[{"keyword":["evolutionary algorithms","model-based optimization","parameter tuning"],"language":[{"iso":"eng"}],"extern":"1","_id":"48838","department":[{"_id":"819"}],"series_title":"GECCO ’15","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"}],"status":"public","publication":"Proceedings of the Genetic and Evolutionary Computation Conference","type":"conference","title":"Learning Feature-Parameter Mappings for Parameter Tuning via the Profile Expected Improvement","doi":"10.1145/2739480.2754673","date_updated":"2023-12-13T10:40:30Z","publisher":"Association for Computing Machinery","author":[{"last_name":"Bossek","orcid":"0000-0002-4121-4668","id":"102979","full_name":"Bossek, Jakob","first_name":"Jakob"},{"first_name":"Bernd","full_name":"Bischl, Bernd","last_name":"Bischl"},{"first_name":"Tobias","full_name":"Wagner, Tobias","last_name":"Wagner"},{"first_name":"Günter","full_name":"Rudolph, Günter","last_name":"Rudolph"}],"date_created":"2023-11-14T15:58:51Z","place":"New York, NY, USA","year":"2015","page":"1319–1326","citation":{"apa":"Bossek, J., Bischl, B., Wagner, T., &#38; Rudolph, G. (2015). Learning Feature-Parameter Mappings for Parameter Tuning via the Profile Expected Improvement. <i>Proceedings of the Genetic and Evolutionary Computation Conference</i>, 1319–1326. <a href=\"https://doi.org/10.1145/2739480.2754673\">https://doi.org/10.1145/2739480.2754673</a>","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.","mla":"Bossek, Jakob, et al. “Learning Feature-Parameter Mappings for Parameter Tuning via the Profile Expected Improvement.” <i>Proceedings of the Genetic and Evolutionary Computation Conference</i>, Association for Computing Machinery, 2015, pp. 1319–1326, doi:<a href=\"https://doi.org/10.1145/2739480.2754673\">10.1145/2739480.2754673</a>.","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={<a href=\"https://doi.org/10.1145/2739480.2754673\">10.1145/2739480.2754673</a>}, 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} }","ieee":"J. Bossek, B. Bischl, T. Wagner, and G. Rudolph, “Learning Feature-Parameter Mappings for Parameter Tuning via the Profile Expected Improvement,” in <i>Proceedings of the Genetic and Evolutionary Computation Conference</i>, 2015, pp. 1319–1326, doi: <a href=\"https://doi.org/10.1145/2739480.2754673\">10.1145/2739480.2754673</a>.","chicago":"Bossek, Jakob, Bernd Bischl, Tobias Wagner, and Günter Rudolph. “Learning Feature-Parameter Mappings for Parameter Tuning via the Profile Expected Improvement.” In <i>Proceedings of the Genetic and Evolutionary Computation Conference</i>, 1319–1326. GECCO ’15. New York, NY, USA: Association for Computing Machinery, 2015. <a href=\"https://doi.org/10.1145/2739480.2754673\">https://doi.org/10.1145/2739480.2754673</a>.","ama":"Bossek J, Bischl B, Wagner T, Rudolph G. Learning Feature-Parameter Mappings for Parameter Tuning via the Profile Expected Improvement. In: <i>Proceedings of the Genetic and Evolutionary Computation Conference</i>. GECCO ’15. Association for Computing Machinery; 2015:1319–1326. doi:<a href=\"https://doi.org/10.1145/2739480.2754673\">10.1145/2739480.2754673</a>"},"publication_identifier":{"isbn":["978-1-4503-3472-3"]},"publication_status":"published"},{"abstract":[{"lang":"eng","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."}],"status":"public","type":"conference","publication":"Proceedings of the Genetic and Evolutionary Computation Conference ","keyword":["combinatorial optimization","metaheuristics","multi-objective optimization","online algorithms","transportation"],"extern":"1","language":[{"iso":"eng"}],"_id":"48887","user_id":"102979","series_title":"GECCO’15","department":[{"_id":"819"}],"year":"2015","place":"New York, NY, USA","citation":{"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: <i>Proceedings of the Genetic and Evolutionary Computation Conference </i>. GECCO’15. Association for Computing Machinery; 2015:425–432. doi:<a href=\"https://doi.org/10.1145/2739480.2754705\">10.1145/2739480.2754705</a>","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 <i>Proceedings of the Genetic and Evolutionary Computation Conference </i>, 425–432. GECCO’15. New York, NY, USA: Association for Computing Machinery, 2015. <a href=\"https://doi.org/10.1145/2739480.2754705\">https://doi.org/10.1145/2739480.2754705</a>.","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 <i>Proceedings of the Genetic and Evolutionary Computation Conference </i>, 2015, pp. 425–432, doi: <a href=\"https://doi.org/10.1145/2739480.2754705\">10.1145/2739480.2754705</a>.","apa":"Meisel, S., Grimme, C., Bossek, J., Wölck, M., Rudolph, G., &#38; Trautmann, H. (2015). Evaluation of a Multi-Objective EA on Benchmark Instances for Dynamic Routing of a Vehicle. <i>Proceedings of the Genetic and Evolutionary Computation Conference </i>, 425–432. <a href=\"https://doi.org/10.1145/2739480.2754705\">https://doi.org/10.1145/2739480.2754705</a>","mla":"Meisel, Stephan, et al. “Evaluation of a Multi-Objective EA on Benchmark Instances for Dynamic Routing of a Vehicle.” <i>Proceedings of the Genetic and Evolutionary Computation Conference </i>, Association for Computing Machinery, 2015, pp. 425–432, doi:<a href=\"https://doi.org/10.1145/2739480.2754705\">10.1145/2739480.2754705</a>.","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={<a href=\"https://doi.org/10.1145/2739480.2754705\">10.1145/2739480.2754705</a>}, 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} }","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."