajectories that simultaneously optimize bond quality, process duration, tool wear and probability of tool-substrate contacts. The values of these objectives are computed using the process model. At runtime, selection among pre-determined optimal working points is sufficient to prioritize individual objectives. This way, the computationally expensive process of numerically solving a multiobjective optimal control problem and the demanding high speed bonding process are separated. To evaluate to what extent the pre-defined goals of self-optimization are met, an offthe- shelf heavy wire bonding machine was modified to allow for parameter adaptation and for transmitting of measurement data at runtime. This data is received by an external computer system and evaluated to select a new working point. Then, new process parameters are sent to the modified bonding machine for use for subsequent bonds. With these components, a full self-optimizing system has been implemented."}],"user_id":"210","title":"Reliable Manufacturing of Heavy Copper Wire Bonds Using Online Parameter Adaptation","language":[{"iso":"eng"}],"citation":{"apa":"Meyer , T., Unger, A., Althoff, S., Sextro, W., Brökelmann, M., Hunstig, M., & Guth, K. (2016). Reliable Manufacturing of Heavy Copper Wire Bonds Using Online Parameter Adaptation. In IEEE 66th Electronic Components and Technology Conference (pp. 622–628). https://doi.org/10.1109/ECTC.2016.215","ama":"Meyer T, Unger A, Althoff S, et al. Reliable Manufacturing of Heavy Copper Wire Bonds Using Online Parameter Adaptation. In: IEEE 66th Electronic Components and Technology Conference. ; 2016:622-628. doi:10.1109/ECTC.2016.215","chicago":"Meyer , Tobias, Andreas Unger, Simon Althoff, Walter Sextro, Michael Brökelmann, Matthias Hunstig, and Karsten Guth. “Reliable Manufacturing of Heavy Copper Wire Bonds Using Online Parameter Adaptation.” In IEEE 66th Electronic Components and Technology Conference, 622–28, 2016. https://doi.org/10.1109/ECTC.2016.215.","mla":"Meyer , Tobias, et al. “Reliable Manufacturing of Heavy Copper Wire Bonds Using Online Parameter Adaptation.” IEEE 66th Electronic Components and Technology Conference, 2016, pp. 622–28, doi:10.1109/ECTC.2016.215.","bibtex":"@inproceedings{Meyer _Unger_Althoff_Sextro_Brökelmann_Hunstig_Guth_2016, title={Reliable Manufacturing of Heavy Copper Wire Bonds Using Online Parameter Adaptation}, DOI={10.1109/ECTC.2016.215}, booktitle={IEEE 66th Electronic Components and Technology Conference}, author={Meyer , Tobias and Unger, Andreas and Althoff, Simon and Sextro, Walter and Brökelmann, Michael and Hunstig, Matthias and Guth, Karsten}, year={2016}, pages={622–628} }","short":"T. Meyer , A. Unger, S. Althoff, W. Sextro, M. Brökelmann, M. Hunstig, K. Guth, in: IEEE 66th Electronic Components and Technology Conference, 2016, pp. 622–628.","ieee":"T. Meyer et al., “Reliable Manufacturing of Heavy Copper Wire Bonds Using Online Parameter Adaptation,” in IEEE 66th Electronic Components and Technology Conference, 2016, pp. 622–628."},"year":"2016","type":"conference","page":"622-628","date_updated":"2020-05-07T05:33:53Z","_id":"9966","doi":"10.1109/ECTC.2016.215"},{"series_title":"AI*IA 2016","language":[{"iso":"eng"}],"date_updated":"2023-12-13T10:47:11Z","doi":"10.1007/978-3-319-49130-1_1","publication_status":"published","publication_identifier":{"isbn":["978-3-319-49129-5"]},"place":"Berlin, Heidelberg","title":"Understanding Characteristics of Evolved Instances for State-of-the-Art Inexact TSP Solvers with Maximum Performance Difference","page":"3–12","citation":{"short":"J. Bossek, H. Trautmann, in: Proceedings of the XV International Conference of the Italian Association for Artificial Intelligence on Advances in Artificial Intelligence - Volume 10037, Springer-Verlag, Berlin, Heidelberg, 2016, pp. 3–12.","ieee":"J. Bossek and H. Trautmann, “Understanding Characteristics of Evolved Instances for State-of-the-Art Inexact TSP Solvers with Maximum Performance Difference,” in Proceedings of the XV International Conference of the Italian Association for Artificial Intelligence on Advances in Artificial Intelligence - Volume 10037, 2016, pp. 3–12, doi: 10.1007/978-3-319-49130-1_1.","chicago":"Bossek, Jakob, and Heike Trautmann. “Understanding Characteristics of Evolved Instances for State-of-the-Art Inexact TSP Solvers with Maximum Performance Difference.” In Proceedings of the XV International Conference of the Italian Association for Artificial Intelligence on Advances in Artificial Intelligence - Volume 10037, 3–12. AI*IA 2016. Berlin, Heidelberg: Springer-Verlag, 2016. https://doi.org/10.1007/978-3-319-49130-1_1.","apa":"Bossek, J., & Trautmann, H. (2016). Understanding Characteristics of Evolved Instances for State-of-the-Art Inexact TSP Solvers with Maximum Performance Difference. Proceedings of the XV International Conference of the Italian Association for Artificial Intelligence on Advances in Artificial Intelligence - Volume 10037, 3–12. https://doi.org/10.1007/978-3-319-49130-1_1","ama":"Bossek J, Trautmann H. Understanding Characteristics of Evolved Instances for State-of-the-Art Inexact TSP Solvers with Maximum Performance Difference. In: Proceedings of the XV International Conference of the Italian Association for Artificial Intelligence on Advances in Artificial Intelligence - Volume 10037. AI*IA 2016. Springer-Verlag; 2016:3–12. doi:10.1007/978-3-319-49130-1_1","mla":"Bossek, Jakob, and Heike Trautmann. “Understanding Characteristics of Evolved Instances for State-of-the-Art Inexact TSP Solvers with Maximum Performance Difference.” Proceedings of the XV International Conference of the Italian Association for Artificial Intelligence on Advances in Artificial Intelligence - Volume 10037, Springer-Verlag, 2016, pp. 3–12, doi:10.1007/978-3-319-49130-1_1.","bibtex":"@inproceedings{Bossek_Trautmann_2016, place={Berlin, Heidelberg}, series={AI*IA 2016}, title={Understanding Characteristics of Evolved Instances for State-of-the-Art Inexact TSP Solvers with Maximum Performance Difference}, DOI={10.1007/978-3-319-49130-1_1}, booktitle={Proceedings of the XV International Conference of the Italian Association for Artificial Intelligence on Advances in Artificial Intelligence - Volume 10037}, publisher={Springer-Verlag}, author={Bossek, Jakob and Trautmann, Heike}, year={2016}, pages={3–12}, collection={AI*IA 2016} }"},"type":"conference","year":"2016","_id":"48874","publication":"Proceedings of the XV International Conference of the Italian Association for Artificial Intelligence on Advances in Artificial Intelligence - Volume 10037","keyword":["Combinatorial optimization","Instance hardness","Metaheuristics","Transportation","TSP"],"publisher":"Springer-Verlag","author":[{"first_name":"Jakob","full_name":"Bossek, Jakob","orcid":"0000-0002-4121-4668","last_name":"Bossek","id":"102979"},{"last_name":"Trautmann","full_name":"Trautmann, Heike","first_name":"Heike"}],"date_created":"2023-11-14T15:58:57Z","status":"public","abstract":[{"lang":"eng","text":"State of the Art inexact solvers of the NP-hard Traveling Salesperson Problem TSP are known to mostly yield high-quality solutions in reasonable computation times. With the purpose of understanding different levels of instance difficulties, instances for the current State of the Art heuristic TSP solvers LKH+restart and EAX+restart are presented which are evolved using a sophisticated evolutionary algorithm. More specifically, the performance differences of the respective solvers are maximized resulting in instances which are easier to solve for one solver and much more difficult for the other. Focusing on both optimization directions, instance features are identified which characterize both types of instances and increase the understanding of solver performance differences."}],"extern":"1","user_id":"102979"},{"issue":"7","_id":"1772","intvolume":" 48","page":"18-20","type":"journal_article","year":"2015","citation":{"ieee":"J. Torresen, C. Plessl, and X. Yao, “Self-Aware and Self-Expressive Systems – Guest Editor’s Introduction,” IEEE Computer, vol. 48, no. 7, pp. 18–20, 2015.","short":"J. Torresen, C. Plessl, X. Yao, IEEE Computer 48 (2015) 18–20.","mla":"Torresen, Jim, et al. “Self-Aware and Self-Expressive Systems – Guest Editor’s Introduction.” IEEE Computer, vol. 48, no. 7, IEEE Computer Society, 2015, pp. 18–20, doi:10.1109/MC.2015.205.","bibtex":"@article{Torresen_Plessl_Yao_2015, title={Self-Aware and Self-Expressive Systems – Guest Editor’s Introduction}, volume={48}, DOI={10.1109/MC.2015.205}, number={7}, journal={IEEE Computer}, publisher={IEEE Computer Society}, author={Torresen, Jim and Plessl, Christian and Yao, Xin}, year={2015}, pages={18–20} }","chicago":"Torresen, Jim, Christian Plessl, and Xin Yao. “Self-Aware and Self-Expressive Systems – Guest Editor’s Introduction.” IEEE Computer 48, no. 7 (2015): 18–20. https://doi.org/10.1109/MC.2015.205.","apa":"Torresen, J., Plessl, C., & Yao, X. (2015). Self-Aware and Self-Expressive Systems – Guest Editor’s Introduction. IEEE Computer, 48(7), 18–20. https://doi.org/10.1109/MC.2015.205","ama":"Torresen J, Plessl C, Yao X. Self-Aware and Self-Expressive Systems – Guest Editor’s Introduction. IEEE Computer. 2015;48(7):18-20. doi:10.1109/MC.2015.205"},"user_id":"16153","ddc":["000"],"date_created":"2018-03-23T14:06:12Z","has_accepted_license":"1","status":"public","volume":48,"file":[{"success":1,"relation":"main_file","content_type":"application/pdf","date_updated":"2018-11-02T15:47:45Z","file_id":"5313","creator":"ups","file_size":5605009,"access_level":"closed","date_created":"2018-11-02T15:47:45Z","file_name":"07163237.pdf"}],"publication":"IEEE Computer","file_date_updated":"2018-11-02T15:47:45Z","keyword":["self-awareness","self-expression"],"author":[{"last_name":"Torresen","full_name":"Torresen, Jim","first_name":"Jim"},{"id":"16153","last_name":"Plessl","full_name":"Plessl, Christian","orcid":"0000-0001-5728-9982","first_name":"Christian"},{"last_name":"Yao","full_name":"Yao, Xin","first_name":"Xin"}],"publisher":"IEEE Computer Society","doi":"10.1109/MC.2015.205","date_updated":"2022-01-06T06:53:19Z","language":[{"iso":"eng"}],"title":"Self-Aware and Self-Expressive Systems – Guest Editor's Introduction","project":[{"_id":"1","name":"SFB 901"},{"_id":"4","name":"SFB 901 - Project Area C"},{"_id":"14","name":"SFB 901 - Subproject C2"},{"grant_number":"610996","name":"Self-Adaptive Virtualisation-Aware High-Performance/Low-Energy Heterogeneous System Architectures","_id":"34"}],"department":[{"_id":"27"},{"_id":"518"},{"_id":"78"}]},{"_id":"5704","intvolume":" 39","issue":"1","year":"2015","citation":{"ieee":"A. Scherer, N. Wünderlich, and F. Von Wangenheim, “The Value of Self-Service: Long-Term Effects of Technology-Based Self-Service Usage on Customer Retention.,” MIS Quarterly, vol. 39, no. 1, pp. 177–200, 2015.","short":"A. Scherer, N. Wünderlich, F. Von Wangenheim, MIS Quarterly 39 (2015) 177–200.","bibtex":"@article{Scherer_Wünderlich_Von Wangenheim_2015, title={The Value of Self-Service: Long-Term Effects of Technology-Based Self-Service Usage on Customer Retention.}, volume={39}, number={1}, journal={MIS Quarterly}, publisher={MIS RC}, author={Scherer, Anne and Wünderlich, Nancy and Von Wangenheim, Florian}, year={2015}, pages={177–200} }","mla":"Scherer, Anne, et al. “The Value of Self-Service: Long-Term Effects of Technology-Based Self-Service Usage on Customer Retention.” MIS Quarterly, vol. 39, no. 1, MIS RC, 2015, pp. 177–200.","chicago":"Scherer, Anne, Nancy Wünderlich, and Florian Von Wangenheim. “The Value of Self-Service: Long-Term Effects of Technology-Based Self-Service Usage on Customer Retention.” MIS Quarterly 39, no. 1 (2015): 177–200.","ama":"Scherer A, Wünderlich N, Von Wangenheim F. The Value of Self-Service: Long-Term Effects of Technology-Based Self-Service Usage on Customer Retention. MIS Quarterly. 2015;39(1):177-200.","apa":"Scherer, A., Wünderlich, N., & Von Wangenheim, F. (2015). The Value of Self-Service: Long-Term Effects of Technology-Based Self-Service Usage on Customer Retention. MIS Quarterly, 39(1), 177–200."},"type":"journal_article","page":"177-200","article_type":"original","abstract":[{"text":"Advancements in information technology have changed the way customers experience a service encounter and their relationship with service providers. Especially technology-based self-service channels have found their way into the 21st century service economy. While research embraces these channels for their cost-efficiency, it has not examined whether a shift from personal to self-service affects customer–firm relationships. Drawing from the service-dominant logic and its central concept of value-in-context, we discuss customers’ value creation in self-service and personal service channels and examine the long-term impact of these channels on customer retention. Using longitudinal customer data, we investigate how the ratio of self-service versus personal service use influences customer defection over time. Our findings suggest that the ratio of self-service to personal service used affects customer defection in a U-shaped manner, with intermediate levels of both self-service and personal service use being associated with the lowest likelihood of defection. We also find that this effect mitigates over time. We conclude that firms should not shift customers toward self-service channels completely, especially not at the beginning of a relationship. Our study underlines the importance of understanding when and how self-service technologies create valuable customer experiences and stresses the notion of actively managing customers’ cocreation of value. ","lang":"eng"}],"user_id":"37741","author":[{"full_name":"Scherer, Anne","first_name":"Anne","last_name":"Scherer"},{"full_name":"Wünderlich, Nancy","first_name":"Nancy","id":"36392","last_name":"Wünderlich"},{"last_name":"Von Wangenheim","full_name":"Von Wangenheim, Florian","first_name":"Florian"}],"publisher":"MIS RC","keyword":["customer defection","customer retention","e-service","longitudinal","Self-service","value-in-context"],"publication":"MIS Quarterly","status":"public","date_created":"2018-11-15T11:36:38Z","volume":39,"date_updated":"2022-01-06T07:02:36Z","language":[{"iso":"eng"}],"title":"The Value of Self-Service: Long-Term Effects of Technology-Based Self-Service Usage on Customer Retention.","department":[{"_id":"181"}],"publication_identifier":{"issn":["0276-7783."]},"publication_status":"published"},{"year":"2015","citation":{"ieee":"T. Brahm, D. Wagner, and T. Jenert, “A person-centred approach to students’ transition into Higher Education,” presented at the 16th Biennial EARLI Conference for Research on Learning and Instruction, Zypern, 2015.","short":"T. Brahm, D. Wagner, T. Jenert, in: 2015.","bibtex":"@inproceedings{Brahm_Wagner_Jenert_2015, title={A person-centred approach to students’ transition into Higher Education}, author={Brahm, Taiga and Wagner, Dietrich and Jenert, Tobias}, year={2015} }","mla":"Brahm, Taiga, et al. A Person-Centred Approach to Students’ Transition into Higher Education. 2015.","apa":"Brahm, T., Wagner, D., & Jenert, T. (2015). A person-centred approach to students’ transition into Higher Education. Presented at the 16th Biennial EARLI Conference for Research on Learning and Instruction, Zypern.","ama":"Brahm T, Wagner D, Jenert T. A person-centred approach to students’ transition into Higher Education. In: ; 2015.","chicago":"Brahm, Taiga, Dietrich Wagner, and Tobias Jenert. “A Person-Centred Approach to Students’ Transition into Higher Education,” 2015."},"type":"conference","_id":"4464","date_updated":"2022-01-06T07:01:05Z","conference":{"location":"Zypern","start_date":"2015-08-25","name":"16th Biennial EARLI Conference for Research on Learning and Instruction","end_date":"2015-08-29"},"status":"public","date_created":"2018-09-18T12:56:31Z","author":[{"last_name":"Brahm","full_name":"Brahm, Taiga","first_name":"Taiga"},{"full_name":"Wagner, Dietrich","first_name":"Dietrich","last_name":"Wagner"},{"id":"71994","last_name":"Jenert","orcid":" https://orcid.org/0000-0001-9262-5646","full_name":"Jenert, Tobias","first_name":"Tobias"}],"department":[{"_id":"208"},{"_id":"282"}],"keyword":["Quantitative methods","Self-efficacy","Higher education","Motivation and Emotion"],"user_id":"51057","title":"A person-centred approach to students' transition into Higher Education","abstract":[{"lang":"eng","text":"A highly selective first study phase in many Swiss study programs leads to a rather competitive climate among students. However, the atmosphere at the university is an important factor for students' transition into Higher Education. An important question in this context is whether students' are equipped with different dispositions influencing how they cope with this transition. Other research has already shown that different groups of students can be identified regarding their student behavior. Yet, so far little is known about patterns of variables characterizing students, transitioning successfully. The paper takes advantage of a person-centered approach, i.e. the latent-class analysis, which makes it possible to identify groups of individuals, sharing common attributes. The research was conducted as a longitudinal study during their first year at a Swiss university. The return rate was about 67%, with 820 utilizable questionnaires at t1. Based on the analysis of students' anxiety, intrinsic motivation and self-efficacy, three distinct classes of students could be identified. The first class can be called the \"highly motivated and self-confident\" students. The second class is characterized by the same pattern, however, on a more intermediate level and the last class can be described as the \"least motivated and most anxious\" group of students. This study contributes to research and theory on students' transition into higher education and could be a first hint that students' experiences of this transition can vary substantially."}],"extern":"1"},{"year":"2015","citation":{"ama":"Bornmann P, Hemsel T, Sextro W, Memoli G, Hodnett M, Zeqiri B. Kavitationsdetektion mittels Self-Sensing-Ultraschallwandler. tm - Technisches Messen. 