},"page":"425–432","publication_identifier":{"isbn":["978-1-4503-3472-3"]},"title":"Evaluation of a Multi-Objective EA on Benchmark Instances for Dynamic Routing of a Vehicle","doi":"10.1145/2739480.2754705","publisher":"Association for Computing Machinery","date_updated":"2023-12-13T10:49:06Z","date_created":"2023-11-14T15:58:59Z","author":[{"first_name":"Stephan","last_name":"Meisel","full_name":"Meisel, Stephan"},{"first_name":"Christian","full_name":"Grimme, Christian","last_name":"Grimme"},{"orcid":"0000-0002-4121-4668","last_name":"Bossek","id":"102979","full_name":"Bossek, Jakob","first_name":"Jakob"},{"last_name":"Wölck","full_name":"Wölck, Martin","first_name":"Martin"},{"first_name":"Günter","last_name":"Rudolph","full_name":"Rudolph, Günter"},{"last_name":"Trautmann","full_name":"Trautmann, Heike","first_name":"Heike"}]},{"status":"public","type":"conference","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"],"language":[{"iso":"eng"}],"extern":"1","_id":"17661","series_title":"AAMAS '14","user_id":"83983","department":[{"_id":"63"},{"_id":"541"}],"place":"Richland, SC","year":"2014","citation":{"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} }","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.","mla":"King, Thomas C., et al. “Request Driven Social Sensing.” <i>Proceedings of the 2014 International Conference on Autonomous Agents and Multi-Agent Systems</i>, International Foundation for Autonomous Agents and Multiagent Systems, 2014, pp. 1651–52.","apa":"King, T. C., Liu, Q., Polevoy, G., de Weerdt, M., Dignum, V., van Riemsdijk, M. B., &#38; Warnier, M. (2014). Request Driven Social Sensing. In <i>Proceedings of the 2014 International Conference on Autonomous Agents and Multi-agent Systems</i> (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: <i>Proceedings of the 2014 International Conference on Autonomous Agents and Multi-Agent Systems</i>. AAMAS ’14. Richland, SC: International Foundation for Autonomous Agents and Multiagent Systems; 2014:1651-1652.","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 <i>Proceedings of the 2014 International Conference on Autonomous Agents and Multi-Agent Systems</i>, 1651–52. AAMAS ’14. Richland, SC: International Foundation for Autonomous Agents and Multiagent Systems, 2014.","ieee":"T. C. King <i>et al.</i>, “Request Driven Social Sensing,” in <i>Proceedings of the 2014 International Conference on Autonomous Agents and Multi-agent Systems</i>, 2014, pp. 1651–1652."},"page":"1651-1652","publication_identifier":{"isbn":["978-1-4503-2738-1"]},"title":"Request Driven Social Sensing","date_updated":"2022-01-06T06:53:16Z","publisher":"International Foundation for Autonomous Agents and Multiagent Systems","author":[{"full_name":"King, Thomas C.","last_name":"King","first_name":"Thomas C."},{"full_name":"Liu, Qingzhi","last_name":"Liu","first_name":"Qingzhi"},{"full_name":"Polevoy, Gleb","id":"83983","last_name":"Polevoy","first_name":"Gleb"},{"first_name":"Mathijs","last_name":"de Weerdt","full_name":"de Weerdt, Mathijs"},{"first_name":"Virginia","full_name":"Dignum, Virginia","last_name":"Dignum"},{"first_name":"M. Birna","full_name":"van Riemsdijk, M. Birna","last_name":"van Riemsdijk"},{"last_name":"Warnier","full_name":"Warnier, Martijn","first_name":"Martijn"}],"date_created":"2020-08-06T15:21:45Z"},{"date_created":"2019-05-20T13:11:02Z","author":[{"first_name":"James Kuria ","full_name":"Kimotho, James Kuria ","last_name":"Kimotho"},{"first_name":"Tobias","full_name":"Meyer, Tobias","last_name":"Meyer"},{"first_name":"Walter","last_name":"Sextro","full_name":"Sextro, Walter","id":"21220"}],"date_updated":"2019-05-20T13:12:27Z","doi":"10.1109/ICPHM.2014.7036406","title":"PEM fuel cell prognostics using particle filter with model parameter adaptation","citation":{"ama":"Kimotho JK, Meyer T, Sextro W. PEM fuel cell prognostics using particle filter with model parameter adaptation. In: <i>Prognostics and Health Management (PHM), 2014 IEEE Conference On</i>. ; 2014:1-6. doi:<a href=\"https://doi.org/10.1109/ICPHM.2014.7036406\">10.1109/ICPHM.2014.7036406</a>","chicago":"Kimotho, James Kuria , Tobias Meyer, and Walter Sextro. “PEM Fuel Cell Prognostics Using Particle Filter with Model Parameter Adaptation.” In <i>Prognostics and Health Management (PHM), 2014 IEEE Conference On</i>, 1–6, 2014. <a href=\"https://doi.org/10.1109/ICPHM.2014.7036406\">https://doi.org/10.1109/ICPHM.2014.7036406</a>.","ieee":"J. K. Kimotho, T. Meyer, and W. Sextro, “PEM fuel cell prognostics using particle filter with model parameter adaptation,” in <i>Prognostics and Health Management (PHM), 2014 IEEE Conference on</i>, 2014, pp. 1–6.","bibtex":"@inproceedings{Kimotho_Meyer_Sextro_2014, title={PEM fuel cell prognostics using particle filter with model parameter adaptation}, DOI={<a href=\"https://doi.org/10.1109/ICPHM.2014.7036406\">10.1109/ICPHM.2014.7036406</a>}, 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} }","short":"J.K. Kimotho, T. Meyer, W. Sextro, in: Prognostics and Health Management (PHM), 2014 IEEE Conference On, 2014, pp. 1–6.","mla":"Kimotho, James Kuria, et al. “PEM Fuel Cell Prognostics Using Particle Filter with Model Parameter Adaptation.” <i>Prognostics and Health Management (PHM), 2014 IEEE Conference On</i>, 2014, pp. 1–6, doi:<a href=\"https://doi.org/10.1109/ICPHM.2014.7036406\">10.1109/ICPHM.2014.7036406</a>.","apa":"Kimotho, J. K., Meyer, T., &#38; Sextro, W. (2014). PEM fuel cell prognostics using particle filter with model parameter adaptation. In <i>Prognostics and Health Management (PHM), 2014 IEEE