2015;82(2):73-84. doi:10.1515/teme-2015-0017","apa":"Bornmann, P., Hemsel, T., Sextro, W., Memoli, G., Hodnett, M., & Zeqiri, B. (2015). Kavitationsdetektion mittels Self-Sensing-Ultraschallwandler. Tm - Technisches Messen, 82(2), 73–84. https://doi.org/10.1515/teme-2015-0017","chicago":"Bornmann, Peter, Tobias Hemsel, Walter Sextro, Gianluca Memoli, Mark Hodnett, and Bajram Zeqiri. “Kavitationsdetektion Mittels Self-Sensing-Ultraschallwandler.” Tm - Technisches Messen 82, no. 2 (2015): 73–84. https://doi.org/10.1515/teme-2015-0017.","mla":"Bornmann, Peter, et al. “Kavitationsdetektion Mittels Self-Sensing-Ultraschallwandler.” Tm - Technisches Messen, vol. 82, no. 2, 2015, pp. 73–84, doi:10.1515/teme-2015-0017.","bibtex":"@article{Bornmann_Hemsel_Sextro_Memoli_Hodnett_Zeqiri_2015, title={Kavitationsdetektion mittels Self-Sensing-Ultraschallwandler}, volume={82}, DOI={10.1515/teme-2015-0017}, number={2}, journal={tm - Technisches Messen}, author={Bornmann, Peter and Hemsel, Tobias and Sextro, Walter and Memoli, Gianluca and Hodnett, Mark and Zeqiri, Bajram}, year={2015}, pages={73–84} }","short":"P. Bornmann, T. Hemsel, W. Sextro, G. Memoli, M. Hodnett, B. Zeqiri, Tm - Technisches Messen 82 (2015) 73–84.","ieee":"P. Bornmann, T. Hemsel, W. Sextro, G. Memoli, M. Hodnett, and B. Zeqiri, “Kavitationsdetektion mittels Self-Sensing-Ultraschallwandler,” tm - Technisches Messen, vol. 82, no. 2, pp. 73–84, 2015."},"type":"journal_article","page":"73-84","_id":"9944","intvolume":" 82","issue":"2","author":[{"last_name":"Bornmann","full_name":"Bornmann, Peter","first_name":"Peter"},{"last_name":"Hemsel","id":"210","first_name":"Tobias","full_name":"Hemsel, Tobias"},{"full_name":"Sextro, Walter","first_name":"Walter","id":"21220","last_name":"Sextro"},{"first_name":"Gianluca","full_name":"Memoli, Gianluca","last_name":"Memoli"},{"first_name":"Mark","full_name":"Hodnett, Mark","last_name":"Hodnett"},{"full_name":"Zeqiri, Bajram","first_name":"Bajram","last_name":"Zeqiri"}],"keyword":["Kavitationsdetektion","Self-Sensing","So- nochemie","Ultraschallwandler"],"publication":"tm - Technisches Messen","volume":82,"status":"public","date_created":"2019-05-27T08:13:40Z","abstract":[{"lang":"eng","text":"Eine Vielzahl von Prozessen in der Chemie und Verfahrenstechnik kann durch Ultraschall positiv beeinflusst werden. Oftmals ist ultraschallinduzierte Kavitation der Hauptwirkmechanismus für die positiven Effekte der Beschallung. Daher ist es notwendig die Kavitationsaktivität während des Prozesses zu quantifizieren um die Beschallung für den jeweiligen Prozess optimal gestalten und überwachen zu können. Eine Möglichkeit der prozessbegleitenden Kavitationsdetektion ist die Auswertung der akustischen Emissionen von oszillierenden und kollabierenden Kavitationsblasen mittels Drucksensoren in der Flüssigkeit. Raue Prozessrandbedingungen wie hohe Temperaturen oder aggressive Flüssigkeiten erschweren es jedoch geeignete Sensoren zu finden. Als Alternative wurde daher die Nutzbarkeit der Rückwirkung von Kavitationsereignissen auf das elektrische Eingansgssignal des Ultraschallwandlers zur Quantifizierung von Kavitation untersucht. Die experimentelle Analyse hat ergeben, dass das Einsetzen und in einigen Fällen auch die Art der Kavitation auf Basis der Rückwirkung auf das Stromsignal des Ultraschallwandlers bestimmt werden kann. Die Stärke der Kavitation war hingegen nicht aus den Stromsignalen abzuleiten."}],"user_id":"55222","language":[{"iso":"eng"}],"date_updated":"2019-09-16T10:44:38Z","doi":"10.1515/teme-2015-0017","department":[{"_id":"151"}],"title":"Kavitationsdetektion mittels Self-Sensing-Ultraschallwandler","popular_science":"1"},{"page":"940-945","year":"2015","type":"conference","citation":{"short":"T. Meyer, T. Kaul, W. Sextro, in: Proceedings of the 9th IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes, 2015, pp. 940–945.","ieee":"T. Meyer, T. Kaul, and W. Sextro, “Advantages of reliability-adaptive system operation for maintenance planning,” in Proceedings of the 9th IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes, 2015, pp. 940–945.","ama":"Meyer T, Kaul T, Sextro W. Advantages of reliability-adaptive system operation for maintenance planning. In: Proceedings of the 9th IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes. ; 2015:940-945. doi:10.1016/j.ifacol.2015.09.647","apa":"Meyer, T., Kaul, T., & Sextro, W. (2015). Advantages of reliability-adaptive system operation for maintenance planning. In Proceedings of the 9th IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes (pp. 940–945). https://doi.org/10.1016/j.ifacol.2015.09.647","chicago":"Meyer, Tobias, Thorben Kaul, and Walter Sextro. “Advantages of Reliability-Adaptive System Operation for Maintenance Planning.” In Proceedings of the 9th IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes, 940–45, 2015. https://doi.org/10.1016/j.ifacol.2015.09.647.","mla":"Meyer, Tobias, et al. “Advantages of Reliability-Adaptive System Operation for Maintenance Planning.” Proceedings of the 9th IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes, 2015, pp. 940–45, doi:10.1016/j.ifacol.2015.09.647.","bibtex":"@inproceedings{Meyer_Kaul_Sextro_2015, title={Advantages of reliability-adaptive system operation for maintenance planning}, DOI={10.1016/j.ifacol.2015.09.647}, booktitle={Proceedings of the 9th IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes}, author={Meyer, Tobias and Kaul, Thorben and Sextro, Walter}, year={2015}, pages={940–945} }"},"language":[{"iso":"eng"}],"doi":"10.1016/j.ifacol.2015.09.647","_id":"9949","date_updated":"2019-09-16T10:43:42Z","date_created":"2019-05-27T08:29:40Z","status":"public","publication":"Proceedings of the 9th IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes","department":[{"_id":"151"}],"keyword":["Adaptive systems","Reliability analysis","Availability","Adaptive control","Maintenance","Self-optimizing systems","Self-optimizing control","Stochastic Petri-nets"],"author":[{"last_name":"Meyer","first_name":"Tobias","full_name":"Meyer, Tobias"},{"id":"14802","last_name":"Kaul","full_name":"Kaul, Thorben","first_name":"Thorben"},{"full_name":"Sextro, Walter","first_name":"Walter","id":"21220","last_name":"Sextro"}],"quality_controlled":"1","title":"Advantages of reliability-adaptive system operation for maintenance planning","user_id":"55222","abstract":[{"text":"Intelligent mechatronic systems other the possibility to adapt system behavior to current dependability. This can be used to assure reliability by controlling system behavior to reach a pre-defined lifetime. By using such closed loop control, the margin of error of useful lifetime of an individual system is lowered. It is also possible to change the pre-defined lifetime during operation, by adapting system behavior to derate component usage. When planning maintenance actions, the remaining useful lifetime of each individual system has to be taken into account. Usually, stochastic properties of a fleet of systems are analyzed to create maintenance plans. Among these, the main factor is the probability of an individual system to last until maintenance. If condition-based maintenance is used, this is updated for each individual system using available information about its current state. By lowering the margin of error of useful lifetime, which directly corresponds to the time until maintenance, extended maintenance periods are made possible. Also using reliability-adaptive operation, a reversal of degradation driven maintenance planning is possible where a maintenance plan is setup not only according to system properties, but mainly to requirements imposed by maintenance personnel or infrastructure. Each system then adapts its behavior accordingly and fails according to the maintenance plan, making better use of maintenance personnel and system capabilities at the same time. In this contribution, the potential of maintenance plan driven system behavior adaptation is shown. A model including adaptation process and maintenance actions is simulated over full system lifetime to assess the advantages gained.","lang":"eng"}]},{"project":[{"_id":"31","name":"Engineering Proprioception in Computing Systems","grant_number":"257906"}],"date_created":"2019-07-10T11:18:00Z","status":"public","keyword":["cache storage","field programmable gate arrays","multiprocessing systems","parallel architectures","reconfigurable architectures","FPGA","dynamic reconfiguration","evolvable cache mapping","many-core architecture","memory-to-cache address mapping function","microarchitectural optimization","multicore architecture","nature-inspired optimization","parallelization degrees","processor","reconfigurable cache mapping","reconfigurable computing","Field programmable gate arrays","Software","Tuning"],"department":[{"_id":"78"}],"publication":"Proc. NASA/ESA Conf. Adaptive Hardware and Systems (AHS)","author":[{"last_name":"Ho","full_name":"Ho, Nam","first_name":"Nam"},{"last_name":"Ahmed","first_name":"Abdullah Fathi","full_name":"Ahmed, Abdullah Fathi"},{"full_name":"Kaufmann, Paul","first_name":"Paul","last_name":"Kaufmann"},{"last_name":"Platzner","id":"398","first_name":"Marco","full_name":"Platzner, Marco"}],"title":"Microarchitectural optimization by means of reconfigurable and evolvable cache mappings","user_id":"3118","page":"1-7","year":"2015","citation":{"chicago":"Ho, Nam, Abdullah Fathi Ahmed, Paul Kaufmann, and Marco Platzner. “Microarchitectural Optimization by Means of Reconfigurable and Evolvable Cache Mappings.” In Proc. NASA/ESA Conf. Adaptive Hardware and Systems (AHS), 1–7, 2015. https://doi.org/10.1109/AHS.2015.7231178.","ama":"Ho N, Ahmed AF, Kaufmann P, Platzner M. Microarchitectural optimization by means of reconfigurable and evolvable cache mappings. In: Proc. NASA/ESA Conf. Adaptive Hardware and Systems (AHS). ; 2015:1-7. doi:10.1109/AHS.2015.7231178","apa":"Ho, N., Ahmed, A. F., Kaufmann, P., & Platzner, M. (2015). Microarchitectural optimization by means of reconfigurable and evolvable cache mappings. In Proc. NASA/ESA Conf. Adaptive Hardware and Systems (AHS) (pp. 1–7). https://doi.org/10.1109/AHS.2015.7231178","bibtex":"@inproceedings{Ho_Ahmed_Kaufmann_Platzner_2015, title={Microarchitectural optimization by means of reconfigurable and evolvable cache mappings}, DOI={10.1109/AHS.2015.7231178}, booktitle={Proc. NASA/ESA Conf. Adaptive Hardware and Systems (AHS)}, author={Ho, Nam and Ahmed, Abdullah Fathi and Kaufmann, Paul and Platzner, Marco}, year={2015}, pages={1–7} }","mla":"Ho, Nam, et al. “Microarchitectural Optimization by Means of Reconfigurable and Evolvable Cache Mappings.” Proc. NASA/ESA Conf. Adaptive Hardware and Systems (AHS), 2015, pp. 1–7, doi:10.1109/AHS.2015.7231178.","short":"N. Ho, A.F. Ahmed, P. Kaufmann, M. Platzner, in: Proc. NASA/ESA Conf. Adaptive Hardware and Systems (AHS), 2015, pp. 1–7.","ieee":"N. Ho, A. F. Ahmed, P. Kaufmann, and M. Platzner, “Microarchitectural optimization by means of reconfigurable and evolvable cache mappings,” in Proc. NASA/ESA Conf. Adaptive Hardware and Systems (AHS), 2015, pp. 1–7."},"type":"conference","language":[{"iso":"eng"}],"doi":"10.1109/AHS.2015.7231178","date_updated":"2022-01-06T06:50:49Z","_id":"10673"},{"user_id":"66","title":"Hierarchisches Optimierungskonzept für die Laststeuerung von Haushaltsgeräten","abstract":[{"lang":"eng","text":"Haushaltsgeräte aus der Klasse der \"Weißen Ware\" tragen mit etwa einem Drittel ($34,2%$ \\citeBDEW2013) zum privaten Energieverbrauch bei. Diese Veröffentlichung präsentiert eine Struktur und die dafür notwendige optimale Betriebsstrategie für Weiße Ware in einer Umgebung mit Strompreisen, die wegen der Volatilität der Regenerativen Energien stark fluktuieren. Das vorgeschlagene Konzept nutzt dafür ein dezentrales Energiemanagementsystem, das über drei Hierarchieebenen verteilt ist: die Geräteebene, die Haushaltsebene und die Ortsnetzebene. Auf der Geräteebene nutzt dieses Konzept zusätzlich Betriebsflexibilitäten der Haushaltsgeräte aus."}],"place":"Kassel","date_created":"2022-02-23T09:24:36Z","status":"public","keyword":["Energy management","hybrid energy storage system","self-optimization","multi-objective optimization","adaptive systems","pareto set","SFB614-D1","SFB614-D2","LEA-Publikation","Eigene"],"department":[{"_id":"52"}],"publication":"ETG-Fachtagung \"Von Smart Grids zu Smart Markets\"","publisher":"VDE","author":[{"last_name":"Stille","id":"30152","first_name":"Karl Stephan Christian","full_name":"Stille, Karl Stephan Christian","orcid":"0000-0002-4212-6555"},{"full_name":"Böcker, Joachim","orcid":"0000-0002-8480-7295","first_name":"Joachim","id":"66","last_name":"Böcker"},{"full_name":"Bettentrup, Ralf","first_name":"Ralf","last_name":"Bettentrup"},{"last_name":"Kaiser","full_name":"Kaiser, Ingo","first_name":"Ingo"}],"_id":"29973","date_updated":"2022-02-23T16:10:58Z","language":[{"iso":"eng"}],"year":"2015","type":"conference","citation":{"bibtex":"@inproceedings{Stille_Böcker_Bettentrup_Kaiser_2015, place={Kassel}, title={Hierarchisches Optimierungskonzept für die Laststeuerung von Haushaltsgeräten}, booktitle={ETG-Fachtagung “Von Smart Grids zu Smart Markets”}, publisher={VDE}, author={Stille, Karl Stephan Christian and Böcker, Joachim and Bettentrup, Ralf and Kaiser, Ingo}, year={2015} }","mla":"Stille, Karl Stephan Christian, et al. “Hierarchisches Optimierungskonzept Für Die Laststeuerung von Haushaltsgeräten.” ETG-Fachtagung “Von Smart Grids Zu Smart Markets,” VDE, 2015.","apa":"Stille, K. S. C., Böcker, J., Bettentrup, R., & Kaiser, I. (2015). Hierarchisches Optimierungskonzept für die Laststeuerung von Haushaltsgeräten. ETG-Fachtagung “Von Smart Grids Zu Smart Markets.”","ama":"Stille KSC, Böcker J, Bettentrup R, Kaiser I. Hierarchisches Optimierungskonzept für die Laststeuerung von Haushaltsgeräten. In: ETG-Fachtagung “Von Smart Grids Zu Smart Markets.” VDE; 2015.","chicago":"Stille, Karl Stephan Christian, Joachim Böcker, Ralf Bettentrup, and Ingo Kaiser. “Hierarchisches Optimierungskonzept Für Die Laststeuerung von Haushaltsgeräten.” In ETG-Fachtagung “Von Smart Grids Zu Smart Markets.” Kassel: VDE, 2015.","ieee":"K. S. C. Stille, J. Böcker, R. Bettentrup, and I. Kaiser, “Hierarchisches Optimierungskonzept für die Laststeuerung von Haushaltsgeräten,” 2015.","short":"K.S.C. Stille, J. Böcker, R. Bettentrup, I. Kaiser, in: ETG-Fachtagung “Von Smart Grids Zu Smart Markets,” VDE, Kassel, 2015."},"main_file_link":[{"url":"https://www.vde-verlag.de/proceedings-en/453897045.html"}]},{"_id":"48838","page":"1319–1326","type":"conference","year":"2015","citation":{"mla":"Bossek, Jakob, et al. “Learning Feature-Parameter Mappings for Parameter Tuning via the Profile Expected Improvement.” Proceedings of the Genetic and Evolutionary Computation Conference, Association for Computing Machinery, 2015, pp. 1319–1326, doi:10.1145/2739480.2754673.","bibtex":"@inproceedings{Bossek_Bischl_Wagner_Rudolph_2015, place={New York, NY, USA}, series={GECCO ’15}, title={Learning Feature-Parameter Mappings for Parameter Tuning via the Profile Expected Improvement}, DOI={10.1145/2739480.2754673}, booktitle={Proceedings of the Genetic and Evolutionary Computation Conference}, publisher={Association for Computing Machinery}, author={Bossek, Jakob and Bischl, Bernd and Wagner, Tobias and Rudolph, Günter}, year={2015}, pages={1319–1326}, collection={GECCO ’15} }","chicago":"Bossek, Jakob, Bernd Bischl, Tobias Wagner, and Günter Rudolph. “Learning Feature-Parameter Mappings for Parameter Tuning via the Profile Expected Improvement.” In Proceedings of the Genetic and Evolutionary Computation Conference, 1319–1326. GECCO ’15. New York, NY, USA: Association for Computing Machinery, 2015. https://doi.org/10.1145/2739480.2754673.","apa":"Bossek, J., Bischl, B., Wagner, T., & Rudolph, G. (2015). Learning Feature-Parameter Mappings for Parameter Tuning via the Profile Expected Improvement. Proceedings of the Genetic and Evolutionary Computation Conference, 1319–1326. https://doi.org/10.1145/2739480.2754673","ama":"Bossek J, Bischl B, Wagner T, Rudolph G. Learning Feature-Parameter Mappings for Parameter Tuning via the Profile Expected Improvement. In: Proceedings of the Genetic and Evolutionary Computation Conference. GECCO ’15. Association for Computing Machinery; 2015:1319–1326. doi:10.1145/2739480.2754673","ieee":"J. Bossek, B. Bischl, T. Wagner, and G. Rudolph, “Learning Feature-Parameter Mappings for Parameter Tuning via the Profile Expected Improvement,” in Proceedings of the Genetic and Evolutionary Computation Conference, 2015, pp. 1319–1326, doi: 10.1145/2739480.2754673.","short":"J. Bossek, B. Bischl, T. Wagner, G. Rudolph, in: Proceedings of the Genetic and Evolutionary Computation Conference, Association for Computing Machinery, New York, NY, USA, 2015, pp. 1319–1326."},"user_id":"102979","abstract":[{"text":"The majority of algorithms can be controlled or adjusted by parameters. Their values can substantially affect the algorithms’ performance. Since the manual exploration of the parameter space is tedious – even for few parameters – several automatic procedures for parameter tuning have been proposed. Recent approaches also take into account some characteristic properties of the problem instances, frequently termed instance features. Our contribution is the proposal of a novel concept for feature-based algorithm parameter tuning, which applies an approximating surrogate model for learning the continuous feature-parameter mapping. To accomplish this, we learn a joint model of the algorithm performance based on both the algorithm parameters and the instance features. The required data is gathered using a recently proposed acquisition function for model refinement in surrogate-based optimization: the profile expected improvement. This function provides an avenue for maximizing the information required for the feature-parameter mapping, i.e., the mapping from instance features to the corresponding optimal algorithm parameters. The approach is validated by applying the tuner to exemplary evolutionary algorithms and problems, for which theoretically grounded or heuristically determined feature-parameter mappings are available.","lang":"eng"}],"extern":"1","date_created":"2023-11-14T15:58:51Z","status":"public","keyword":["evolutionary algorithms","model-based optimization","parameter tuning"],"publication":"Proceedings of the Genetic and Evolutionary Computation Conference","author":[{"first_name":"Jakob","orcid":"0000-0002-4121-4668","full_name":"Bossek, Jakob","last_name":"Bossek","id":"102979"},{"first_name":"Bernd","full_name":"Bischl, Bernd","last_name":"Bischl"},{"last_name":"Wagner","first_name":"Tobias","full_name":"Wagner, Tobias"},{"first_name":"Günter","full_name":"Rudolph, Günter","last_name":"Rudolph"}],"publisher":"Association for Computing Machinery","doi":"10.1145/2739480.2754673","date_updated":"2023-12-13T10:40:30Z","language":[{"iso":"eng"}],"series_title":"GECCO ’15","title":"Learning Feature-Parameter Mappings for Parameter Tuning via the Profile Expected Improvement","place":"New York, NY, USA","publication_status":"published","publication_identifier":{"isbn":["978-1-4503-3472-3"]},"department":[{"_id":"819"}]},{"page":"425–432","citation":{"apa":"Meisel, S., Grimme, C., Bossek, J., Wölck, M., Rudolph, G., & Trautmann, H. (2015). Evaluation of a Multi-Objective EA on Benchmark Instances for Dynamic Routing of a Vehicle. Proceedings of the Genetic and Evolutionary Computation Conference , 425–432. https://doi.org/10.1145/2739480.2754705","ama":"Meisel S, Grimme C, Bossek J, Wölck M, Rudolph G, Trautmann H. Evaluation of a Multi-Objective EA on Benchmark Instances for Dynamic Routing of a Vehicle. In: Proceedings of the Genetic and Evolutionary Computation Conference . GECCO’15. Association for Computing Machinery; 2015:425–432. doi:10.1145/2739480.2754705","chicago":"Meisel, Stephan, Christian Grimme, Jakob Bossek, Martin Wölck, Günter Rudolph, and Heike Trautmann. “Evaluation of a Multi-Objective EA on Benchmark Instances for Dynamic Routing of a Vehicle.” In Proceedings of the Genetic and Evolutionary Computation Conference , 425–432. GECCO’15. New York, NY, USA: Association for Computing Machinery, 2015. https://doi.org/10.1145/2739480.2754705.","bibtex":"@inproceedings{Meisel_Grimme_Bossek_Wölck_Rudolph_Trautmann_2015, place={New York, NY, USA}, series={GECCO’15}, title={Evaluation of a Multi-Objective EA on Benchmark Instances for Dynamic Routing of a Vehicle}, DOI={10.1145/2739480.2754705}, booktitle={Proceedings of the Genetic and Evolutionary Computation Conference }, publisher={Association for Computing Machinery}, author={Meisel, Stephan and Grimme, Christian and Bossek, Jakob and Wölck, Martin and Rudolph, Günter and Trautmann, Heike}, year={2015}, pages={425–432}, collection={GECCO’15} }","mla":"Meisel, Stephan, et al. “Evaluation of a Multi-Objective EA on Benchmark Instances for Dynamic Routing of a Vehicle.” Proceedings of the Genetic and Evolutionary Computation Conference , Association for Computing Machinery, 2015, pp. 425–432, doi:10.1145/2739480.2754705.","short":"S. Meisel, C. Grimme, J. Bossek, M. Wölck, G. Rudolph, H. Trautmann, in: Proceedings of the Genetic and Evolutionary Computation Conference , Association for Computing Machinery, New York, NY, USA, 2015, pp. 425–432.","ieee":"S. Meisel, C. Grimme, J. Bossek, M. Wölck, G. Rudolph, and H. Trautmann, “Evaluation of a Multi-Objective EA on Benchmark Instances for Dynamic Routing of a Vehicle,” in Proceedings of the Genetic and Evolutionary Computation Conference , 2015, pp. 425–432, doi: 10.1145/2739480.2754705."},"year":"2015","type":"conference","_id":"48887","date_created":"2023-11-14T15:58:59Z","status":"public","publication":"Proceedings of the Genetic and Evolutionary Computation Conference ","keyword":["combinatorial optimization","metaheuristics","multi-objective optimization","online algorithms","transportation"],"author":[{"last_name":"Meisel","full_name":"Meisel, Stephan","first_name":"Stephan"},{"last_name":"Grimme","full_name":"Grimme, Christian","first_name":"Christian"},{"full_name":"Bossek, Jakob","orcid":"0000-0002-4121-4668","first_name":"Jakob","id":"102979","last_name":"Bossek"},{"first_name":"Martin","full_name":"Wölck, Martin","last_name":"Wölck"},{"first_name":"Günter","full_name":"Rudolph, Günter","last_name":"Rudolph"},{"full_name":"Trautmann, Heike","first_name":"Heike","last_name":"Trautmann"}],"publisher":"Association for Computing Machinery","user_id":"102979","extern":"1","abstract":[{"text":"We evaluate the performance of a multi-objective evolutionary algorithm on a class of dynamic routing problems with a single vehicle. In particular we focus on relating algorithmic performance to the most prominent characteristics of problem instances. The routing problem considers two types of customers: mandatory customers must be visited whereas optional customers do not necessarily have to be visited. Moreover, mandatory customers are known prior to the start of the tour whereas optional customers request for service at later points in time with the vehicle already being on its way. The multi-objective optimization problem then results as maximizing the number of visited customers while simultaneously minimizing total travel time. As an a-posteriori evaluation tool, the evolutionary algorithm aims at approximating the related Pareto set for specifically designed benchmarking instances differing in terms of number of customers, geographical layout, fraction of mandatory customers, and request times of optional customers. Conceptional and experimental comparisons to online heuristic procedures are provided.","lang":"eng"}],"language":[{"iso":"eng"}],"series_title":"GECCO’15","doi":"10.1145/2739480.2754705","date_updated":"2023-12-13T10:49:06Z","publication_identifier":{"isbn":["978-1-4503-3472-3"]},"department":[{"_id":"819"}],"title":"Evaluation of a Multi-Objective EA on Benchmark Instances for Dynamic Routing of a Vehicle","place":"New York, NY, USA"},{"_id":"17661","date_updated":"2022-01-06T06:53:16Z","series_title":"AAMAS '14","page":"1651-1652","year":"2014","citation":{"ieee":"T. C. King et al., “Request Driven Social Sensing,” in Proceedings of the 2014 International Conference on Autonomous Agents and Multi-agent Systems, 2014, pp. 1651–1652.","short":"T.C. King, Q. Liu, G. Polevoy, M. de Weerdt, V. Dignum, M.B. van Riemsdijk, M. Warnier, in: Proceedings of the 2014 International Conference on Autonomous Agents and Multi-Agent Systems, International Foundation for Autonomous Agents and Multiagent Systems, Richland, SC, 2014, pp. 1651–1652.","bibtex":"@inproceedings{King_Liu_Polevoy_de Weerdt_Dignum_van Riemsdijk_Warnier_2014, place={Richland, SC}, series={AAMAS ’14}, title={Request Driven Social Sensing}, booktitle={Proceedings of the 2014 International Conference on Autonomous Agents and Multi-agent Systems}, publisher={International Foundation for Autonomous Agents and Multiagent Systems}, author={King, Thomas C. and Liu, Qingzhi and Polevoy, Gleb and de Weerdt, Mathijs and Dignum, Virginia and van Riemsdijk, M. Birna and Warnier, Martijn}, year={2014}, pages={1651–1652}, collection={AAMAS ’14} }","mla":"King, Thomas C., et al. “Request Driven Social Sensing.” Proceedings of the 2014 International Conference on Autonomous Agents and Multi-Agent Systems, International Foundation for Autonomous Agents and Multiagent Systems, 2014, pp. 1651–52.","chicago":"King, Thomas C., Qingzhi Liu, Gleb Polevoy, Mathijs de Weerdt, Virginia Dignum, M. Birna van Riemsdijk, and Martijn Warnier. “Request Driven Social Sensing.” In Proceedings of the 2014 International Conference on Autonomous Agents and Multi-Agent Systems, 1651–52. AAMAS ’14. Richland, SC: International Foundation for Autonomous Agents and Multiagent Systems, 2014.","apa":"King, T. C., Liu, Q., Polevoy, G., de Weerdt, M., Dignum, V., van Riemsdijk, M. B., & Warnier, M. (2014). Request Driven Social Sensing. In Proceedings of the 2014 International Conference on Autonomous Agents and Multi-agent Systems (pp. 1651–1652). Richland, SC: International Foundation for Autonomous Agents and Multiagent Systems.","ama":"King TC, Liu Q, Polevoy G, et al. Request Driven Social Sensing. In: Proceedings of the 2014 International Conference on Autonomous Agents and Multi-Agent Systems. AAMAS ’14. Richland, SC: International Foundation for Autonomous Agents and Multiagent Systems; 2014:1651-1652."},"type":"conference","language":[{"iso":"eng"}],"extern":"1","place":"Richland, SC","title":"Request Driven Social Sensing","user_id":"83983","department":[{"_id":"63"},{"_id":"541"}],"publication":"Proceedings of the 2014 International Conference on Autonomous Agents and Multi-agent Systems","keyword":["crowd-sensing","crowdsourcing","data aggregation","game theory","norms","reciprocation","self interested agents","simulation"],"author":[{"last_name":"King","full_name":"King, Thomas C.","first_name":"Thomas C."},{"last_name":"Liu","full_name":"Liu, Qingzhi","first_name":"Qingzhi"},{"first_name":"Gleb","full_name":"Polevoy, Gleb","last_name":"Polevoy","id":"83983"},{"full_name":"de Weerdt, Mathijs","first_name":"Mathijs","last_name":"de Weerdt"},{"first_name":"Virginia","full_name":"Dignum, Virginia","last_name":"Dignum"},{"last_name":"van Riemsdijk","first_name":"M. Birna","full_name":"van Riemsdijk, M. Birna"},{"full_name":"Warnier, Martijn","first_name":"Martijn","last_name":"Warnier"}],"publisher":"International Foundation for Autonomous Agents and Multiagent Systems","publication_identifier":{"isbn":["978-1-4503-2738-1"]},"date_created":"2020-08-06T15:21:45Z","status":"public"},{"language":[{"iso":"eng"}],"page":"1-6","citation":{"bibtex":"@inproceedings{Kimotho_Meyer_Sextro_2014, title={PEM fuel cell prognostics using particle filter with model parameter adaptation}, DOI={10.1109/ICPHM.2014.7036406}, booktitle={Prognostics and Health Management (PHM), 2014 IEEE Conference on}, author={Kimotho, James Kuria and Meyer, Tobias and Sextro, Walter}, year={2014}, pages={1–6} }","mla":"Kimotho, James Kuria, et al. “PEM Fuel Cell Prognostics Using Particle Filter with Model Parameter Adaptation.” Prognostics and Health Management (PHM), 2014 IEEE Conference On, 2014, pp. 1–6, doi:10.1109/ICPHM.2014.7036406.","chicago":"Kimotho, James Kuria , Tobias Meyer, and Walter Sextro. “PEM Fuel Cell Prognostics Using Particle Filter with Model Parameter Adaptation.” In Prognostics and Health Management (PHM), 2014 IEEE Conference On, 1–6, 2014. https://doi.org/10.1109/ICPHM.2014.7036406.","ama":"Kimotho JK, Meyer T, Sextro W. PEM fuel cell prognostics using particle filter with model parameter adaptation. In: Prognostics and Health Management (PHM), 2014 IEEE Conference On. ; 2014:1-6. doi:10.1109/ICPHM.2014.7036406","apa":"Kimotho, J. K., Meyer, T., & Sextro, W. (2014). PEM fuel cell prognostics using particle filter with model parameter adaptation. In Prognostics and Health Management (PHM), 2014 IEEE Conference on (pp. 1–6). https://doi.org/10.1109/ICPHM.2014.7036406","ieee":"J. K. Kimotho, T. Meyer, and W. Sextro, “PEM fuel cell prognostics using particle filter with model parameter adaptation,” in Prognostics and Health Management (PHM), 2014 IEEE Conference on, 2014, pp. 1–6.","short":"J.K. Kimotho, T. Meyer, W. Sextro, in: Prognostics and Health Management (PHM), 2014 IEEE Conference On, 2014, pp. 1–6."},"type":"conference","year":"2014","date_updated":"2019-05-20T13:12:27Z","_id":"9879","doi":"10.1109/ICPHM.2014.7036406","keyword":["ageing","particle filtering (numerical methods)","proton exchange membrane fuel cells","remaining life assessment","PEM fuel cell prognostics","PHM","RUL predictions","accelerated degradation","adaptive particle filter algorithm","dynamic loading","model parameter adaptation","prognostics and health management","proton exchange membrane fuel cells","remaining useful life estimation","self-healing effect","Adaptation models","Data models","Degradation","Estimation","Fuel cells","Mathematical model","Prognostics and health management"],"department":[{"_id":"151"}],"publication":"Prognostics and Health Management (PHM), 2014 IEEE Conference on","author":[{"full_name":"Kimotho, James Kuria ","first_name":"James Kuria ","last_name":"Kimotho"},{"last_name":"Meyer","full_name":"Meyer, Tobias","first_name":"Tobias"},{"id":"21220","last_name":"Sextro","full_name":"Sextro, Walter","first_name":"Walter"}],"date_created":"2019-05-20T13:11:02Z","status":"public","abstract":[{"text":"Application of prognostics and health management (PHM) in the field of Proton Exchange Membrane (PEM) fuel cells is emerging as an important tool in increasing the reliability and availability of these systems. Though a lot of work is currently being conducted to develop PHM systems for fuel cells, various challenges have been encountered including the self-healing effect after characterization as well as accelerated degradation due to dynamic loading, all which make RUL predictions a difficult task. In this study, a prognostic approach based on adaptive particle filter algorithm is proposed. The novelty of the proposed method lies in the introduction of a self-healing factor after each characterization and the adaption of the degradation model parameters to fit to the changing degradation trend. An ensemble of five different state models based on weighted mean is then developed. The results show that the method is effective in estimating the remaining useful life of PEM fuel cells, with majority of the predictions falling within 5\\% error. The method was employed in the IEEE 2014 PHM Data Challenge and led to our team emerging the winner of the RUL category of the challenge.","lang":"eng"}],"user_id":"55222","title":"PEM fuel cell prognostics using particle filter with model parameter adaptation"},{"volume":5,"status":"public","date_created":"2019-05-20T13:18:20Z","author":[{"first_name":"Tobias","full_name":"Meyer , Tobias","last_name":"Meyer "},{"last_name":"Sextro","full_name":"Sextro, Walter","first_name":"Walter"}],"department":[{"_id":"151"}],"keyword":["self-optimization reliability adaptive"],"publication":"Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014","title":"Closed-loop Control System for the Reliability of Intelligent Mechatronic Systems","user_id":"55222","abstract":[{"lang":"eng","text":"So-called reliability adaptive systems are able to adapt their system behavior based on the current reliability of the system. This allows them to react to changed operating conditions or faults within the system that change the degradation behavior. To implement such reliability adaptation, self-optimization can be used. A self-optimizing system pursues objectives, of which the priorities can be changed at runtime, in turn changing the system behavior. When including system reliability as an objective of the system, it becomes possible to change the system based on the current reliability as well. This capability can be used to control the reliability of the system throughout its operation period in order to achieve a pre-defined or user-selectable system lifetime. This way, optimal planning of maintenance intervals is possible while also using the system capabilities to their full extent. Our proposed control system makes it possible to react to changed degradation behavior by selecting objectives of the self-optimizing system and in turn changing the operating parameters in a closed loop. A two-stage controller is designed which is used to select the currently required priorities of the objectives in order to fulfill the desired usable lifetime. Investigations using a model of an automotive clutch system serve to demonstrate the feasibility of our controller. It is shown that the desired lifetime can be achieved reliably."}],"citation":{"short":"T. Meyer , W. Sextro, in: Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014, 2014.","ieee":"T. Meyer and W. Sextro, “Closed-loop Control System for the Reliability of Intelligent Mechatronic Systems,” in Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014, 2014, vol. 5.","ama":"Meyer T, Sextro W. Closed-loop Control System for the Reliability of Intelligent Mechatronic Systems. In: Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014. Vol 5. ; 2014.","apa":"Meyer , T., & Sextro, W. (2014). Closed-loop Control System for the Reliability of Intelligent Mechatronic Systems. In Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014 (Vol. 5).","chicago":"Meyer , Tobias, and Walter Sextro. “Closed-Loop Control System for the Reliability of Intelligent Mechatronic Systems.” In Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014, Vol. 5, 2014.","mla":"Meyer , Tobias, and Walter Sextro. “Closed-Loop Control System for the Reliability of Intelligent Mechatronic Systems.” Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014, vol. 5, 2014.","bibtex":"@inproceedings{Meyer _Sextro_2014, title={Closed-loop Control System for the Reliability of Intelligent Mechatronic Systems}, volume={5}, booktitle={Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014}, author={Meyer , Tobias and Sextro, Walter}, year={2014} }"},"type":"conference","year":"2014","language":[{"iso":"eng"}],"intvolume":" 5","_id":"9884","date_updated":"2019-05-20T13:19:08Z"},{"language":[{"iso":"eng"}],"page":"46-53","year":"2014","citation":{"apa":"Meyer , T., Sondermann-Wölke, C., & Sextro, W. (2014). Method to Identify Dependability Objectives in Multiobjective Optimization Problem. Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence, 15, 46–53. https://doi.org/10.1016/j.protcy.2014.09.033","ama":"Meyer T, Sondermann-Wölke C, Sextro W. Method to Identify Dependability Objectives in Multiobjective Optimization Problem. Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence. 2014;15:46-53. doi:10.1016/j.protcy.2014.09.033","chicago":"Meyer , Tobias, Christoph Sondermann-Wölke, and Walter Sextro. “Method to Identify Dependability Objectives in Multiobjective Optimization Problem.” Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence 15 (2014): 46–53. https://doi.org/10.1016/j.protcy.2014.09.033.","bibtex":"@article{Meyer _Sondermann-Wölke_Sextro_2014, title={Method to Identify Dependability Objectives in Multiobjective Optimization Problem}, volume={15}, DOI={10.1016/j.protcy.2014.09.033}, journal={Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence}, author={Meyer , Tobias and Sondermann-Wölke, Christoph and Sextro, Walter}, year={2014}, pages={46–53} }","mla":"Meyer , Tobias, et al. “Method to Identify Dependability Objectives in Multiobjective Optimization Problem.” Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence, vol. 15, 2014, pp. 46–53, doi:10.1016/j.protcy.2014.09.033.","short":"T. Meyer , C. Sondermann-Wölke, W. Sextro, Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence 15 (2014) 46–53.","ieee":"T. Meyer , C. Sondermann-Wölke, and W. Sextro, “Method to Identify Dependability Objectives in Multiobjective Optimization Problem,” Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence, vol. 15, pp. 46–53, 2014."},"type":"journal_article","intvolume":" 15","_id":"9885","date_updated":"2019-09-16T10:22:04Z","doi":"10.1016/j.protcy.2014.09.033","keyword":["Self-optimization","multiobjective optimization","objective function","dependability","intelligent system","behavior adaptation"],"department":[{"_id":"151"}],"publication":"Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence","author":[{"first_name":"Tobias","full_name":"Meyer , Tobias","last_name":"Meyer "},{"first_name":"Christoph","full_name":"Sondermann-Wölke, Christoph","last_name":"Sondermann-Wölke"},{"full_name":"Sextro, Walter","first_name":"Walter","id":"21220","last_name":"Sextro"}],"quality_controlled":"1","date_created":"2019-05-20T13:19:37Z","status":"public","volume":15,"abstract":[{"lang":"eng","text":"Intelligent mechatronic systems, such as self-optimizing systems, allow an adaptation of the system behavior at runtime based on the current situation. To do so, they generally select among several pre-defined working points. A common method to determine working points for a mechatronic system is to use model-based multiobjective optimization. It allows finding compromises among conflicting objectives, called objective functions, by adapting parameters. To evaluate the system behavior for different parameter sets, a model of the system behavior is included in the objective functions and is evaluated during each function call. Intelligent mechatronic systems also have the ability to adapt their behavior based on their current reliability, thus increasing their availability, or on changed safety requirements; all of which are summed up by the common term dependability. To allow this adaptation, dependability can be considered in multiobjective optimization by including dependability-related objective functions. However, whereas performance-related objective functions are easily found, formulation of dependability-related objective functions is highly system-specific and not intuitive, making it complex and error-prone. Since each mechatronic system is different, individual failure modes have to be taken into account, which need to be found using common methods such as Failure-Modes and Effects Analysis or Fault Tree Analysis. Using component degradation models, which again are specific to the system at hand, the main loading factors can be determined. By including these in the model of the system behavior, the relation between working point and dependability can be formulated as an objective function. In our work, this approach is presented in more detail. It is exemplified using an actively actuated single plate dry clutch system. Results show that this approach is suitable for formulating dependability-related objective functions and that these can be used to extend system lifetime by adapting system behavior."}],"user_id":"55222","title":"Method to Identify Dependability Objectives in Multiobjective Optimization Problem"},{"date_updated":"2022-01-06T06:50:49Z","_id":"10677","doi":"10.1109/ICES.2014.7008719","language":[{"iso":"eng"}],"year":"2014","citation":{"apa":"Ho, N., Kaufmann, P., & Platzner, M. (2014). Towards self-adaptive caches: A run-time reconfigurable multi-core infrastructure. In 2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES) (pp. 31–37). https://doi.org/10.1109/ICES.2014.7008719","ama":"Ho N, Kaufmann P, Platzner M. Towards self-adaptive caches: A run-time reconfigurable multi-core infrastructure. In: 2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES). ; 2014:31-37. doi:10.1109/ICES.2014.7008719","chicago":"Ho, Nam, Paul Kaufmann, and Marco Platzner. “Towards Self-Adaptive Caches: A Run-Time Reconfigurable Multi-Core Infrastructure.” In 2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES), 31–37, 2014. https://doi.org/10.1109/ICES.2014.7008719.","mla":"Ho, Nam, et al. “Towards Self-Adaptive Caches: A Run-Time Reconfigurable Multi-Core Infrastructure.” 2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES), 2014, pp. 31–37, doi:10.1109/ICES.2014.7008719.","bibtex":"@inproceedings{Ho_Kaufmann_Platzner_2014, title={Towards self-adaptive caches: A run-time reconfigurable multi-core infrastructure}, DOI={10.1109/ICES.2014.7008719}, booktitle={2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES)}, author={Ho, Nam and Kaufmann, Paul and Platzner, Marco}, year={2014}, pages={31–37} }","short":"N. Ho, P. Kaufmann, M. Platzner, in: 2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES), 2014, pp. 31–37.","ieee":"N. Ho, P. Kaufmann, and M. Platzner, “Towards self-adaptive caches: A run-time reconfigurable multi-core infrastructure,” in 2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES), 2014, pp. 31–37."},"type":"conference","page":"31-37","user_id":"3118","title":"Towards self-adaptive caches: A run-time reconfigurable multi-core infrastructure","author":[{"last_name":"Ho","full_name":"Ho, Nam","first_name":"Nam"},{"full_name":"Kaufmann, Paul","first_name":"Paul","last_name":"Kaufmann"},{"first_name":"Marco","full_name":"Platzner, Marco","last_name":"Platzner","id":"398"}],"department":[{"_id":"78"}],"keyword":["Linux","cache storage","embedded systems","granular computing","multiprocessing systems","reconfigurable architectures","Leon3 SPARe processor","custom logic events","evolvable-self-adaptable processor cache","fine granular profiling","integer unit events","measurement infrastructure","microarchitectural events","multicore embedded system","perf_event standard Linux performance measurement interface","processor properties","run-time reconfigurable memory-to-cache address mapping engine","run-time reconfigurable multicore infrastructure","split-level caching","Field programmable gate arrays","Frequency locked loops","Irrigation","Phasor measurement units","Registers","Weaving"],"publication":"2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES)","status":"public","date_created":"2019-07-10T11:23:00Z"},{"title":"Numerical Representations and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research Framework","user_id":"62809","abstract":[{"lang":"eng","text":"The new technological enhancements and the accessibility to varieties of online applications, enable users to collect personal data and perform self-evaluation through test, comparison and experimentation. The sparked interest in numbers and numbers as self-representative visualisations is prominent in social networking sites, which are the empirical setting for the present study. This paper sets out to establish a multi-theoretical framework which enables the investigation of emerging phenomena of the role of numbers in social networking sites. The proposed framework rests on three theoretical pillars: self-determination theory, heuristic decision making and behavioural economics. A discussion departs from these convictions to investigate user reactions and behaviour when faced with numerical representations in the SNS."}],"publication_identifier":{"isbn":["9783834924421"]},"date_created":"2019-09-19T12:14:55Z","status":"public","publication":"ECIS 2013 Proceedings","keyword":["User Behaviour","Social Networking Sites","Numerical Representations","Multi-Theoretical Framework","Quantified Self","Pointification"],"department":[{"_id":"198"}],"publisher":"Association for Information Systems. AIS Electronic Library (AISeL)","author":[{"first_name":"Mimmi","full_name":"Sjöklint, Mimmi","last_name":"Sjöklint"},{"last_name":"Constantiou","full_name":"Constantiou, Ioanna","first_name":"Ioanna"},{"id":"72744","last_name":"Trier","full_name":"Trier, Matthias","first_name":"Matthias"}],"date_updated":"2022-01-06T06:51:33Z","_id":"13324","citation":{"short":"M. Sjöklint, I. Constantiou, M. Trier, in: ECIS 2013 Proceedings, Association for Information Systems. AIS Electronic Library (AISeL), 2013.","ieee":"M. Sjöklint, I. Constantiou, and M. Trier, “Numerical Representations and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research Framework,” in ECIS 2013 Proceedings, 2013.","chicago":"Sjöklint, Mimmi, Ioanna Constantiou, and Matthias Trier. “Numerical Representations and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research Framework.” In ECIS 2013 Proceedings. Association for Information Systems. AIS Electronic Library (AISeL), 2013.","ama":"Sjöklint M, Constantiou I, Trier M. Numerical Representations and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research Framework. In: ECIS 2013 Proceedings. Association for Information Systems. AIS Electronic Library (AISeL); 2013.","apa":"Sjöklint, M., Constantiou, I., & Trier, M. (2013). Numerical Representations and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research Framework. In ECIS 2013 Proceedings. Association for Information Systems. AIS Electronic Library (AISeL).","mla":"Sjöklint, Mimmi, et al. “Numerical Representations and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research Framework.” ECIS 2013 Proceedings, Association for Information Systems. AIS Electronic Library (AISeL), 2013.","bibtex":"@inproceedings{Sjöklint_Constantiou_Trier_2013, title={Numerical Representations and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research Framework}, booktitle={ECIS 2013 Proceedings}, publisher={Association for Information Systems. AIS Electronic Library (AISeL)}, author={Sjöklint, Mimmi and Constantiou, Ioanna and Trier, Matthias}, year={2013} }"},"type":"conference","year":"2013","language":[{"iso":"eng"}]},{"department":[{"_id":"635"},{"_id":"186"},{"_id":"551"}],"keyword":["private firms","voluntary audit","cost of debt","self-selection bias","lemon problem"],"author":[{"last_name":"Kosi","id":"54068","first_name":"Urska","full_name":"Kosi, Urska"},{"last_name":"Koren","first_name":"Jerney","full_name":"Koren, Jerney"},{"full_name":"Valentincic, Aljosa","first_name":"Aljosa","last_name":"Valentincic"}],"date_created":"2023-01-17T13:25:30Z","status":"public","abstract":[{"lang":"eng","text":"This study examines the effect of audit on private firms’ cost of debt. We use a sample of 1,949 small private firms operating in the period 2006-2010 with optional financial statement audit. High quality data allows us to construct a more precise interest rate measure than existing studies employ. After controlling for obvious sources of demand for voluntary audits (ownership complexity, subsidiary status, bank relations), we find a robust central result that voluntary audits increase rather than decrease the cost of debt financing, contrary to several existing studies. This finding indicates that voluntary audits are generally treated as “adopting a label” and penalised by creditors, regardless of the perceived auditor quality as a result of the lemon problem in the audit market. Even Big-4 audits increase the cost of debt, likely as a result due to the lemon problem in the audit market, although the increase is smaller than for non-Big-4 audits. The results are sensitive to the estimation method used (OLS, Heckman’s two-step, PSM) and (sub-)sample selection. We show that disregarding the underlying assumptions of these estimation methods may lead to incorrect inferences. Additional analyses show that audited firms’ reported earnings are less informative about future operating performance than earnings of their unaudited counterparts. Our results also indicate that results are sensitive to cost of debt definition and this might have affected the results reported in the existing literature."}],"extern":"1","user_id":"88603","title":"Does Financial Statement Audit Reduce the Cost of Debt of Private Firms?","main_file_link":[{"url":"https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2373987"}],"language":[{"iso":"eng"}],"year":"2013","type":"conference","citation":{"short":"U. Kosi, J. Koren, A. Valentincic, in: 2013.","ieee":"U. Kosi, J. Koren, and A. Valentincic, “Does Financial Statement Audit Reduce the Cost of Debt of Private Firms?,” presented at the 36th Annual Congress of European Accounting Association, Paris, France, 2013.","chicago":"Kosi, Urska, Jerney Koren, and Aljosa Valentincic. “Does Financial Statement Audit Reduce the Cost of Debt of Private Firms?,” 2013.","apa":"Kosi, U., Koren, J., & Valentincic, A. (2013). Does Financial Statement Audit Reduce the Cost of Debt of Private Firms? 36th Annual Congress of European Accounting Association, Paris, France.","ama":"Kosi U, Koren J, Valentincic A. Does Financial Statement Audit Reduce the Cost of Debt of Private Firms? In: ; 2013.","bibtex":"@inproceedings{Kosi_Koren_Valentincic_2013, title={Does Financial Statement Audit Reduce the Cost of Debt of Private Firms?}, author={Kosi, Urska and Koren, Jerney and Valentincic, Aljosa}, year={2013} }","mla":"Kosi, Urska, et al. Does Financial Statement Audit Reduce the Cost of Debt of Private Firms? 2013."},"conference":{"start_date":"2013-05-02","name":"36th Annual Congress of European Accounting Association","location":"Paris, France","end_date":"2013-05-05"},"date_updated":"2023-01-17T13:51:24Z","_id":"37109"},{"date_updated":"2023-10-26T08:11:12Z","doi":"10.1109/ICASSP.2013.6637620","oa":"1","language":[{"iso":"eng"}],"title":"DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic","related_material":{"link":[{"relation":"supplementary_material","description":"Presentation","url":"https://groups.uni-paderborn.de/nt/pubs/2013/JaScHa13_Presentation.pdf"}]},"department":[{"_id":"54"}],"publication_identifier":{"issn":["1520-6149"]},"_id":"11832","main_file_link":[{"url":"https://groups.uni-paderborn.de/nt/pubs/2013/JacSchHae_ICASSP2013_Rev2.pdf","open_access":"1"}],"page":"116-120","citation":{"short":"F. Jacob, J. Schmalenstroeer, R. Haeb-Umbach, in: 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), 2013, pp. 116–120.","ieee":"F. Jacob, J. Schmalenstroeer, and R. Haeb-Umbach, “DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic,” in 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), 2013, pp. 116–120, doi: 10.1109/ICASSP.2013.6637620.","ama":"Jacob F, Schmalenstroeer J, Haeb-Umbach R. DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic. In: 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013). ; 2013:116-120. doi:10.1109/ICASSP.2013.6637620","apa":"Jacob, F., Schmalenstroeer, J., & Haeb-Umbach, R. (2013). DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic. 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), 116–120. https://doi.org/10.1109/ICASSP.2013.6637620","chicago":"Jacob, Florian, Joerg Schmalenstroeer, and Reinhold Haeb-Umbach. “DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic.” In 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), 116–20, 2013. https://doi.org/10.1109/ICASSP.2013.6637620.","bibtex":"@inproceedings{Jacob_Schmalenstroeer_Haeb-Umbach_2013, title={DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic}, DOI={10.1109/ICASSP.2013.6637620}, booktitle={38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013)}, author={Jacob, Florian and Schmalenstroeer, Joerg and Haeb-Umbach, Reinhold}, year={2013}, pages={116–120} }","mla":"Jacob, Florian, et al. “DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic.” 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), 2013, pp. 116–20, doi:10.1109/ICASSP.2013.6637620."},"type":"conference","year":"2013","abstract":[{"lang":"eng","text":"In this paper we propose an approach to retrieve the absolute geometry of an acoustic sensor network, consisting of spatially distributed microphone arrays, from reverberant speech input. The calibration relies on direction of arrival measurements of the individual arrays. The proposed calibration algorithm is derived from a maximum-likelihood approach employing circular statistics. Since a sensor node consists of a microphone array with known intra-array geometry, we are able to obtain an absolute geometry estimate, including angles and distances. Simulation results demonstrate the effectiveness of the approach."}],"user_id":"460","keyword":["Geometry calibration","microphone arrays","position self-calibration"],"publication":"38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013)","quality_controlled":"1","author":[{"first_name":"Florian","full_name":"Jacob, Florian","last_name":"Jacob"},{"full_name":"Schmalenstroeer, Joerg","first_name":"Joerg","id":"460","last_name":"Schmalenstroeer"},{"id":"242","last_name":"Haeb-Umbach","full_name":"Haeb-Umbach, Reinhold","first_name":"Reinhold"}],"date_created":"2019-07-12T05:29:07Z","status":"public"},{"place":"New York, NY, USA","title":"Model-driven Performance Engineering of Self-adaptive Systems: A Survey","user_id":"4870","publication":"{Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}","keyword":["model-driven performance engineering","self-*","Self-adaptation","software performance"],"publisher":"ACM","author":[{"full_name":"Becker, Matthias","first_name":"Matthias","last_name":"Becker"},{"last_name":"Luckey","first_name":"Markus","full_name":"Luckey, Markus"},{"last_name":"Becker","full_name":"Becker, Steffen","first_name":"Steffen"}],"publication_identifier":{"isbn":["978-1-4503-1346-9"]},"date_created":"2021-07-15T08:38:08Z","status":"public","date_updated":"2022-01-06T06:55:39Z","_id":"22737","doi":"10.1145/2304696.2304716","page":"117-122","type":"conference","year":"2012","citation":{"apa":"Becker, M., Luckey, M., & Becker, S. (2012). Model-driven Performance Engineering of Self-adaptive Systems: A Survey. In {Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)} (pp. 117–122). New York, NY, USA: ACM. https://doi.org/10.1145/2304696.2304716","ama":"Becker M, Luckey M, Becker S. Model-driven Performance Engineering of Self-adaptive Systems: A Survey. In: {Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}. New York, NY, USA: ACM; 2012:117-122. doi:10.1145/2304696.2304716","chicago":"Becker, Matthias, Markus Luckey, and Steffen Becker. “Model-Driven Performance Engineering of Self-Adaptive Systems: A Survey.” In {Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}, 117–22. New York, NY, USA: ACM, 2012. https://doi.org/10.1145/2304696.2304716.","bibtex":"@inproceedings{Becker_Luckey_Becker_2012, place={New York, NY, USA}, title={Model-driven Performance Engineering of Self-adaptive Systems: A Survey}, DOI={10.1145/2304696.2304716}, booktitle={{Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}}, publisher={ACM}, author={Becker, Matthias and Luckey, Markus and Becker, Steffen}, year={2012}, pages={117–122} }","mla":"Becker, Matthias, et al. “Model-Driven Performance Engineering of Self-Adaptive Systems: A Survey.” {Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}, ACM, 2012, pp. 117–22, doi:10.1145/2304696.2304716.","short":"M. Becker, M. Luckey, S. Becker, in: {Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}, ACM, New York, NY, USA, 2012, pp. 117–122.","ieee":"M. Becker, M. Luckey, and S. Becker, “Model-driven Performance Engineering of Self-adaptive Systems: A Survey,” in {Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}, 2012, pp. 117–122."