Conference on</i> (pp. 1–6). <a href=\"https://doi.org/10.1109/ICPHM.2014.7036406\">https://doi.org/10.1109/ICPHM.2014.7036406</a>"},"page":"1-6","year":"2014","user_id":"55222","department":[{"_id":"151"}],"_id":"9879","language":[{"iso":"eng"}],"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"],"type":"conference","publication":"Prognostics and Health Management (PHM), 2014 IEEE Conference on","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"}]},{"intvolume":"         5","citation":{"apa":"Meyer , T., &#38; Sextro, W. (2014). Closed-loop Control System for the Reliability of Intelligent Mechatronic Systems. In <i>Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014</i> (Vol. 5).","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} }","short":"T. Meyer , W. Sextro, in: Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014, 2014.","mla":"Meyer , Tobias, and Walter Sextro. “Closed-Loop Control System for the Reliability of Intelligent Mechatronic Systems.” <i>Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014</i>, vol. 5, 2014.","ieee":"T. Meyer  and W. Sextro, “Closed-loop Control System for the Reliability of Intelligent Mechatronic Systems,” in <i>Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014</i>, 2014, vol. 5.","chicago":"Meyer , Tobias, and Walter Sextro. “Closed-Loop Control System for the Reliability of Intelligent Mechatronic Systems.” In <i>Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014</i>, Vol. 5, 2014.","ama":"Meyer  T, Sextro W. Closed-loop Control System for the Reliability of Intelligent Mechatronic Systems. In: <i>Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014</i>. Vol 5. ; 2014."},"year":"2014","title":"Closed-loop Control System for the Reliability of Intelligent Mechatronic Systems","volume":5,"date_created":"2019-05-20T13:18:20Z","author":[{"first_name":"Tobias","last_name":"Meyer ","full_name":"Meyer , Tobias"},{"first_name":"Walter","full_name":"Sextro, Walter","last_name":"Sextro"}],"date_updated":"2019-05-20T13:19:08Z","status":"public","abstract":[{"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.","lang":"eng"}],"publication":"Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014","type":"conference","language":[{"iso":"eng"}],"keyword":["self-optimization reliability adaptive"],"department":[{"_id":"151"}],"user_id":"55222","_id":"9884"},{"department":[{"_id":"151"}],"user_id":"55222","_id":"9885","language":[{"iso":"eng"}],"keyword":["Self-optimization","multiobjective optimization","objective function","dependability","intelligent system","behavior adaptation"],"publication":"Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence","type":"journal_article","status":"public","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."}],"volume":15,"author":[{"full_name":"Meyer , Tobias","last_name":"Meyer ","first_name":"Tobias"},{"first_name":"Christoph","last_name":"Sondermann-Wölke","full_name":"Sondermann-Wölke, Christoph"},{"first_name":"Walter","full_name":"Sextro, Walter","id":"21220","last_name":"Sextro"}],"date_created":"2019-05-20T13:19:37Z","date_updated":"2019-09-16T10:22:04Z","doi":"10.1016/j.protcy.2014.09.033","title":"Method to Identify Dependability Objectives in Multiobjective Optimization Problem","quality_controlled":"1","page":"46-53","intvolume":"        15","citation":{"ama":"Meyer  T, Sondermann-Wölke C, Sextro W. Method to Identify Dependability Objectives in Multiobjective Optimization Problem. <i>Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence</i>. 2014;15:46-53. doi:<a href=\"https://doi.org/10.1016/j.protcy.2014.09.033\">10.1016/j.protcy.2014.09.033</a>","chicago":"Meyer , Tobias, Christoph Sondermann-Wölke, and Walter Sextro. “Method to Identify Dependability Objectives in Multiobjective Optimization Problem.” <i>Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence</i> 15 (2014): 46–53. <a href=\"https://doi.org/10.1016/j.protcy.2014.09.033\">https://doi.org/10.1016/j.protcy.2014.09.033</a>.","ieee":"T. Meyer , C. Sondermann-Wölke, and W. Sextro, “Method to Identify Dependability Objectives in Multiobjective Optimization Problem,” <i>Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence</i>, vol. 15, pp. 46–53, 2014.","bibtex":"@article{Meyer _Sondermann-Wölke_Sextro_2014, title={Method to Identify Dependability Objectives in Multiobjective Optimization Problem}, volume={15}, DOI={<a href=\"https://doi.org/10.1016/j.protcy.2014.09.033\">10.1016/j.protcy.2014.09.033</a>}, 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} }","short":"T. Meyer , C. Sondermann-Wölke, W. Sextro, Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence 15 (2014) 46–53.","mla":"Meyer , Tobias, et al. “Method to Identify Dependability Objectives in Multiobjective Optimization Problem.” <i>Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence</i>, vol. 15, 2014, pp. 46–53, doi:<a href=\"https://doi.org/10.1016/j.protcy.2014.09.033\">10.1016/j.protcy.2014.09.033</a>.","apa":"Meyer , T., Sondermann-Wölke, C., &#38; Sextro, W. (2014). Method to Identify Dependability Objectives in Multiobjective Optimization Problem. <i>Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence</i>, <i>15</i>, 46–53. <a href=\"https://doi.org/10.1016/j.protcy.2014.09.033\">https://doi.org/10.1016/j.protcy.2014.09.033</a>"},"year":"2014"},{"doi":"10.1109/ICES.2014.7008719","title":"Towards self-adaptive caches: A run-time reconfigurable multi-core