}},{"department":[{"_id":"181"}],"publication_status":"published","title":"Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics.","language":[{"iso":"eng"}],"date_updated":"2022-01-06T07:02:37Z","publisher":"Elsevier","author":[{"full_name":"Schumann, Jan H","first_name":"Jan H","last_name":"Schumann"},{"full_name":"Wünderlich, Nancy","first_name":"Nancy","id":"36392","last_name":"Wünderlich"},{"first_name":"Florian","full_name":"Wangenheim, Florian","last_name":"Wangenheim"}],"keyword":["Services","Remote services","Self-services","Technology mediation"],"publication":"Technovation","status":"public","date_created":"2018-11-16T09:43:45Z","volume":32,"article_type":"original","abstract":[{"lang":"eng","text":"The role of information and communication technology for economic growth has been emphasized repeatedly. Technological breakthroughs have generated new forms of services, such as self-services or remote services. Although these encounters are qualitatively different from traditional service provision, prior service management literature thus far had paid little attention to theory development and the systematization of technology-based service encounters. To fill this research gap, the present study outlines how new types of technology-based services fit into existing service typologies and provides an extension of existing frameworks to capture their unique characteristics. These insights in turn offer managerial implications and highlight open research questions."}],"user_id":"37741","citation":{"bibtex":"@article{Schumann_Wünderlich_Wangenheim_2012, title={Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics.}, volume={32}, number={2}, journal={Technovation}, publisher={Elsevier}, author={Schumann, Jan H and Wünderlich, Nancy and Wangenheim, Florian}, year={2012}, pages={133–143} }","mla":"Schumann, Jan H., et al. “Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics.” Technovation, vol. 32, no. 2, Elsevier, 2012, pp. 133–43.","ama":"Schumann JH, Wünderlich N, Wangenheim F. Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics. Technovation. 2012;32(2):133-143.","apa":"Schumann, J. H., Wünderlich, N., & Wangenheim, F. (2012). Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics. Technovation, 32(2), 133–143.","chicago":"Schumann, Jan H, Nancy Wünderlich, and Florian Wangenheim. “Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics.” Technovation 32, no. 2 (2012): 133–43.","ieee":"J. H. Schumann, N. Wünderlich, and F. Wangenheim, “Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics.,” Technovation, vol. 32, no. 2, pp. 133–143, 2012.","short":"J.H. Schumann, N. Wünderlich, F. Wangenheim, Technovation 32 (2012) 133–143."},"type":"journal_article","year":"2012","page":"133-143","intvolume":" 32","_id":"5718","issue":"2"},{"abstract":[{"text":"To optimize the ultrasound irradiation for cavitation based ultrasound applications like sonochemistry or ultrasound cleaning, the correlation between cavitation intensity and the resulting effect on the process is of interest. Furthermore, changing conditions like temperature and pressure result in varying acoustic properties of the liquid. That might necessitate an adaption of the ultrasound irradiation. To detect such changes during operation, process monitoring is desired. Labor intensive processes, that might be carried out for several hours, also require process monitoring to increase their reliability by detection of changes or malfunctions during operation. In some applications cavitation detection and monitoring can be achieved by the application of sensors in the sound field. Though the application of sensors is possible, this necessitates modifications on the system and the sensor might disturb the sound field. In other applications harsh, process conditions prohibit the application of sensors in the sound field. Therefore alternative techniques for cavitation detection and monitoring are desired. The applicability of an external microphone and a self-sensing ultrasound transducer for cavitation detection were experimentally investigated. Both methods were found to be suitable and easily applicable.","lang":"eng"}],"title":"Non-perturbing cavitation detection / monitoring in sonochemical reactors","user_id":"55222","author":[{"last_name":"Bornmann","full_name":"Bornmann, Peter","first_name":"Peter"},{"full_name":"Hemsel, Tobias","first_name":"Tobias","id":"210","last_name":"Hemsel"},{"first_name":"Walter","full_name":"Sextro, Walter","last_name":"Sextro","id":"21220"},{"last_name":"Maeda","first_name":"Takafumi","full_name":"Maeda, Takafumi"},{"last_name":"Morita","full_name":"Morita, Takeshi","first_name":"Takeshi"}],"quality_controlled":"1","publication":"Ultrasonics Symposium (IUS), 2012 IEEE International","department":[{"_id":"151"}],"keyword":["cavitation","chemical reactors","microphones","process monitoring","reliability","ultrasonic applications","ultrasonic waves","acoustic properties","cavitation based ultrasound applications","cavitation intensity","change detection reliability","external microphone","malfunction detection reliability","nonperturbing cavitation detection","nonperturbing cavitation monitoring","process monitoring","self-sensing ultrasound transducer","sonochemical reactors","sonochemistry","ultrasound cleaning","ultrasound irradiation","Acoustics","Liquids","Monitoring","Sensors","Sonar equipment","Transducers","Ultrasonic imaging"],"publication_identifier":{"issn":["1948-5719"]},"status":"public","date_created":"2019-05-13T13:18:49Z","date_updated":"2022-01-06T07:04:20Z","_id":"9783","doi":"10.1109/ULTSYM.2012.0284","type":"conference","citation":{"short":"P. Bornmann, T. Hemsel, W. Sextro, T. Maeda, T. Morita, in: Ultrasonics Symposium (IUS), 2012 IEEE International, 2012, pp. 1141–1144.","ieee":"P. Bornmann, T. Hemsel, W. Sextro, T. Maeda, and T. Morita, “Non-perturbing cavitation detection / monitoring in sonochemical reactors,” in Ultrasonics Symposium (IUS), 2012 IEEE International, 2012, pp. 1141–1144.","ama":"Bornmann P, Hemsel T, Sextro W, Maeda T, Morita T. Non-perturbing cavitation detection / monitoring in sonochemical reactors. In: Ultrasonics Symposium (IUS), 2012 IEEE International. ; 2012:1141-1144. doi:10.1109/ULTSYM.2012.0284","apa":"Bornmann, P., Hemsel, T., Sextro, W., Maeda, T., & Morita, T. (2012). Non-perturbing cavitation detection / monitoring in sonochemical reactors. In Ultrasonics Symposium (IUS), 2012 IEEE International (pp. 1141–1144). https://doi.org/10.1109/ULTSYM.2012.0284","chicago":"Bornmann, Peter, Tobias Hemsel, Walter Sextro, Takafumi Maeda, and Takeshi Morita. “Non-Perturbing Cavitation Detection / Monitoring in Sonochemical Reactors.” In Ultrasonics Symposium (IUS), 2012 IEEE International, 1141–44, 2012. https://doi.org/10.1109/ULTSYM.2012.0284.","bibtex":"@inproceedings{Bornmann_Hemsel_Sextro_Maeda_Morita_2012, title={Non-perturbing cavitation detection / monitoring in sonochemical reactors}, DOI={10.1109/ULTSYM.2012.0284}, booktitle={Ultrasonics Symposium (IUS), 2012 IEEE International}, author={Bornmann, Peter and Hemsel, Tobias and Sextro, Walter and Maeda, Takafumi and Morita, Takeshi}, year={2012}, pages={1141–1144} }","mla":"Bornmann, Peter, et al. “Non-Perturbing Cavitation Detection / Monitoring in Sonochemical Reactors.” Ultrasonics Symposium (IUS), 2012 IEEE International, 2012, pp. 1141–44, doi:10.1109/ULTSYM.2012.0284."},"year":"2012","page":"1141-1144","language":[{"iso":"eng"}]},{"abstract":[{"text":"Self-optimizing mechatronic systems are a new class of technical systems. On the one hand, new challenges regarding dependability arise from their additional complexity and adaptivity. On the other hand, their abilities enable new concepts and methods to improve the dependability of mechatronic systems. This paper introduces a multi-level dependability concept for selfoptimizing mechatronic systems and shows how probabilistic planning can be used to improve the availability and reliability of systems in the operating phase. The general idea to improve the availability of autonomous systems by applying probabilistic planning methods to avoid energy shortages is exemplified on the example of an innovative railway vehicle.","lang":"eng"}],"user_id":"55222","title":"Probabilistic Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management of an Autonomous Railway Vehicle","department":[{"_id":"151"}],"publication":"Journal of Robotics and Mechatronics","keyword":["self-optimizing systems","dependability","probabilistic planning","energy management"],"quality_controlled":"1","author":[{"full_name":"Klöpper, Benjamin","first_name":"Benjamin","last_name":"Klöpper"},{"full_name":"Sondermann-Wölke, Christoph","first_name":"Christoph","last_name":"Sondermann-Wölke"},{"full_name":"Romaus, Christoph","first_name":"Christoph","last_name":"Romaus"}],"date_created":"2019-05-13T13:23:45Z","status":"public","volume":24,"_id":"9786","date_updated":"2022-01-06T07:04:20Z","intvolume":" 24","issue":"1","language":[{"iso":"eng"}],"page":"5-15","type":"journal_article","citation":{"apa":"Klöpper, B., Sondermann-Wölke, C., & Romaus, C. (2012). Probabilistic Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management of an Autonomous Railway Vehicle. Journal of Robotics and Mechatronics, 24(1), 5–15.","ama":"Klöpper B, Sondermann-Wölke C, Romaus C. Probabilistic Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management of an Autonomous Railway Vehicle. Journal of Robotics and Mechatronics. 2012;24(1):5-15.","chicago":"Klöpper, Benjamin, Christoph Sondermann-Wölke, and Christoph Romaus. “Probabilistic Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management of an Autonomous Railway Vehicle.” Journal of Robotics and Mechatronics 24, no. 1 (2012): 5–15.","mla":"Klöpper, Benjamin, et al. “Probabilistic Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management of an Autonomous Railway Vehicle.” Journal of Robotics and Mechatronics, vol. 24, no. 1, 2012, pp. 5–15.","bibtex":"@article{Klöpper_Sondermann-Wölke_Romaus_2012, title={Probabilistic Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management of an Autonomous Railway Vehicle}, volume={24}, number={1}, journal={Journal of Robotics and Mechatronics}, author={Klöpper, Benjamin and Sondermann-Wölke, Christoph and Romaus, Christoph}, year={2012}, pages={5–15} }","short":"B. Klöpper, C. Sondermann-Wölke, C. Romaus, Journal of Robotics and Mechatronics 24 (2012) 5–15.","ieee":"B. Klöpper, C. Sondermann-Wölke, and C. Romaus, “Probabilistic Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management of an Autonomous Railway Vehicle,” Journal of Robotics and Mechatronics, vol. 24, no. 1, pp. 5–15, 2012."},"year":"2012"},{"status":"public","date_created":"2019-07-12T05:29:08Z","author":[{"first_name":"Florian","full_name":"Jacob, Florian","last_name":"Jacob"},{"id":"460","last_name":"Schmalenstroeer","full_name":"Schmalenstroeer, Joerg","first_name":"Joerg"},{"first_name":"Reinhold","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach","id":"242"}],"quality_controlled":"1","department":[{"_id":"54"}],"keyword":["Unsupervised","geometry calibration","microphone arrays","position self-calibration"],"publication":"International Workshop on Acoustic Signal Enhancement (IWAENC 2012)","title":"Microphone Array Position Self-Calibration from Reverberant Speech Input","user_id":"460","related_material":{"link":[{"relation":"supplementary_material","description":"Video","url":"https://groups.uni-paderborn.de/nt/pubs/2012/Microphine_Array_Position_Self-Calibration_from_Reverberant_Speech_Input.mp4"},{"relation":"supplementary_material","description":"Poster","url":"https://groups.uni-paderborn.de/nt/pubs/2012/JaScHa12_Poster.pdf"},{"description":"Demonstrator","relation":"supplementary_material","url":"https://groups.uni-paderborn.de/nt/pubs/2012/JaScHa12_Demonstrator.pdf"}]},"abstract":[{"text":"In this paper we propose an approach to retrieve the geometry of an acoustic sensor network consisting of spatially distributed microphone arrays from unconstrained speech input. The calibration relies on Direction of Arrival (DoA) measurements which do not require a clock synchronization among the sensor nodes. The calibration problem is formulated as a cost function optimization task, which minimizes the squared differences between measured and predicted observations and additionally avoids the existence of minima that correspond to mirrored versions of the actual sensor orientations. Further, outlier measurements caused by reverberation are mitigated by a Random Sample Consensus (RANSAC) approach. The experimental results show a mean positioning error of at most 25 cm even in highly reverberant environments.","lang":"eng"}],"year":"2012","type":"conference","citation":{"short":"F. Jacob, J. Schmalenstroeer, R. Haeb-Umbach, in: International Workshop on Acoustic Signal Enhancement (IWAENC 2012), 2012.","ieee":"F. Jacob, J. Schmalenstroeer, and R. Haeb-Umbach, “Microphone Array Position Self-Calibration from Reverberant Speech Input,” 2012.","ama":"Jacob F, Schmalenstroeer J, Haeb-Umbach R. Microphone Array Position Self-Calibration from Reverberant Speech Input. In: International Workshop on Acoustic Signal Enhancement (IWAENC 2012). ; 2012.","apa":"Jacob, F., Schmalenstroeer, J., & Haeb-Umbach, R. (2012). Microphone Array Position Self-Calibration from Reverberant Speech Input. International Workshop on Acoustic Signal Enhancement (IWAENC 2012).","chicago":"Jacob, Florian, Joerg Schmalenstroeer, and Reinhold Haeb-Umbach. “Microphone Array Position Self-Calibration from Reverberant Speech Input.” In International Workshop on Acoustic Signal Enhancement (IWAENC 2012), 2012.","bibtex":"@inproceedings{Jacob_Schmalenstroeer_Haeb-Umbach_2012, title={Microphone Array Position Self-Calibration from Reverberant Speech Input}, booktitle={International Workshop on Acoustic Signal Enhancement (IWAENC 2012)}, author={Jacob, Florian and Schmalenstroeer, Joerg and Haeb-Umbach, Reinhold}, year={2012} }","mla":"Jacob, Florian, et al. “Microphone Array Position Self-Calibration from Reverberant Speech Input.” International Workshop on Acoustic Signal Enhancement (IWAENC 2012), 2012."},"language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1","url":"https://groups.uni-paderborn.de/nt/pubs/2012/JaScHa12.pdf"}],"oa":"1","date_updated":"2023-10-26T08:10:52Z","_id":"11833"},{"_id":"46397","year":"2012","citation":{"chicago":"Brockhoff, Dimo, Tobias Wagner, and Heike Trautmann. “On the Properties of the R2 Indicator.” In Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation, 465–472. GECCO ’12. New York, NY, USA: Association for Computing Machinery, 2012. https://doi.org/10.1145/2330163.2330230.","ama":"Brockhoff D, Wagner T, Trautmann H. On the Properties of the R2 Indicator. In: Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation. GECCO ’12. Association for Computing Machinery; 2012:465–472. doi:10.1145/2330163.2330230","apa":"Brockhoff, D., Wagner, T., & Trautmann, H. (2012). On the Properties of the R2 Indicator. Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation, 465–472. https://doi.org/10.1145/2330163.2330230","mla":"Brockhoff, Dimo, et al. “On the Properties of the R2 Indicator.” Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation, Association for Computing Machinery, 2012, pp. 465–472, doi:10.1145/2330163.2330230.","bibtex":"@inproceedings{Brockhoff_Wagner_Trautmann_2012, place={New York, NY, USA}, series={GECCO ’12}, title={On the Properties of the R2 Indicator}, DOI={10.1145/2330163.2330230}, booktitle={Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation}, publisher={Association for Computing Machinery}, author={Brockhoff, Dimo and Wagner, Tobias and Trautmann, Heike}, year={2012}, pages={465–472}, collection={GECCO ’12} }","short":"D. Brockhoff, T. Wagner, H. Trautmann, in: Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation, Association for Computing Machinery, New York, NY, USA, 2012, pp. 465–472.","ieee":"D. Brockhoff, T. Wagner, and H. Trautmann, “On the Properties of the R2 Indicator,” in Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation, 2012, pp. 465–472, doi: 10.1145/2330163.2330230."