infrastructure","author":[{"full_name":"Ho, Nam","last_name":"Ho","first_name":"Nam"},{"first_name":"Paul","full_name":"Kaufmann, Paul","last_name":"Kaufmann"},{"id":"398","full_name":"Platzner, Marco","last_name":"Platzner","first_name":"Marco"}],"date_created":"2019-07-10T11:23:00Z","date_updated":"2022-01-06T06:50:49Z","page":"31-37","citation":{"bibtex":"@inproceedings{Ho_Kaufmann_Platzner_2014, title={Towards self-adaptive caches: A run-time reconfigurable multi-core infrastructure}, DOI={<a href=\"https://doi.org/10.1109/ICES.2014.7008719\">10.1109/ICES.2014.7008719</a>}, 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.","mla":"Ho, Nam, et al. “Towards Self-Adaptive Caches: A Run-Time Reconfigurable Multi-Core Infrastructure.” <i>2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES)</i>, 2014, pp. 31–37, doi:<a href=\"https://doi.org/10.1109/ICES.2014.7008719\">10.1109/ICES.2014.7008719</a>.","apa":"Ho, N., Kaufmann, P., &#38; Platzner, M. (2014). Towards self-adaptive caches: A run-time reconfigurable multi-core infrastructure. In <i>2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES)</i> (pp. 31–37). <a href=\"https://doi.org/10.1109/ICES.2014.7008719\">https://doi.org/10.1109/ICES.2014.7008719</a>","ama":"Ho N, Kaufmann P, Platzner M. Towards self-adaptive caches: A run-time reconfigurable multi-core infrastructure. In: <i>2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES)</i>. ; 2014:31-37. doi:<a href=\"https://doi.org/10.1109/ICES.2014.7008719\">10.1109/ICES.2014.7008719</a>","chicago":"Ho, Nam, Paul Kaufmann, and Marco Platzner. “Towards Self-Adaptive Caches: A Run-Time Reconfigurable Multi-Core Infrastructure.” In <i>2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES)</i>, 31–37, 2014. <a href=\"https://doi.org/10.1109/ICES.2014.7008719\">https://doi.org/10.1109/ICES.2014.7008719</a>.","ieee":"N. Ho, P. Kaufmann, and M. Platzner, “Towards self-adaptive caches: A run-time reconfigurable multi-core infrastructure,” in <i>2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES)</i>, 2014, pp. 31–37."},"year":"2014","language":[{"iso":"eng"}],"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"],"department":[{"_id":"78"}],"user_id":"3118","_id":"10677","status":"public","publication":"2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES)","type":"conference"},{"year":"2013","citation":{"ama":"Sjöklint M, Constantiou I, Trier M. Numerical Representations and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research Framework. In: <i>ECIS 2013 Proceedings</i>. 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 <i>ECIS 2013 Proceedings</i>, 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 <i>ECIS 2013 Proceedings</i>. Association for Information Systems. AIS Electronic Library (AISeL), 2013.","apa":"Sjöklint, M., Constantiou, I., &#38; Trier, M. (2013). Numerical Representations and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research Framework. In <i>ECIS 2013 Proceedings</i>. Association for Information Systems. AIS Electronic Library (AISeL).","short":"M. Sjöklint, I. Constantiou, M. Trier, in: 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} }","mla":"Sjöklint, Mimmi, et al. “Numerical Representations and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research Framework.” <i>ECIS 2013 Proceedings</i>, Association for Information Systems. AIS Electronic Library (AISeL), 2013."},"publication_identifier":{"isbn":["9783834924421"]},"title":"Numerical Representations and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research Framework","publisher":"Association for Information Systems. AIS Electronic Library (AISeL)","date_updated":"2022-01-06T06:51:33Z","author":[{"first_name":"Mimmi","full_name":"Sjöklint, Mimmi","last_name":"Sjöklint"},{"first_name":"Ioanna","full_name":"Constantiou, Ioanna","last_name":"Constantiou"},{"first_name":"Matthias","last_name":"Trier","id":"72744","full_name":"Trier, Matthias"}],"date_created":"2019-09-19T12:14:55Z","abstract":[{"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.","lang":"eng"}],"status":"public","publication":"ECIS 2013 Proceedings","type":"conference","keyword":["User Behaviour","Social Networking Sites","Numerical Representations","Multi-Theoretical Framework","Quantified Self","Pointification"],"language":[{"iso":"eng"}],"_id":"13324","department":[{"_id":"198"}],"user_id":"62809"},{"keyword":["Geometry calibration","microphone arrays","position self-calibration"],"language":[{"iso":"eng"}],"abstract":[{"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.","lang":"eng"}],"publication":"38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013)","title":"DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic","date_created":"2019-07-12T05:29:07Z","year":"2013","quality_controlled":"1","_id":"11832","user_id":"460","department":[{"_id":"54"}],"status":"public","type":"conference","main_file_link":[{"open_access":"1","url":"https://groups.uni-paderborn.de/nt/pubs/2013/JacSchHae_ICASSP2013_Rev2.pdf"}],"doi":"10.1109/ICASSP.2013.6637620","oa":"1","date_updated":"2023-10-26T08:11:12Z","author":[{"first_name":"Florian","full_name":"Jacob, Florian","last_name":"Jacob"},{"full_name":"Schmalenstroeer, Joerg","id":"460","last_name":"Schmalenstroeer","first_name":"Joerg"},{"id":"242","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach","first_name":"Reinhold"}],"citation":{"apa":"Jacob, F., Schmalenstroeer, J., &#38; Haeb-Umbach, R. (2013). DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic. <i>38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013)</i>, 116–120. <a href=\"https://doi.org/10.1109/ICASSP.2013.6637620\">https://doi.org/10.1109/ICASSP.2013.6637620</a>","mla":"Jacob, Florian, et