},"type":"conference","page":"465–472","abstract":[{"text":"In multiobjective optimization, set-based performance indicators are commonly used to assess the quality of a Pareto front approximation. Based on the scalarization obtained by these indicators, a performance comparison of multiobjective optimization algorithms becomes possible. The R2 and the Hypervolume (HV) indicator represent two recommended approaches which have shown a correlated behavior in recent empirical studies. Whereas the HV indicator has been comprehensively analyzed in the last years, almost no studies on the R2 indicator exist. In this paper, we thus perform a comprehensive investigation of the properties of the R2 indicator in a theoretical and empirical way. The influence of the number and distribution of the weight vectors on the optimal distribution of μ solutions is analyzed. Based on a comparative analysis, specific characteristics and differences of the R2 and HV indicator are presented.","lang":"eng"}],"user_id":"15504","author":[{"full_name":"Brockhoff, Dimo","first_name":"Dimo","last_name":"Brockhoff"},{"last_name":"Wagner","full_name":"Wagner, Tobias","first_name":"Tobias"},{"first_name":"Heike","full_name":"Trautmann, Heike","orcid":"0000-0002-9788-8282","last_name":"Trautmann","id":"100740"}],"publisher":"Association for Computing Machinery","keyword":["hypervolume indicator","multiobjective optimization","performance assessment","r2 indicator"],"publication":"Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation","status":"public","date_created":"2023-08-04T15:52:42Z","date_updated":"2023-10-16T13:47:23Z","doi":"10.1145/2330163.2330230","series_title":"GECCO ’12","language":[{"iso":"eng"}],"place":"New York, NY, USA","title":"On the Properties of the R2 Indicator","department":[{"_id":"34"},{"_id":"819"}],"publication_identifier":{"isbn":["9781450311779"]}},{"department":[{"_id":"34"},{"_id":"819"}],"publication_identifier":{"isbn":["9781450311779"]},"place":"New York, NY, USA","title":"Algorithm Selection Based on Exploratory Landscape Analysis and Cost-Sensitive Learning","series_title":"GECCO ’12","language":[{"iso":"eng"}],"date_updated":"2023-10-16T13:48:48Z","doi":"10.1145/2330163.2330209","publisher":"Association for Computing Machinery","author":[{"last_name":"Bischl","full_name":"Bischl, Bernd","first_name":"Bernd"},{"full_name":"Mersmann, Olaf","first_name":"Olaf","last_name":"Mersmann"},{"id":"100740","last_name":"Trautmann","full_name":"Trautmann, Heike","orcid":"0000-0002-9788-8282","first_name":"Heike"},{"first_name":"Mike","full_name":"Preuß, Mike","last_name":"Preuß"}],"publication":"Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation","keyword":["machine learning","exploratory landscape analysis","fitness landscape","benchmarking","evolutionary optimization","bbob test set","algorithm selection"],"status":"public","date_created":"2023-08-04T15:51:56Z","abstract":[{"text":"The steady supply of new optimization methods makes the algorithm selection problem (ASP) an increasingly pressing and challenging task, specially for real-world black-box optimization problems. The introduced approach considers the ASP as a cost-sensitive classification task which is based on Exploratory Landscape Analysis. Low-level features gathered by systematic sampling of the function on the feasible set are used to predict a well-performing algorithm out of a given portfolio. Example-specific label costs are defined by the expected runtime of each candidate algorithm. We use one-sided support vector regression to solve this learning problem. The approach is illustrated by means of the optimization problems and algorithms of the BBOB’09/10 workshop.","lang":"eng"}],"user_id":"15504","citation":{"mla":"Bischl, Bernd, et al. “Algorithm Selection Based on Exploratory Landscape Analysis and Cost-Sensitive Learning.” Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation, Association for Computing Machinery, 2012, pp. 313–320, doi:10.1145/2330163.2330209.","bibtex":"@inproceedings{Bischl_Mersmann_Trautmann_Preuß_2012, place={New York, NY, USA}, series={GECCO ’12}, title={Algorithm Selection Based on Exploratory Landscape Analysis and Cost-Sensitive Learning}, DOI={10.1145/2330163.2330209}, booktitle={Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation}, publisher={Association for Computing Machinery}, author={Bischl, Bernd and Mersmann, Olaf and Trautmann, Heike and Preuß, Mike}, year={2012}, pages={313–320}, collection={GECCO ’12} }","apa":"Bischl, B., Mersmann, O., Trautmann, H., & Preuß, M. (2012). Algorithm Selection Based on Exploratory Landscape Analysis and Cost-Sensitive Learning. Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation, 313–320. https://doi.org/10.1145/2330163.2330209","ama":"Bischl B, Mersmann O, Trautmann H, Preuß M. Algorithm Selection Based on Exploratory Landscape Analysis and Cost-Sensitive Learning. In: Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation. GECCO ’12. Association for Computing Machinery; 2012:313–320. doi:10.1145/2330163.2330209","chicago":"Bischl, Bernd, Olaf Mersmann, Heike Trautmann, and Mike Preuß. “Algorithm Selection Based on Exploratory Landscape Analysis and Cost-Sensitive Learning.” In Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation, 313–320. GECCO ’12. New York, NY, USA: Association for Computing Machinery, 2012. https://doi.org/10.1145/2330163.2330209.","ieee":"B. Bischl, O. Mersmann, H. Trautmann, and M. Preuß, “Algorithm Selection Based on Exploratory Landscape Analysis and Cost-Sensitive Learning,” in Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation, 2012, pp. 313–320, doi: 10.1145/2330163.2330209.","short":"B. Bischl, O. Mersmann, H. Trautmann, M. Preuß, in: Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation, Association for Computing Machinery, New York, NY, USA, 2012, pp. 313–320."},"year":"2012","type":"conference","page":"313–320","_id":"46396"},{"date_created":"2023-08-04T15:58:22Z","status":"public","publication":"Proceedings of the 13th Annual Conference on Genetic and Evolutionary Computation","keyword":["exploratory landscape analysis","evolutionary optimization","fitness landscape","benchmarking","BBOB test set"],"publisher":"Association for Computing Machinery","author":[{"full_name":"Mersmann, Olaf","first_name":"Olaf","last_name":"Mersmann"},{"first_name":"Bernd","full_name":"Bischl, Bernd","last_name":"Bischl"},{"last_name":"Trautmann","id":"100740","first_name":"Heike","orcid":"0000-0002-9788-8282","full_name":"Trautmann, Heike"},{"first_name":"Mike","full_name":"Preuss, Mike","last_name":"Preuss"},{"first_name":"Claus","full_name":"Weihs, Claus","last_name":"Weihs"},{"first_name":"Günter","full_name":"Rudolph, Günter","last_name":"Rudolph"}],"user_id":"15504","abstract":[{"text":"Exploratory Landscape Analysis subsumes a number of techniques employed to obtain knowledge about the properties of an unknown optimization problem, especially insofar as these properties are important for the performance of optimization algorithms. Where in a first attempt, one could rely on high-level features designed by experts, we approach the problem from a different angle here, namely by using relatively cheap low-level computer generated features. Interestingly, very few features are needed to separate the BBOB problem groups and also for relating a problem to high-level, expert designed features, paving the way for automatic algorithm selection.","lang":"eng"}],"page":"829–836","type":"conference","year":"2011","citation":{"short":"O. Mersmann, B. Bischl, H. Trautmann, M. Preuss, C. Weihs, G. Rudolph, in: Proceedings of the 13th Annual Conference on Genetic and Evolutionary Computation, Association for Computing Machinery, New York, NY, USA, 2011, pp. 829–836.","ieee":"O. Mersmann, B. Bischl, H. Trautmann, M. Preuss, C. Weihs, and G. Rudolph, “Exploratory Landscape Analysis,” in Proceedings of the 13th Annual Conference on Genetic and Evolutionary Computation, 2011, pp. 829–836, doi: 10.1145/2001576.2001690.","chicago":"Mersmann, Olaf, Bernd Bischl, Heike Trautmann, Mike Preuss, Claus Weihs, and Günter Rudolph. “Exploratory Landscape Analysis.” In Proceedings of the 13th Annual Conference on Genetic and Evolutionary Computation, 829–836. GECCO ’11. New York, NY, USA: Association for Computing Machinery, 2011. https://doi.org/10.1145/2001576.2001690.","apa":"Mersmann, O., Bischl, B., Trautmann, H., Preuss, M., Weihs, C., & Rudolph, G. (2011). Exploratory Landscape Analysis. Proceedings of the 13th Annual Conference on Genetic and Evolutionary Computation, 829–836. https://doi.org/10.1145/2001576.2001690","ama":"Mersmann O, Bischl B, Trautmann H, Preuss M, Weihs C, Rudolph G. Exploratory Landscape Analysis. In: Proceedings of the 13th Annual Conference on Genetic and Evolutionary Computation. GECCO ’11. Association for Computing Machinery; 2011:829–836. doi:10.1145/2001576.2001690","mla":"Mersmann, Olaf, et al. “Exploratory Landscape Analysis.” Proceedings of the 13th Annual Conference on Genetic and Evolutionary Computation, Association for Computing Machinery, 2011, pp. 829–836, doi:10.1145/2001576.2001690.","bibtex":"@inproceedings{Mersmann_Bischl_Trautmann_Preuss_Weihs_Rudolph_2011, place={New York, NY, USA}, series={GECCO ’11}, title={Exploratory Landscape Analysis}, DOI={10.1145/2001576.2001690}, booktitle={Proceedings of the 13th Annual Conference on Genetic and Evolutionary Computation}, publisher={Association for Computing Machinery}, author={Mersmann, Olaf and Bischl, Bernd and Trautmann, Heike and Preuss, Mike and Weihs, Claus and Rudolph, Günter}, year={2011}, pages={829–836}, collection={GECCO ’11} }"},"_id":"46401","publication_identifier":{"isbn":["9781450305570"]},"department":[{"_id":"34"},{"_id":"819"}],"title":"Exploratory Landscape Analysis","place":"New York, NY, USA","language":[{"iso":"eng"}],"series_title":"GECCO ’11","doi":"10.1145/2001576.2001690","date_updated":"2023-10-16T13:54:34Z"},{"_id":"23858","date_updated":"2022-01-06T06:56:02Z","series_title":"SCSC '10","page":"133–140","type":"conference","citation":{"apa":"Kretzschmar, N., & Schöppner, V. (2010). Simulating Tightly Intermeshing, Co-Rotating Twin Screw Extruders with SIGMA. In Proceedings of the 2010 Summer Computer Simulation Conference (pp. 133–140). San Diego, CA, USA: Society for Computer Simulation International.","ama":"Kretzschmar N, Schöppner V. Simulating Tightly Intermeshing, Co-Rotating Twin Screw Extruders with SIGMA. In: Proceedings of the 2010 Summer Computer Simulation Conference. SCSC ’10. San Diego, CA, USA: Society for Computer Simulation International; 2010:133–140.","chicago":"Kretzschmar, Nils, and Volker Schöppner. “Simulating Tightly Intermeshing, Co-Rotating Twin Screw Extruders with SIGMA.” In Proceedings of the 2010 Summer Computer Simulation Conference, 133–140. SCSC ’10. San Diego, CA, USA: Society for Computer Simulation International, 2010.","bibtex":"@inproceedings{Kretzschmar_Schöppner_2010, place={San Diego, CA, USA}, series={SCSC ’10}, title={Simulating Tightly Intermeshing, Co-Rotating Twin Screw Extruders with SIGMA}, booktitle={Proceedings of the 2010 Summer Computer Simulation Conference}, publisher={Society for Computer Simulation International}, author={Kretzschmar, Nils and Schöppner, Volker}, year={2010}, pages={133–140}, collection={SCSC ’10} }","mla":"Kretzschmar, Nils, and Volker Schöppner. “Simulating Tightly Intermeshing, Co-Rotating Twin Screw Extruders with SIGMA.” Proceedings of the 2010 Summer Computer Simulation Conference, Society for Computer Simulation International, 2010, pp. 133–140.","short":"N. Kretzschmar, V. Schöppner, in: Proceedings of the 2010 Summer Computer Simulation Conference, Society for Computer Simulation International, San Diego, CA, USA, 2010, pp. 133–140.","ieee":"N. Kretzschmar and V. Schöppner, “Simulating Tightly Intermeshing, Co-Rotating Twin Screw Extruders with SIGMA,” in Proceedings of the 2010 Summer Computer Simulation Conference, 2010, pp. 133–140."},"year":"2010","language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"A large proportion of plastics today is compounded, which means the process from refining a raw material to the processable material. For this process compounding extruders are used which mostly involve tightly intermeshing, co-rotating twin screw extruders. These extruders consist of two closely spaced screws which rotate in the same direction and convey the raw material to the screw tip. These screws are surrounded by several barrel modules which heat or cool the material. As the whole design of the machine is modularly arranged the process behavior of a twin screw extruder depends for the main part on the arrangement of the screw and the barrel elements. Until today this arrangement and process optimization is conducted by experienced engineers and with the help of trial-and-error methods. Furthermore, theoretical models are used with which the behavior of the extruder is estimated. As these models are mostly very complex they are only made available with the realization in different software projects. One of the tools is called SIGMA. Within this paper SIGMA is introduced as a software to optimize a twin screw extruder. SIGMA supports the engineer already in the early stages of the extruder arrangement."}],"place":"San Diego, CA, USA","title":"Simulating Tightly Intermeshing, Co-Rotating Twin Screw Extruders with SIGMA","user_id":"15387","keyword":["process optimization","polymer engineering","compounding","twin screw extruder","simulation"],"department":[{"_id":"367"}],"publication":"Proceedings of the 2010 Summer Computer Simulation Conference","publisher":"Society for Computer Simulation International","author":[{"full_name":"Kretzschmar, Nils","first_name":"Nils","id":"15387","last_name":"Kretzschmar"},{"last_name":"Schöppner","id":"20530","first_name":"Volker","full_name":"Schöppner, Volker"}],"date_created":"2021-09-07T10:31:48Z","status":"public"},{"date_created":"2018-11-14T15:45:11Z","has_accepted_license":"1","status":"public","keyword":["Decision Support System","Algorithms","Optimization","Market Engineering"],"publication":"18th European Conference on Information Systems (ECIS 2010)","file_date_updated":"2018-12-13T15:19:40Z","author":[{"last_name":"Finkbeiner","full_name":"Finkbeiner, Josef","first_name":"Josef"},{"full_name":"Bodenstein, Christian","first_name":"Christian","last_name":"Bodenstein"},{"id":"72850","last_name":"Schryen","full_name":"Schryen, Guido","first_name":"Guido"},{"last_name":"Neumann","first_name":"Dirk","full_name":"Neumann, Dirk"}],"file":[{"file_name":"s1-ln7055316-1881058806-1939656818Hwf-1884822883IdV-5442784107055316PDF_HI0001.pdf","date_created":"2018-12-11T15:21:06Z","access_level":"open_access","file_size":171336,"creator":"hsiemes","file_id":"6188","date_updated":"2018-12-13T15:19:40Z","content_type":"application/pdf","relation":"main_file"}],"ddc":["000"],"user_id":"61579","extern":"1","abstract":[{"text":"In double-sided markets for computing resources an optimal allocation schedule among job offers and requests subject to relevant capacity constraints can be determined. With increasing storage demands and emerging storage services the question how to schedule storage jobs becomes more and more interesting. Since such scheduling problems are often in the class NP-complete an exact computation is not feasible in practice. On the other hand an approximation to the optimal solution can easily be found by means of using heuristics. The problem with this attempt is that the suggested solution may not be exactly optimal and is thus less satisfying. Considering the two above mentioned solution approaches one can clearly find a trade-off between the optimality of the solution and the efficiency to get to a solution at all. This work proposes to apply and combine heuristics in optimization to gain from both of their benefits while reducing the problematic aspects. Following this method it is assumed to get closer to the optimal solution in a shorter time compared to a full optimization.","lang":"eng"}],"year":"2010","type":"conference","citation":{"short":"J. Finkbeiner, C. Bodenstein, G. Schryen, D. Neumann, in: 18th European Conference on Information Systems (ECIS 2010), 2010.","ieee":"J. Finkbeiner, C. Bodenstein, G. Schryen, and D. Neumann, “Applying heuristic methods for job scheduling in storage markets,” in 18th European Conference on Information Systems (ECIS 2010), 2010.","apa":"Finkbeiner, J., Bodenstein, C., Schryen, G., & Neumann, D. (2010). Applying heuristic methods for job scheduling in storage markets. In 18th European Conference on Information Systems (ECIS 2010).","ama":"Finkbeiner J, Bodenstein C, Schryen G, Neumann D. Applying heuristic methods for job scheduling in storage markets. In: 18th European Conference on Information Systems (ECIS 2010). ; 2010.","chicago":"Finkbeiner, Josef, Christian Bodenstein, Guido Schryen, and Dirk Neumann. “Applying Heuristic Methods for Job Scheduling in Storage Markets.” In 18th European Conference on Information Systems (ECIS 2010), 2010.","mla":"Finkbeiner, Josef, et al. “Applying Heuristic Methods for Job Scheduling in Storage Markets.” 18th European Conference on Information Systems (ECIS 2010), 2010.","bibtex":"@inproceedings{Finkbeiner_Bodenstein_Schryen_Neumann_2010, title={Applying heuristic methods for job scheduling in storage markets}, booktitle={18th European Conference on Information Systems (ECIS 2010)}, author={Finkbeiner, Josef and Bodenstein, Christian and Schryen, Guido and Neumann, Dirk}, year={2010} }"},"_id":"5685","department":[{"_id":"277"}],"title":"Applying heuristic methods for job scheduling in storage markets","language":[{"iso":"eng"}],"oa":"1","date_updated":"2022-01-06T07:02:32Z"},{"doi":"10.1016/j.physe.2009.12.053","date_updated":"2022-01-06T07:01:09Z","language":[{"iso":"eng"}],"title":"Intentionally positioned self-assembled InAs quantum dots in an electroluminescent p–i–n junction diode","publication_status":"published","publication_identifier":{"issn":["1386-9477"]},"department":[{"_id":"15"},{"_id":"230"},{"_id":"35"},{"_id":"287"}],"issue":"10","intvolume":" 42","_id":"4551","page":"2749-2752","year":"2010","type":"journal_article","citation":{"short":"M. Mehta, D. Reuter, A. Melnikov, A.D. Wieck, S. Michaelis de Vasconcellos, T. Baumgarten, A. Zrenner, C. Meier, Physica E: Low-Dimensional Systems and Nanostructures 42 (2010) 2749–2752.","ieee":"M. Mehta et al., “Intentionally positioned self-assembled InAs quantum dots in an electroluminescent p–i–n junction diode,” Physica E: Low-dimensional Systems and Nanostructures, vol. 42, no. 10, pp. 2749–2752, 2010.","chicago":"Mehta, Minisha, Dirk Reuter, Alexander Melnikov, Andreas D. Wieck, Steffen Michaelis de Vasconcellos, Tim Baumgarten, Artur Zrenner, and Cedrik Meier. “Intentionally Positioned Self-Assembled InAs Quantum Dots in an Electroluminescent p–i–n Junction Diode.” Physica E: Low-Dimensional Systems and Nanostructures 42, no. 10 (2010): 2749–52. https://doi.org/10.1016/j.physe.2009.12.053.","ama":"Mehta M, Reuter D, Melnikov A, et al. Intentionally positioned self-assembled InAs quantum dots in an electroluminescent p–i–n junction diode. Physica E: Low-dimensional Systems and Nanostructures. 2010;42(10):2749-2752. doi:10.1016/j.physe.2009.12.053","apa":"Mehta, M., Reuter, D., Melnikov, A., Wieck, A. D., Michaelis de Vasconcellos, S., Baumgarten, T., … Meier, C. (2010). Intentionally positioned self-assembled InAs quantum dots in an electroluminescent p–i–n junction diode. Physica E: Low-Dimensional Systems and Nanostructures, 42(10), 2749–2752. https://doi.org/10.1016/j.physe.2009.12.053","bibtex":"@article{Mehta_Reuter_Melnikov_Wieck_Michaelis de Vasconcellos_Baumgarten_Zrenner_Meier_2010, title={Intentionally positioned self-assembled InAs quantum dots in an electroluminescent p–i–n junction diode}, volume={42}, DOI={10.1016/j.physe.2009.12.053}, number={10}, journal={Physica E: Low-dimensional Systems and Nanostructures}, publisher={Elsevier BV}, author={Mehta, Minisha and Reuter, Dirk and Melnikov, Alexander and Wieck, Andreas D. and Michaelis de Vasconcellos, Steffen and Baumgarten, Tim and Zrenner, Artur and Meier, Cedrik}, year={2010}, pages={2749–2752} }","mla":"Mehta, Minisha, et al. “Intentionally Positioned Self-Assembled InAs Quantum Dots in an Electroluminescent p–i–n Junction Diode.” Physica E: Low-Dimensional Systems and Nanostructures, vol. 42, no. 10, Elsevier BV, 2010, pp. 2749–52, doi:10.1016/j.physe.2009.12.053."},"user_id":"20798","abstract":[{"text":"An intentional positioning of optically active quantum dots using site-selective growth by a combination of molecular beam epitaxy (MBE) and focused ion beam (FIB) implantation in an all-ultra-high-vacuum (UHV) setup has been successfully demonstrated. A square array of periodic holes on GaAs substrate was fabricated with FIB of 30 keV ions followed by an in situ annealing step. Subsequently, the patterned holes were overgrown with an optimized amount of InAs in order to achieve site-selective growth of the QDs on the patterned holes. Under well-optimized conditions, a selectivity of single quantum dot growth in the patterned holes of 52% was achieved. Thereafter, carrier injection and subsequent radiative recombination from the positioned InAs/GaAs self-assembled QDs was investigated by embedding the QDs in the intrinsic part of a GaAs-based p–i–n junction device. Electroluminescence spectra taken at 77 K show interband transitions up to the fifth excited state from the QDs.","lang":"eng"}],"article_type":"original","date_created":"2018-09-20T12:42:40Z","status":"public","volume":42,"keyword":["Molecular beam epitaxy","Focused ion beam","Self-assembled quantum dot","Electroluminescence"],"publication":"Physica E: Low-dimensional Systems and Nanostructures","publisher":"Elsevier BV","author":[{"last_name":"Mehta","full_name":"Mehta, Minisha","first_name":"Minisha"},{"full_name":"Reuter, Dirk","first_name":"Dirk","id":"37763","last_name":"Reuter"},{"first_name":"Alexander","full_name":"Melnikov, Alexander","last_name":"Melnikov"},{"last_name":"Wieck","full_name":"Wieck, Andreas D.","first_name":"Andreas D."},{"last_name":"Michaelis de Vasconcellos","first_name":"Steffen","full_name":"Michaelis de Vasconcellos, Steffen"},{"last_name":"Baumgarten","full_name":"Baumgarten, Tim","first_name":"Tim"},{"last_name":"Zrenner","id":"606","first_name":"Artur","orcid":"0000-0002-5190-0944","full_name":"Zrenner, Artur"},{"last_name":"Meier","id":"20798","first_name":"Cedrik","full_name":"Meier, Cedrik","orcid":"https://orcid.org/0000-0002-3787-3572"}]},{"date_updated":"2022-01-06T07:04:19Z","_id":"9760","doi":"10.1109/INDIN.2010.5549490","language":[{"iso":"eng"}],"citation":{"bibtex":"@inproceedings{Sondermann-Wölke_Hemsel_Sextro_Gausemeier_Pook_2010, title={Guideline for the dependability-oriented design of self-optimizing systems}, DOI={10.1109/INDIN.2010.5549490}, booktitle={Industrial Informatics (INDIN), 2010 8th IEEE International Conference on}, author={Sondermann-Wölke, Christoph and Hemsel, Tobias and Sextro, Walter and Gausemeier, Jürgen and Pook, Sebastian}, year={2010}, pages={739–744} }","mla":"Sondermann-Wölke, Christoph, et al. “Guideline for the Dependability-Oriented Design of Self-Optimizing Systems.” Industrial Informatics (INDIN), 2010 8th IEEE International Conference On, 2010, pp. 739–44, doi:10.1109/INDIN.2010.5549490.","chicago":"Sondermann-Wölke, Christoph, Tobias Hemsel, Walter Sextro, Jürgen Gausemeier, and Sebastian Pook. “Guideline for the Dependability-Oriented Design of Self-Optimizing Systems.” In Industrial Informatics (INDIN), 2010 8th IEEE International Conference On, 739–44, 2010. https://doi.org/10.1109/INDIN.2010.5549490.","ama":"Sondermann-Wölke C, Hemsel T, Sextro W, Gausemeier J, Pook S. Guideline for the dependability-oriented design of self-optimizing systems. In: Industrial Informatics (INDIN), 2010 8th IEEE International Conference On. ; 2010:739-744. doi:10.1109/INDIN.2010.5549490","apa":"Sondermann-Wölke, C., Hemsel, T., Sextro, W., Gausemeier, J., & Pook, S. (2010). Guideline for the dependability-oriented design of self-optimizing systems. In Industrial Informatics (INDIN), 2010 8th IEEE International Conference on (pp. 739–744). https://doi.org/10.1109/INDIN.2010.5549490","ieee":"C. Sondermann-Wölke, T. Hemsel, W. Sextro, J. Gausemeier, and S. Pook, “Guideline for the dependability-oriented design of self-optimizing systems,” in Industrial Informatics (INDIN), 2010 8th IEEE International Conference on, 2010, pp. 739–744.","short":"C. Sondermann-Wölke, T. Hemsel, W. Sextro, J. Gausemeier, S. Pook, in: Industrial Informatics (INDIN), 2010 8th IEEE International Conference On, 2010, pp. 739–744."},"year":"2010","type":"conference","page":"739 -744","abstract":[{"lang":"eng","text":"Self-optimizing systems are able to adapt their behavior autonomously according to their current self-determined objectives. Unforeseen influences could lead to dependability-critical behavior of the system. Methods are required which secure self-optimizing systems during operation. These methods to increase the dependability of the system should already be taken into consideration in the design process. This paper presents a guideline for the dependability-oriented design of self-optimizing systems, which integrates established classical methods like failure mode and effects analysis as well as methods based on self-optimization. On the one hand self-optimization is used to increase the dependability of the system by integrating objectives like safety, availability, and reliability to the objectives of the system. On the other hand methods are required to ensure the self-optimization itself. As basis for this guideline serves the principle solution of the system. The six phases of the guideline extend the design process and lead to an enhanced principle solution. Additionally, the guideline illustrates phases to implement and validate the self-optimizing system. The proposed guideline is applied to an innovative rail-bound vehicle, called RailCab, which is equipped with self-optimizing function modules."}],"user_id":"55222","title":"Guideline for the dependability-oriented design of self-optimizing systems","quality_controlled":"1","author":[{"first_name":"Christoph","full_name":"Sondermann-Wölke, Christoph","last_name":"Sondermann-Wölke"},{"full_name":"Hemsel, Tobias","first_name":"Tobias","id":"210","last_name":"Hemsel"},{"id":"21220","last_name":"Sextro","full_name":"Sextro, Walter","first_name":"Walter"},{"last_name":"Gausemeier","full_name":"Gausemeier, Jürgen","first_name":"Jürgen"},{"last_name":"Pook","first_name":"Sebastian","full_name":"Pook, Sebastian"}],"publication":"Industrial Informatics (INDIN), 2010 8th IEEE International Conference on","department":[{"_id":"151"}],"keyword":["RailCab","dependability-critical behavior","dependability-oriented design","failure mode","rail-bound vehicle","secure self-optimizing systems","self-optimizing function modules","optimisation","railways","self-adjusting systems"],"status":"public","date_created":"2019-05-13T10:25:26Z"},{"language":[{"iso":"eng"}],"page":"1 -6","type":"conference","citation":{"ieee":"C. Sondermann-Wölke, J. Geisler, and W. Sextro, “Increasing the reliability of a self-optimizing railway guidance system,” in Reliability and Maintainability Symposium (RAMS), 2010 Proceedings - Annual, 2010, pp. 1–6.","short":"C. Sondermann-Wölke, J. Geisler, W. Sextro, in: Reliability and Maintainability Symposium (RAMS), 2010 Proceedings - Annual, 2010, pp. 1–6.","bibtex":"@inproceedings{Sondermann-Wölke_Geisler_Sextro_2010, title={Increasing the reliability of a self-optimizing railway guidance system}, DOI={10.1109/RAMS.2010.5448080}, booktitle={Reliability and Maintainability Symposium (RAMS), 2010 Proceedings - Annual}, author={Sondermann-Wölke, Christoph and Geisler, Jens and Sextro, Walter}, year={2010}, pages={1–6} }","mla":"Sondermann-Wölke, Christoph, et al. “Increasing the Reliability of a Self-Optimizing Railway Guidance System.” Reliability and Maintainability Symposium (RAMS), 2010 Proceedings - Annual, 2010, pp. 1–6, doi:10.1109/RAMS.2010.5448080.","apa":"Sondermann-Wölke, C., Geisler, J., & Sextro, W. (2010). Increasing the reliability of a self-optimizing railway guidance system. In Reliability and Maintainability Symposium (RAMS), 2010 Proceedings - Annual (pp. 1–6). https://doi.org/10.1109/RAMS.2010.5448080","ama":"Sondermann-Wölke C, Geisler J, Sextro W. Increasing the reliability of a self-optimizing railway guidance system. In: Reliability and Maintainability Symposium (RAMS), 2010 Proceedings - Annual. ; 2010:1-6. doi:10.1109/RAMS.2010.5448080","chicago":"Sondermann-Wölke, Christoph, Jens Geisler, and Walter Sextro. “Increasing the Reliability of a Self-Optimizing Railway Guidance System.” In Reliability and Maintainability Symposium (RAMS), 2010 Proceedings - Annual, 1–6, 2010. https://doi.org/10.1109/RAMS.2010.5448080."},"year":"2010","doi":"10.1109/RAMS.2010.5448080","_id":"9763","date_updated":"2022-01-06T07:04:19Z","date_created":"2019-05-13T10:35:39Z","status":"public","publication_identifier":{"issn":["0149-144X"]},"keyword":["availability","dependability concept","multilevel dependability concept","railway vehicle","reliability","self optimizing active guidance system","self optimizing railway guidance system","situation classification","system behavior monitoring","optimal control","railways","reliability theory","self-adjusting systems"],"publication":"Reliability and Maintainability Symposium (RAMS), 2010 Proceedings - Annual","department":[{"_id":"151"}],"author":[{"first_name":"Christoph","full_name":"Sondermann-Wölke, Christoph","last_name":"Sondermann-Wölke"},{"last_name":"Geisler","full_name":"Geisler, Jens","first_name":"Jens"},{"last_name":"Sextro","id":"21220","first_name":"Walter","full_name":"Sextro, Walter"}],"quality_controlled":"1","user_id":"55222","title":"Increasing the reliability of a self-optimizing railway guidance system","abstract":[{"lang":"eng","text":"Recent advances in information processing enable new kinds of technical systems, called self-optimizing systems. These systems are able to adapt their objectives and their behavior according to the current situation and influences autonomously. This behavior adaptation is non-deterministic and hence self-optimization is a risk to the system, e.g. if the result of the self-optimization process does not match the suddenly changed situation. In contrary, self-optimization could be used to increase the dependability by pursuing objectives like reliability and availability. In our preceding publications we introduced the so called multi-level dependability concept to cope with this new kind of systems (cf. [6]). This concept comprises the monitoring of the system behavior, the classification of the current situation, and the selection of the appropriate measure, if reliability limits are exceeded. In this paper we present for the first time experimental results. The dependability concept is implemented in the self-optimizing active guidance system of a railway vehicle. The test drives illustrate clearly that the proposed concept is able to cope with, e.g., sensor failures, and is able to increase the reliability and availability of the active guidance module."}]},{"user_id":"15504","title":"Benchmarking Evolutionary Algorithms: Towards Exploratory Landscape Analysis","place":"Berlin, Heidelberg","abstract":[{"lang":"eng","text":"We present methods to answer two basic questions that arise when benchmarking optimization algorithms. The first one is: which algorithm is the ’best’ one? and the second one: which algorithm should I use for my real world problem? Both are connected and neither is easy to answer. We present methods which can be used to analyse the raw data of a benchmark experiment and derive some insight regarding the answers to these questions. We employ the presented methods to analyse the BBOB’09 benchmark results and present some initial findings."}],"status":"public","date_created":"2023-08-04T16:02:28Z","publication_identifier":{"isbn":["3642158439"]},"publisher":"Springer-Verlag","author":[{"last_name":"Mersmann","first_name":"Olaf","full_name":"Mersmann, Olaf"},{"last_name":"Preuss","full_name":"Preuss, Mike","first_name":"Mike"},{"id":"100740","last_name":"Trautmann","orcid":"0000-0002-9788-8282","full_name":"Trautmann, Heike","first_name":"Heike"}],"department":[{"_id":"34"},{"_id":"819"}],"keyword":["benchmarking","multidimensional scaling","consensus ranking","evolutionary optimization","BBOB test set"],"publication":"Proceedings of the 11th International Conference on Parallel Problem Solving from Nature: Part I","_id":"46405","date_updated":"2023-10-16T13:55:43Z","language":[{"iso":"eng"}],"year":"2010","citation":{"short":"O. Mersmann, M. Preuss, H. Trautmann, in: Proceedings of the 11th International Conference on Parallel Problem Solving from Nature: Part I, Springer-Verlag, Berlin, Heidelberg, 2010, pp. 73–82.","ieee":"O. Mersmann, M. Preuss, and H. Trautmann, “Benchmarking Evolutionary Algorithms: Towards Exploratory Landscape Analysis,” in Proceedings of the 11th International Conference on Parallel Problem Solving from Nature: Part I, 2010, pp. 73–82.","chicago":"Mersmann, Olaf, Mike Preuss, and Heike Trautmann. “Benchmarking Evolutionary Algorithms: Towards Exploratory Landscape Analysis.” In Proceedings of the 11th International Conference on Parallel Problem Solving from Nature: Part I, 73–82. PPSN’10. Berlin, Heidelberg: Springer-Verlag, 2010.","ama":"Mersmann O, Preuss M, Trautmann H. Benchmarking Evolutionary Algorithms: Towards Exploratory Landscape Analysis. In: Proceedings of the 11th International Conference on Parallel Problem Solving from Nature: Part I. PPSN’10. Springer-Verlag; 2010:73–82.","apa":"Mersmann, O., Preuss, M., & Trautmann, H. (2010). Benchmarking Evolutionary Algorithms: Towards Exploratory Landscape Analysis. Proceedings of the 11th International Conference on Parallel Problem Solving from Nature: Part I, 73–82.","bibtex":"@inproceedings{Mersmann_Preuss_Trautmann_2010, place={Berlin, Heidelberg}, series={PPSN’10}, title={Benchmarking Evolutionary Algorithms: Towards Exploratory Landscape Analysis}, booktitle={Proceedings of the 11th International Conference on Parallel Problem Solving from Nature: Part I}, publisher={Springer-Verlag}, author={Mersmann, Olaf and Preuss, Mike and Trautmann, Heike}, year={2010}, pages={73–82}, collection={PPSN’10} }","mla":"Mersmann, Olaf, et al. “Benchmarking Evolutionary Algorithms: Towards Exploratory Landscape Analysis.” Proceedings of the 11th International Conference on Parallel Problem Solving from Nature: Part I, Springer-Verlag, 2010, pp. 73–82."},"type":"conference","page":"73–82","series_title":"PPSN’10"},{"doi":"10.1109/CICA.2009.4982790","date_updated":"2022-01-06T07:04:19Z","_id":"9736","type":"conference","year":"2009","citation":{"chicago":"Klöpper, Benjamin, Christoph Sondermann-Wölke, Christoph Romaus, and Henner Vöcking. “Probabilistic Planning Integrated in a Multi-Level Dependability Concept for Mechatronic Systems.” In Computational Intelligence in Control and Automation, 2009. CICA 2009. IEEE Symposium On, 104–11, 2009. https://doi.org/10.1109/CICA.2009.4982790.","apa":"Klöpper, B., Sondermann-Wölke, C., Romaus, C., & Vöcking, H. (2009). Probabilistic planning integrated in a multi-level dependability concept for mechatronic systems. In Computational Intelligence in Control and Automation, 2009. CICA 2009. IEEE Symposium on (pp. 104–111). https://doi.org/10.1109/CICA.2009.4982790","ama":"Klöpper B, Sondermann-Wölke C, Romaus C, Vöcking H. Probabilistic planning integrated in a multi-level dependability concept for mechatronic systems. In: Computational Intelligence in Control and Automation, 2009. CICA 2009. IEEE Symposium On. ; 2009:104-111. doi:10.1109/CICA.2009.4982790","mla":"Klöpper, Benjamin, et al. “Probabilistic Planning Integrated in a Multi-Level Dependability Concept for Mechatronic Systems.” Computational Intelligence in Control and Automation, 2009. CICA 2009. IEEE Symposium On, 2009, pp. 104–11, doi:10.1109/CICA.2009.4982790.","bibtex":"@inproceedings{Klöpper_Sondermann-Wölke_Romaus_Vöcking_2009, title={Probabilistic planning integrated in a multi-level dependability concept for mechatronic systems}, DOI={10.1109/CICA.2009.4982790}, booktitle={Computational Intelligence in Control and Automation, 2009. CICA 2009. IEEE Symposium on}, author={Klöpper, Benjamin and Sondermann-Wölke, Christoph and Romaus, Christoph and Vöcking, Henner}, year={2009}, pages={104–111} }","short":"B. Klöpper, C. Sondermann-Wölke, C. Romaus, H. Vöcking, in: Computational Intelligence in Control and Automation, 2009. CICA 2009. IEEE Symposium On, 2009, pp. 104–111.","ieee":"B. Klöpper, C. Sondermann-Wölke, C. Romaus, and H. Vöcking, “Probabilistic planning integrated in a multi-level dependability concept for mechatronic systems,” in Computational Intelligence in Control and Automation, 2009. CICA 2009. IEEE Symposium on, 2009, pp. 104–111."