al. “DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic.” <i>38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013)</i>, 2013, pp. 116–20, doi:<a href=\"https://doi.org/10.1109/ICASSP.2013.6637620\">10.1109/ICASSP.2013.6637620</a>.","short":"F. Jacob, J. Schmalenstroeer, R. Haeb-Umbach, in: 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), 2013, pp. 116–120.","bibtex":"@inproceedings{Jacob_Schmalenstroeer_Haeb-Umbach_2013, title={DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic}, DOI={<a href=\"https://doi.org/10.1109/ICASSP.2013.6637620\">10.1109/ICASSP.2013.6637620</a>}, 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} }","ama":"Jacob F, Schmalenstroeer J, Haeb-Umbach R. DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic. In: <i>38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013)</i>. ; 2013:116-120. doi:<a href=\"https://doi.org/10.1109/ICASSP.2013.6637620\">10.1109/ICASSP.2013.6637620</a>","chicago":"Jacob, Florian, Joerg Schmalenstroeer, and Reinhold Haeb-Umbach. “DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic.” In <i>38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013)</i>, 116–20, 2013. <a href=\"https://doi.org/10.1109/ICASSP.2013.6637620\">https://doi.org/10.1109/ICASSP.2013.6637620</a>.","ieee":"F. Jacob, J. Schmalenstroeer, and R. Haeb-Umbach, “DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic,” in <i>38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013)</i>, 2013, pp. 116–120, doi: <a href=\"https://doi.org/10.1109/ICASSP.2013.6637620\">10.1109/ICASSP.2013.6637620</a>."},"page":"116-120","publication_identifier":{"issn":["1520-6149"]},"related_material":{"link":[{"url":"https://groups.uni-paderborn.de/nt/pubs/2013/JaScHa13_Presentation.pdf","description":"Presentation","relation":"supplementary_material"}]}},{"status":"public","abstract":[{"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.","lang":"eng"}],"type":"conference","extern":"1","language":[{"iso":"eng"}],"keyword":["private firms","voluntary audit","cost of debt","self-selection bias","lemon problem"],"department":[{"_id":"635"},{"_id":"186"},{"_id":"551"}],"user_id":"88603","_id":"37109","citation":{"ama":"Kosi U, Koren J, Valentincic A. Does Financial Statement Audit Reduce the Cost of Debt of Private Firms? 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., &#38; Valentincic, A. (2013). <i>Does Financial Statement Audit Reduce the Cost of Debt of Private Firms?</i> 36th Annual Congress of European Accounting Association, Paris, France.","short":"U. Kosi, J. Koren, A. Valentincic, 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. <i>Does Financial Statement Audit Reduce the Cost of Debt of Private Firms?</i> 2013."},"year":"2013","conference":{"start_date":"2013-05-02","name":"36th Annual Congress of European Accounting Association","location":"Paris, France","end_date":"2013-05-05"},"main_file_link":[{"url":"https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2373987"}],"title":"Does Financial Statement Audit Reduce the Cost of Debt of Private Firms?","author":[{"last_name":"Kosi","full_name":"Kosi, Urska","id":"54068","first_name":"Urska"},{"first_name":"Jerney","full_name":"Koren, Jerney","last_name":"Koren"},{"first_name":"Aljosa","full_name":"Valentincic, Aljosa","last_name":"Valentincic"}],"date_created":"2023-01-17T13:25:30Z","date_updated":"2023-01-17T13:51:24Z"},{"date_created":"2021-07-15T08:38:08Z","author":[{"last_name":"Becker","full_name":"Becker, Matthias","first_name":"Matthias"},{"first_name":"Markus","full_name":"Luckey, Markus","last_name":"Luckey"},{"full_name":"Becker, Steffen","last_name":"Becker","first_name":"Steffen"}],"date_updated":"2022-01-06T06:55:39Z","publisher":"ACM","doi":"10.1145/2304696.2304716","title":"Model-driven Performance Engineering of Self-adaptive Systems: A Survey","publication_identifier":{"isbn":["978-1-4503-1346-9"]},"citation":{"ieee":"M. Becker, M. Luckey, and S. Becker, “Model-driven Performance Engineering of Self-adaptive Systems: A Survey,” in <i>{Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}</i>, 2012, pp. 117–122.","chicago":"Becker, Matthias, Markus Luckey, and Steffen Becker. “Model-Driven Performance Engineering of Self-Adaptive Systems: A Survey.” In <i>{Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}</i>, 117–22. New York, NY, USA: ACM, 2012. <a href=\"https://doi.org/10.1145/2304696.2304716\">https://doi.org/10.1145/2304696.2304716</a>.","ama":"Becker M, Luckey M, Becker S. Model-driven Performance Engineering of Self-adaptive Systems: A Survey. In: <i>{Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}</i>. New York, NY, USA: ACM; 2012:117-122. doi:<a href=\"https://doi.org/10.1145/2304696.2304716\">10.1145/2304696.2304716</a>","apa":"Becker, M., Luckey, M., &#38; Becker, S. (2012). Model-driven Performance Engineering of Self-adaptive Systems: A Survey. In <i>{Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}</i> (pp. 117–122). New York, NY, USA: ACM. <a href=\"https://doi.org/10.1145/2304696.2304716\">https://doi.org/10.1145/2304696.2304716</a>","bibtex":"@inproceedings{Becker_Luckey_Becker_2012, place={New York, NY, USA}, title={Model-driven Performance Engineering of Self-adaptive Systems: A Survey}, DOI={<a href=\"https://doi.org/10.1145/2304696.2304716\">10.1145/2304696.2304716</a>}, 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.” <i>{Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}</i>, ACM, 2012, pp. 117–22, doi:<a href=\"https://doi.org/10.1145/2304696.2304716\">10.1145/2304696.2304716</a>.","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."