},"page":"104 -111","language":[{"iso":"eng"}],"title":"Probabilistic planning integrated in a multi-level dependability concept for mechatronic systems","user_id":"55222","abstract":[{"lang":"eng","text":"Self-optimizing mechatronic systems are a new class of technical systems. On the one hand, new challenges regarding dependability arise from their additional complexity and adaptivity. On the other hand, their abilities enable new concepts and methods to improve the dependability of mechatronic systems. This paper introduces a multi-level dependability concept for self-optimizing mechatronic systems and shows how planning can be used to improve the availability and reliability of systems in the operating stages."}],"status":"public","date_created":"2019-05-13T09:03:57Z","quality_controlled":"1","author":[{"last_name":"Klöpper","first_name":"Benjamin","full_name":"Klöpper, Benjamin"},{"last_name":"Sondermann-Wölke","full_name":"Sondermann-Wölke, Christoph","first_name":"Christoph"},{"last_name":"Romaus","full_name":"Romaus, Christoph","first_name":"Christoph"},{"full_name":"Vöcking, Henner","first_name":"Henner","last_name":"Vöcking"}],"department":[{"_id":"151"}],"keyword":["multilevel dependability concept","probabilistic planning","self-optimizing mechatronic systems","systems reliability","mechatronics","planning (artificial intelligence)","self-adjusting systems"],"publication":"Computational Intelligence in Control and Automation, 2009. CICA 2009. IEEE Symposium on"},{"department":[{"_id":"151"}],"publication":"Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD '09. Computation World:","keyword":["condition monitoring","mechatronic systems","rail bound vehicle","rail guidance module","self-optimization","self-optimizing function modules","condition monitoring","mechatronics","railway rolling stock","self-adjusting systems"],"author":[{"full_name":"Sondermann-Wölke, Christoph","first_name":"Christoph","last_name":"Sondermann-Wölke"},{"last_name":"Sextro","id":"21220","first_name":"Walter","full_name":"Sextro, Walter"}],"date_created":"2019-05-13T09:31:52Z","status":"public","abstract":[{"lang":"eng","text":"New mechatronic systems, called self-optimizing systems, are able to adapt their behavior according to environmental, user and system specific influences. Self-optimizing systems are complex and due to their non-deterministic behavior comprise hidden risks, which cannot be foreseen in the design phase of the system. Therefore, this paper presents modifications of the current condition monitoring policy, to be able to cope with this new kind of systems. Beside avoiding critical situations evoked by self-optimization, the proposed concept uses self-optimization to increase the dependability of the system. In this case, the concept is applied to the active guidance module of an innovative rail-bound vehicle."}],"user_id":"55222","title":"Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules","language":[{"iso":"eng"}],"page":"15 -20","type":"conference","year":"2009","citation":{"mla":"Sondermann-Wölke, Christoph, and Walter Sextro. “Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules.” Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World:, 2009, pp. 15–20, doi:10.1109/ComputationWorld.2009.47.","bibtex":"@inproceedings{Sondermann-Wölke_Sextro_2009, title={Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules}, DOI={10.1109/ComputationWorld.2009.47}, booktitle={Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World:}, author={Sondermann-Wölke, Christoph and Sextro, Walter}, year={2009}, pages={15–20} }","chicago":"Sondermann-Wölke, Christoph, and Walter Sextro. “Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules.” In Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World:, 15–20, 2009. https://doi.org/10.1109/ComputationWorld.2009.47.","apa":"Sondermann-Wölke, C., & Sextro, W. (2009). Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules. In Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World: (pp. 15–20). https://doi.org/10.1109/ComputationWorld.2009.47","ama":"Sondermann-Wölke C, Sextro W. Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules. In: Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World: ; 2009:15-20. doi:10.1109/ComputationWorld.2009.47","ieee":"C. Sondermann-Wölke and W. Sextro, “Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules,” in Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World:, 2009, pp. 15–20.","short":"C. Sondermann-Wölke, W. Sextro, in: Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World:, 2009, pp. 15–20."},"date_updated":"2022-01-06T07:04:19Z","_id":"9742","doi":"10.1109/ComputationWorld.2009.47"},{"date_updated":"2022-01-06T07:04:16Z","_id":"9576","doi":"10.1109/FREQ.2008.4622963","type":"conference","year":"2008","citation":{"apa":"Uribe, D. O., Stroop, R., Hemsel, T., & Wallaschek, J. (2008). Development of a biomedical tissue differentiation system using piezoelectric actuators. In Frequency Control Symposium, 2008 IEEE International (pp. 91–94). https://doi.org/10.1109/FREQ.2008.4622963","ama":"Uribe DO, Stroop R, Hemsel T, Wallaschek J. Development of a biomedical tissue differentiation system using piezoelectric actuators. In: Frequency Control Symposium, 2008 IEEE International. ; 2008:91-94. doi:10.1109/FREQ.2008.4622963","chicago":"Uribe, David Oliva, Ralf Stroop, Tobias Hemsel, and Jörg Wallaschek. “Development of a Biomedical Tissue Differentiation System Using Piezoelectric Actuators.” In Frequency Control Symposium, 2008 IEEE International, 91–94, 2008. https://doi.org/10.1109/FREQ.2008.4622963.","bibtex":"@inproceedings{Uribe_Stroop_Hemsel_Wallaschek_2008, title={Development of a biomedical tissue differentiation system using piezoelectric actuators}, DOI={10.1109/FREQ.2008.4622963}, booktitle={Frequency Control Symposium, 2008 IEEE International}, author={Uribe, David Oliva and Stroop, Ralf and Hemsel, Tobias and Wallaschek, Jörg}, year={2008}, pages={91–94} }","mla":"Uribe, David Oliva, et al. “Development of a Biomedical Tissue Differentiation System Using Piezoelectric Actuators.” Frequency Control Symposium, 2008 IEEE International, 2008, pp. 91–94, doi:10.1109/FREQ.2008.4622963.","short":"D.O. Uribe, R. Stroop, T. Hemsel, J. Wallaschek, in: Frequency Control Symposium, 2008 IEEE International, 2008, pp. 91–94.","ieee":"D. O. Uribe, R. Stroop, T. Hemsel, and J. Wallaschek, “Development of a biomedical tissue differentiation system using piezoelectric actuators,” in Frequency Control Symposium, 2008 IEEE International, 2008, pp. 91–94."},"page":"91-94","language":[{"iso":"eng"}],"abstract":[{"text":"In neurosurgery, delineation of tumor boundaries during resection of brain tumors is of substantial relevance. During operation distinction between tumor and healthy tissue rely on the abilities of the surgeon based on visual and tactile differentiation. In this paper a high sensitivity actuator-sensor system using a piezoelectric bimorph is presented. Frequency shift and transfer function of the bimorphpsilas voltages are detected and evaluated. Sensorpsilas sensitivity is evaluated using two frequency controls strategies: A phase-locked loop (PLL) and a self-oscillating circuit. Results of measurements conducted on gel-phantoms are presented and discussed.","lang":"eng"}],"title":"Development of a biomedical tissue differentiation system using piezoelectric actuators","user_id":"55222","quality_controlled":"1","author":[{"last_name":"Uribe","full_name":"Uribe, David Oliva","first_name":"David Oliva"},{"last_name":"Stroop","full_name":"Stroop, Ralf","first_name":"Ralf"},{"first_name":"Tobias","full_name":"Hemsel, Tobias","last_name":"Hemsel","id":"210"},{"first_name":"Jörg","full_name":"Wallaschek, Jörg","last_name":"Wallaschek"}],"department":[{"_id":"151"}],"keyword":["biomedical measurement","brain","cancer","neurophysiology","phantoms","phase locked loops","piezoelectric actuators","surgery","tactile sensors","transfer functions","tumours","PLL","biomedical tissue differentiation system","brain tumor resection","frequency control","frequency shift","gel-phantom","high sensitivity actuator-sensor system","neurosurgery","phase-locked loop","piezoelectric actuators","piezoelectric bimorph","self-oscillating circuit","sensor sensitivity","tactile differentiation","tactile sensor system","transfer function","tumor boundary","visual differentiation","Biomedical measurements","Circuits","Frequency control","Neoplasms","Neurosurgery","Phase locked loops","Piezoelectric actuators","Surges","Transfer functions","Voltage"],"publication":"Frequency Control Symposium, 2008 IEEE International","publication_identifier":{"issn":["1075-6787"]},"status":"public","date_created":"2019-04-29T13:07:39Z"},{"date_created":"2019-01-08T09:52:43Z","status":"public","keyword":["integrated circuit design","hardware evolution","evolutionary hardware design","evolutionary optimizers","hash functions","preengineered circuits","Hardware","Circuits","Design optimization","Visualization","Genetic programming","Genetic mutations","Clustering algorithms","Biological cells","Field programmable gate arrays","Routing"],"publication":"Second NASA/ESA Conference on Adaptive Hardware and Systems (AHS 2007)","publisher":"IEEE","author":[{"last_name":"Kaufmann","full_name":"Kaufmann, Paul","first_name":"Paul"},{"full_name":"Platzner, Marco","first_name":"Marco","id":"398","last_name":"Platzner"}],"user_id":"3118","abstract":[{"lang":"eng","text":"In this paper, we present a framework that supports experimenting with evolutionary hardware design. We describe the framework's modules for composing evolutionary optimizers and for setting up, controlling, and analyzing experiments. Two case studies demonstrate the usefulness of the framework: evolution of hash functions and evolution based on pre-engineered circuits."}],"page":"447-454","year":"2007","citation":{"short":"P. Kaufmann, M. Platzner, in: Second NASA/ESA Conference on Adaptive Hardware and Systems (AHS 2007), IEEE, 2007, pp. 447–454.","ieee":"P. Kaufmann and M. Platzner, “MOVES: A Modular Framework for Hardware Evolution,” in Second NASA/ESA Conference on Adaptive Hardware and Systems (AHS 2007), Edinburgh, UK, 2007, pp. 447–454.","chicago":"Kaufmann, Paul, and Marco Platzner. “MOVES: A Modular Framework for Hardware Evolution.” In Second NASA/ESA Conference on Adaptive Hardware and Systems (AHS 2007), 447–54. IEEE, 2007. https://doi.org/10.1109/ahs.2007.73.","apa":"Kaufmann, P., & Platzner, M. (2007). MOVES: A Modular Framework for Hardware Evolution. In Second NASA/ESA Conference on Adaptive Hardware and Systems (AHS 2007) (pp. 447–454). Edinburgh, UK: IEEE. https://doi.org/10.1109/ahs.2007.73","ama":"Kaufmann P, Platzner M. MOVES: A Modular Framework for Hardware Evolution. In: Second NASA/ESA Conference on Adaptive Hardware and Systems (AHS 2007). IEEE; 2007:447-454. doi:10.1109/ahs.2007.73","mla":"Kaufmann, Paul, and Marco Platzner. “MOVES: A Modular Framework for Hardware Evolution.” Second NASA/ESA Conference on Adaptive Hardware and Systems (AHS 2007), IEEE, 2007, pp. 447–54, doi:10.1109/ahs.2007.73.","bibtex":"@inproceedings{Kaufmann_Platzner_2007, title={MOVES: A Modular Framework for Hardware Evolution}, DOI={10.1109/ahs.2007.73}, booktitle={Second NASA/ESA Conference on Adaptive Hardware and Systems (AHS 2007)}, publisher={IEEE}, author={Kaufmann, Paul and Platzner, Marco}, year={2007}, pages={447–454} }"},"type":"conference","conference":{"end_date":"2007-08-08","location":"Edinburgh, UK","name":"Second NASA/ESA Conference on Adaptive Hardware and Systems (AHS 2007)","start_date":"2007-08-05"},"_id":"6508","publication_identifier":{"isbn":["076952866X","9780769528663"]},"publication_status":"published","department":[{"_id":"78"}],"title":"MOVES: A Modular Framework for Hardware Evolution","language":[{"iso":"eng"}],"doi":"10.1109/ahs.2007.73","date_updated":"2022-01-06T07:03:08Z"},{"language":[{"iso":"eng"}],"date_updated":"2022-01-06T06:51:12Z","oa":"1","doi":"10.1109/ICASSP.2005.1416129","department":[{"_id":"54"}],"title":"Acoustic filter-and-sum beamforming by adaptive principal component analysis","main_file_link":[{"open_access":"1","url":"https://groups.uni-paderborn.de/nt/pubs/2005/WaHa05.pdf"}],"page":"iv/797-iv/800 Vol. 4","citation":{"bibtex":"@inproceedings{Warsitz_Haeb-Umbach_2005, title={Acoustic filter-and-sum beamforming by adaptive principal component analysis}, volume={4}, DOI={10.1109/ICASSP.2005.1416129}, booktitle={IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2005)}, author={Warsitz, Ernst and Haeb-Umbach, Reinhold}, year={2005}, pages={iv/797-iv/800 Vol. 4} }","mla":"Warsitz, Ernst, and Reinhold Haeb-Umbach. “Acoustic Filter-and-Sum Beamforming by Adaptive Principal Component Analysis.” IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2005), vol. 4, 2005, p. iv/797-iv/800 Vol. 4, doi:10.1109/ICASSP.2005.1416129.","chicago":"Warsitz, Ernst, and Reinhold Haeb-Umbach. “Acoustic Filter-and-Sum Beamforming by Adaptive Principal Component Analysis.” In IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2005), 4:iv/797-iv/800 Vol. 4, 2005. https://doi.org/10.1109/ICASSP.2005.1416129.","apa":"Warsitz, E., & Haeb-Umbach, R. (2005). Acoustic filter-and-sum beamforming by adaptive principal component analysis. In IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2005) (Vol. 4, p. iv/797-iv/800 Vol. 4). https://doi.org/10.1109/ICASSP.2005.1416129","ama":"Warsitz E, Haeb-Umbach R. Acoustic filter-and-sum beamforming by adaptive principal component analysis. In: IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2005). Vol 4. ; 2005:iv/797-iv/800 Vol. 4. doi:10.1109/ICASSP.2005.1416129","ieee":"E. Warsitz and R. Haeb-Umbach, “Acoustic filter-and-sum beamforming by adaptive principal component analysis,” in IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2005), 2005, vol. 4, p. iv/797-iv/800 Vol. 4.","short":"E. Warsitz, R. Haeb-Umbach, in: IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2005), 2005, p. iv/797-iv/800 Vol. 4."},"type":"conference","year":"2005","_id":"11930","intvolume":" 4","keyword":["acoustic filter-and-sum beamforming","acoustic room impulses","acoustic signal processing","adaptive principal component analysis","adaptive signal processing","architectural acoustics","constrained optimization problem","cross power spectral density","deterministic algorithm","deterministic algorithms","distant-talking environments","eigenvalues and eigenfunctions","eigenvector","enhanced signal","filter-and-sum beamformer","FIR filter coefficients","FIR filter coefficients","FIR filters","gradient methods","human-machine interfaces","iterative estimation","iterative methods","largest eigenvalue","microphone signals","multichannel signal processing","optimisation","principal component analysis","spectral analysis","stochastic gradient ascent algorithm","stochastic processes"],"publication":"IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2005)","author":[{"first_name":"Ernst","full_name":"Warsitz, Ernst","last_name":"Warsitz"},{"first_name":"Reinhold","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach","id":"242"}],"date_created":"2019-07-12T05:31:00Z","status":"public","volume":4,"abstract":[{"lang":"eng","text":"For human-machine interfaces in distant-talking environments multichannel signal processing is often employed to obtain an enhanced signal for subsequent processing. In this paper we propose a novel adaptation algorithm for a filter-and-sum beamformer to adjust the coefficients of FIR filters to changing acoustic room impulses, e.g. due to speaker movement. A deterministic and a stochastic gradient ascent algorithm are derived from a constrained optimization problem, which iteratively estimates the eigenvector corresponding to the largest eigenvalue of the cross power spectral density of the microphone signals. The method does not require an explicit estimation of the speaker location. The experimental results show fast adaptation and excellent robustness of the proposed algorithm."}],"user_id":"44006"},{"language":[{"iso":"eng"}],"year":"2004","citation":{"bibtex":"@inproceedings{Gausemeier_Müller_Paelke_Bauch_Shen_Radkowski_2004, place={Dubrovnik}, title={Virtual Prototyping Of Self-Optimizing Mechatronic Systems}, booktitle={Proceedings of the Design 2004}, author={Gausemeier, Jürgen and Müller, Wolfgang and Paelke, Volker and Bauch, Jürgen and Shen, Q. and Radkowski, R. }, year={2004} }","mla":"Gausemeier, Jürgen, et al. “Virtual Prototyping Of Self-Optimizing Mechatronic Systems.” Proceedings of the Design 2004, 2004.","apa":"Gausemeier, J., Müller, W., Paelke, V., Bauch, J., Shen, Q., & Radkowski, R. (2004). Virtual Prototyping Of Self-Optimizing Mechatronic Systems. Proceedings of the Design 2004. 8th International Design Conference , Dubrovnik.","ama":"Gausemeier J, Müller W, Paelke V, Bauch J, Shen Q, Radkowski R. Virtual Prototyping Of Self-Optimizing Mechatronic Systems. In: Proceedings of the Design 2004. ; 2004.","chicago":"Gausemeier, Jürgen, Wolfgang Müller, Volker Paelke, Jürgen Bauch, Q. Shen, and R. Radkowski. “Virtual Prototyping Of Self-Optimizing Mechatronic Systems.” In Proceedings of the Design 2004. Dubrovnik, 2004.","ieee":"J. Gausemeier, W. Müller, V. Paelke, J. Bauch, Q. Shen, and R. Radkowski, “Virtual Prototyping Of Self-Optimizing Mechatronic Systems,” presented at the 8th International Design Conference , Dubrovnik, 2004.","short":"J. Gausemeier, W. Müller, V. Paelke, J. Bauch, Q. Shen, R. Radkowski, in: Proceedings of the Design 2004, Dubrovnik, 2004."},"type":"conference","conference":{"location":"Dubrovnik","name":"8th International Design Conference "},"date_updated":"2023-01-24T09:12:40Z","_id":"39078","date_created":"2023-01-24T09:12:31Z","status":"public","department":[{"_id":"672"}],"publication":"Proceedings of the Design 2004","keyword":["mechatronic systems","self-optimization","virtual prototyping"],"author":[{"first_name":"Jürgen","full_name":"Gausemeier, Jürgen","last_name":"Gausemeier","id":"163"},{"id":"16243","last_name":"Müller","full_name":"Müller, Wolfgang","first_name":"Wolfgang"},{"full_name":"Paelke, Volker","first_name":"Volker","last_name":"Paelke"},{"full_name":"Bauch, Jürgen","first_name":"Jürgen","last_name":"Bauch"},{"last_name":"Shen","first_name":"Q.","full_name":"Shen, Q."},{"full_name":"Radkowski, R. ","first_name":"R. ","last_name":"Radkowski"}],"user_id":"5786","title":"Virtual Prototyping Of Self-Optimizing Mechatronic Systems","place":"Dubrovnik"}]