},"page":"117-122","place":"New York, NY, USA","year":"2012","user_id":"4870","_id":"22737","keyword":["model-driven performance engineering","self-*","Self-adaptation","software performance"],"type":"conference","publication":"{Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}","status":"public"},{"keyword":["Services","Remote services","Self-services","Technology mediation"],"language":[{"iso":"eng"}],"publication":"Technovation","abstract":[{"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.","lang":"eng"}],"publisher":"Elsevier","date_created":"2018-11-16T09:43:45Z","title":"Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics.","issue":"2","year":"2012","_id":"5718","user_id":"37741","department":[{"_id":"181"}],"article_type":"original","type":"journal_article","status":"public","date_updated":"2022-01-06T07:02:37Z","author":[{"first_name":"Jan H","last_name":"Schumann","full_name":"Schumann, Jan H"},{"first_name":"Nancy","id":"36392","full_name":"Wünderlich, Nancy","last_name":"Wünderlich"},{"first_name":"Florian","last_name":"Wangenheim","full_name":"Wangenheim, Florian"}],"volume":32,"publication_status":"published","citation":{"apa":"Schumann, J. H., Wünderlich, N., &#38; Wangenheim, F. (2012). Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics. <i>Technovation</i>, <i>32</i>(2), 133–143.","short":"J.H. Schumann, N. Wünderlich, F. Wangenheim, Technovation 32 (2012) 133–143.","mla":"Schumann, Jan H., et al. “Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics.” <i>Technovation</i>, vol. 32, no. 2, Elsevier, 2012, pp. 133–43.","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} }","ieee":"J. H. Schumann, N. Wünderlich, and F. Wangenheim, “Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics.,” <i>Technovation</i>, vol. 32, no. 2, pp. 133–143, 2012.","chicago":"Schumann, Jan H, Nancy Wünderlich, and Florian Wangenheim. “Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics.” <i>Technovation</i> 32, no. 2 (2012): 133–43.","ama":"Schumann JH, Wünderlich N, Wangenheim F. Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics. <i>Technovation</i>. 2012;32(2):133-143."},"page":"133-143","intvolume":"        32"},{"title":"Non-perturbing cavitation detection / monitoring in sonochemical reactors","doi":"10.1109/ULTSYM.2012.0284","date_updated":"2022-01-06T07:04:20Z","date_created":"2019-05-13T13:18:49Z","author":[{"last_name":"Bornmann","full_name":"Bornmann, Peter","first_name":"Peter"},{"full_name":"Hemsel, Tobias","id":"210","last_name":"Hemsel","first_name":"Tobias"},{"first_name":"Walter","last_name":"Sextro","full_name":"Sextro, Walter","id":"21220"},{"full_name":"Maeda, Takafumi","last_name":"Maeda","first_name":"Takafumi"},{"first_name":"Takeshi","last_name":"Morita","full_name":"Morita, Takeshi"}],"year":"2012","page":"1141-1144","citation":{"short":"P. Bornmann, T. Hemsel, W. Sextro, T. Maeda, T. Morita, in: Ultrasonics Symposium (IUS), 2012 IEEE International, 2012, pp. 1141–1144.","bibtex":"@inproceedings{Bornmann_Hemsel_Sextro_Maeda_Morita_2012, title={Non-perturbing cavitation detection / monitoring in sonochemical reactors}, DOI={<a href=\"https://doi.org/10.1109/ULTSYM.2012.0284\">10.1109/ULTSYM.2012.0284</a>}, 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.” <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i>, 2012, pp. 1141–44, doi:<a href=\"https://doi.org/10.1109/ULTSYM.2012.0284\">10.1109/ULTSYM.2012.0284</a>.","apa":"Bornmann, P., Hemsel, T., Sextro, W., Maeda, T., &#38; Morita, T. (2012). Non-perturbing cavitation detection / monitoring in sonochemical reactors. In <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i> (pp. 1141–1144). <a href=\"https://doi.org/10.1109/ULTSYM.2012.0284\">https://doi.org/10.1109/ULTSYM.2012.0284</a>","ama":"Bornmann P, Hemsel T, Sextro W, Maeda T, Morita T. Non-perturbing cavitation detection / monitoring in sonochemical reactors. In: <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i>. ; 2012:1141-1144. doi:<a href=\"https://doi.org/10.1109/ULTSYM.2012.0284\">10.1109/ULTSYM.2012.0284</a>","ieee":"P. Bornmann, T. Hemsel, W. Sextro, T. Maeda, and T. Morita, “Non-perturbing cavitation detection / monitoring in sonochemical reactors,” in <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i>, 2012, pp. 1141–1144.","chicago":"Bornmann, Peter, Tobias Hemsel, Walter Sextro, Takafumi Maeda, and Takeshi Morita. “Non-Perturbing Cavitation Detection / Monitoring in Sonochemical Reactors.” In <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i>, 1141–44, 2012. <a href=\"https://doi.org/10.1109/ULTSYM.2012.0284\">https://doi.org/10.1109/ULTSYM.2012.0284</a>."},"publication_identifier":{"issn":["1948-5719"]},"quality_controlled":"1","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"],"language":[{"iso":"eng"}],"_id":"9783","department":[{"_id":"151"}],"user_id":"55222","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"}],"status":"public","publication":"Ultrasonics Symposium (IUS), 2012 IEEE International","type":"conference"},{"date_updated":"2022-01-06T07:04:20Z","date_created":"2019-05-13T13:23:45Z","author":[{"first_name":"Benjamin","last_name":"Klöpper","full_name":"Klöpper, Benjamin"},{"last_name":"Sondermann-Wölke","full_name":"Sondermann-Wölke, Christoph","first_name":"Christoph"},{"full_name":"Romaus, Christoph","last_name":"Romaus","first_name":"Christoph"}],"volume":24,"title":"Probabilistic Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management of an Autonomous Railway Vehicle","quality_controlled":"1","issue":"1","year":"2012","citation":{"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.” <i>Journal of Robotics and Mechatronics</i> 24, no. 1 (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,” <i>Journal of Robotics and Mechatronics</i>, vol. 24, no. 1, pp. 5–15, 2012.","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. <i>Journal of Robotics and Mechatronics</i>. 2012;24(1):5-15.","apa":"Klöpper, B., Sondermann-Wölke, C., &#38; Romaus, C. (2012). Probabilistic Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management of an Autonomous Railway Vehicle. <i>Journal of Robotics and Mechatronics</i>, <i>24</i>(1), 5–15.","short":"B. Klöpper, C. Sondermann-Wölke, C. Romaus, Journal of Robotics and Mechatronics 24 (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.” <i>Journal of Robotics and Mechatronics</i>, 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} }"},"page":"5-15","intvolume":"        24","_id":"9786","user_id":"55222","department":[{"_id":"151"}],"keyword":["self-optimizing systems","dependability","probabilistic planning","energy management"],"language":[{"iso":"eng"}],"type":"journal_article","publication":"Journal of Robotics and Mechatronics","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"}],"status":"public"},{"related_material":{"link":[{"description":"Video","relation":"supplementary_material","url":"https://groups.uni-paderborn.de/nt/pubs/2012/Microphine_Array_Position_Self-Calibration_from_Reverberant_Speech_Input.mp4"},{"url":"https://groups.uni-paderborn.de/nt/pubs/2012/JaScHa12_Poster.pdf","relation":"supplementary_material","description":"Poster"},{"url":"https://groups.uni-paderborn.de/nt/pubs/2012/JaScHa12_Demonstrator.pdf","relation":"supplementary_material","description":"Demonstrator"}]},"quality_controlled":"1","citation":{"apa":"Jacob, F., Schmalenstroeer, J., &#38; Haeb-Umbach, R. (2012). Microphone Array Position Self-Calibration from Reverberant Speech Input. <i>International Workshop on Acoustic Signal Enhancement (IWAENC 2012)</i>.","short":"F. Jacob, J. Schmalenstroeer, R. Haeb-Umbach, 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.” <i>International Workshop on Acoustic Signal Enhancement (IWAENC 2012)</i>, 2012.","chicago":"Jacob, Florian, Joerg Schmalenstroeer, and Reinhold Haeb-Umbach. “Microphone Array Position Self-Calibration from Reverberant Speech Input.” In <i>International Workshop on Acoustic Signal Enhancement (IWAENC 2012)</i>, 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: <i>International Workshop on Acoustic Signal Enhancement (IWAENC 2012)</i>. ; 2012."},"year":"2012","date_created":"2019-07-12T05:29:08Z","author":[{"last_name":"Jacob","full_name":"Jacob, Florian","first_name":"Florian"},{"id":"460","full_name":"Schmalenstroeer, Joerg","last_name":"Schmalenstroeer","first_name":"Joerg"},{"id":"242","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach","first_name":"Reinhold"}],"oa":"1","date_updated":"2023-10-26T08:10:52Z","main_file_link":[{"url":"https://groups.uni-paderborn.de/nt/pubs/2012/JaScHa12.pdf","open_access":"1"}],"title":"Microphone Array Position Self-Calibration from Reverberant Speech Input","publication":"International Workshop on Acoustic Signal Enhancement (IWAENC 2012)","type":"conference","status":"public","abstract":[{"lang":"eng","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."}],"department":[{"_id":"54"}],"user_id":"460","_id":"11833","language":[{"iso":"eng"}],"keyword":["Unsupervised","geometry calibration","microphone arrays","position self-calibration"]},{"date_updated":"2023-10-16T13:47:23Z","publisher":"Association for Computing Machinery","date_created":"2023-08-04T15:52:42Z","author":[{"full_name":"Brockhoff, Dimo","last_name":"Brockhoff","first_name":"Dimo"},{"last_name":"Wagner","full_name":"Wagner, Tobias","first_name":"Tobias"},{"orcid":"0000-0002-9788-8282","last_name":"Trautmann","id":"100740","full_name":"Trautmann, Heike","first_name":"Heike"}],"title":"On the Properties of the R2 Indicator","doi":"10.1145/2330163.2330230","publication_identifier":{"isbn":["9781450311779"]},"place":"New York, NY, USA","year":"2012","citation":{"ieee":"D. Brockhoff, T. Wagner, and H. Trautmann, “On the Properties of the R2 Indicator,” in <i>Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation</i>, 2012, pp. 465–472, doi: <a href=\"https://doi.org/10.1145/2330163.2330230\">10.1145/2330163.2330230</a>.","chicago":"Brockhoff, Dimo, Tobias Wagner, and Heike Trautmann. “On the Properties of the R2 Indicator.” In <i>Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation</i>, 465–472. GECCO ’12. New York, NY, USA: Association for Computing Machinery, 2012. <a href=\"https://doi.org/10.1145/2330163.2330230\">https://doi.org/10.1145/2330163.2330230</a>.","ama":"Brockhoff D, Wagner T, Trautmann H. On the Properties of the R2 Indicator. In: <i>Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation</i>. GECCO ’12. Association for Computing Machinery; 2012:465–472. doi:<a href=\"https://doi.org/10.1145/2330163.2330230\">10.1145/2330163.2330230</a>","apa":"Brockhoff, D., Wagner, T., &#38; Trautmann, H. (2012). On the Properties of the R2 Indicator. <i>Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation</i>, 465–472. <a href=\"https://doi.org/10.1145/2330163.2330230\">https://doi.org/10.1145/2330163.2330230</a>","bibtex":"@inproceedings{Brockhoff_Wagner_Trautmann_2012, place={New York, NY, USA}, series={GECCO ’12}, title={On the Properties of the R2 Indicator}, DOI={<a href=\"https://doi.org/10.1145/2330163.2330230\">10.1145/2330163.2330230</a>}, 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} }","mla":"Brockhoff, Dimo, et al. “On the Properties of the R2 Indicator.” <i>Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation</i>, Association for Computing Machinery, 2012, pp. 465–472, doi:<a href=\"https://doi.org/10.1145/2330163.2330230\">10.1145/2330163.2330230</a>.","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."},"page":"465–472","_id":"46397","series_title":"GECCO ’12","user_id":"15504","department":[{"_id":"34"},{"_id":"819"}],"keyword":["hypervolume indicator","multiobjective optimization","performance assessment","r2 indicator"],"language":[{"iso":"eng"}],"type":"conference","publication":"Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation","abstract":[{"lang":"eng","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."}],"status":"public"},{"publication_identifier":{"isbn":["9781450311779"]},"page":"313–320","citation":{"apa":"Bischl, B., Mersmann, O., Trautmann, H., &#38; Preuß, M. (2012). Algorithm Selection Based on Exploratory Landscape Analysis and Cost-Sensitive Learning. <i>Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation</i>, 313–320. <a href=\"https://doi.org/10.1145/2330163.2330209\">https://doi.org/10.1145/2330163.2330209</a>","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={<a href=\"https://doi.org/10.1145/2330163.2330209\">10.1145/2330163.2330209</a>}, 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} }","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.","mla":"Bischl, Bernd, et al. “Algorithm Selection Based on Exploratory Landscape Analysis and Cost-Sensitive Learning.” <i>Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation</i>, Association for Computing Machinery, 2012, pp. 313–320, doi:<a href=\"https://doi.org/10.1145/2330163.2330209\">10.1145/2330163.2330209</a>.","ama":"Bischl B, Mersmann O, Trautmann H, Preuß M. Algorithm Selection Based on Exploratory Landscape Analysis and Cost-Sensitive Learning. In: <i>Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation</i>. GECCO ’12. Association for Computing Machinery; 2012:313–320. doi:<a href=\"https://doi.org/10.1145/2330163.2330209\">10.1145/2330163.2330209</a>","ieee":"B. Bischl, O. Mersmann, H. Trautmann, and M. Preuß, “Algorithm Selection Based on Exploratory Landscape Analysis and Cost-Sensitive Learning,” in <i>Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation</i>, 2012, pp. 313–320, doi: <a href=\"https://doi.org/10.1145/2330163.2330209\">10.1145/2330163.2330209</a>.","chicago":"Bischl, Bernd, Olaf Mersmann, Heike Trautmann, and Mike Preuß. “Algorithm Selection Based on Exploratory Landscape Analysis and Cost-Sensitive Learning.” In <i>Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation</i>, 313–320. GECCO ’12. New York, NY, USA: Association for Computing Machinery, 2012. <a href=\"https://doi.org/10.1145/2330163.2330209\">https://doi.org/10.1145/2330163.2330209</a>."},"year":"2012","place":"New York, NY, USA","date_created":"2023-08-04T15:51:56Z","author":[{"last_name":"Bischl","full_name":"Bischl, Bernd","first_name":"Bernd"},{"last_name":"Mersmann","full_name":"Mersmann, Olaf","first_name":"Olaf"},{"first_name":"Heike","orcid":"0000-0002-9788-8282","last_name":"Trautmann","full_name":"Trautmann, Heike","id":"100740"},{"last_name":"Preuß","full_name":"Preuß, Mike","first_name":"Mike"}],"date_updated":"2023-10-16T13:48:48Z","publisher":"Association for Computing Machinery","doi":"10.1145/2330163.2330209","title":"Algorithm Selection Based on Exploratory Landscape Analysis and Cost-Sensitive Learning","publication":"Proceedings of the 14th Annual Conference on Genetic and Evolutionary Computation","type":"conference","status":"public","abstract":[{"lang":"eng","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."}],"department":[{"_id":"34"},{"_id":"819"}],"series_title":"GECCO ’12","user_id":"15504","_id":"46396","language":[{"iso":"eng"}],"keyword":["machine learning","exploratory landscape analysis","fitness landscape","benchmarking","evolutionary optimization","bbob test set","algorithm selection"]},{"language":[{"iso":"eng"}],"keyword":["exploratory landscape analysis","evolutionary optimization","fitness landscape","benchmarking","BBOB test set"],"user_id":"15504","series_title":"GECCO ’11","department":[{"_id":"34"},{"_id":"819"}],"_id":"46401","status":"public","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"}],"type":"conference","publication":"Proceedings of the 13th Annual Conference on Genetic and Evolutionary Computation","doi":"10.1145/2001576.2001690","title":"Exploratory Landscape Analysis","date_created":"2023-08-04T15:58:22Z","author":[{"first_name":"Olaf","full_name":"Mersmann, Olaf","last_name":"Mersmann"},{"last_name":"Bischl","full_name":"Bischl, Bernd","first_name":"Bernd"},{"full_name":"Trautmann, Heike","id":"100740","last_name":"Trautmann","orcid":"0000-0002-9788-8282","first_name":"Heike"},{"last_name":"Preuss","full_name":"Preuss, Mike","first_name":"Mike"},{"full_name":"Weihs, Claus","last_name":"Weihs","first_name":"Claus"},{"last_name":"Rudolph","full_name":"Rudolph, Günter","first_name":"Günter"}],"date_updated":"2023-10-16T13:54:34Z","publisher":"Association for Computing Machinery","citation":{"ama":"Mersmann O, Bischl B, Trautmann H, Preuss M, Weihs C, Rudolph G. Exploratory Landscape Analysis. In: <i>Proceedings of the 13th Annual Conference on Genetic and Evolutionary Computation</i>. GECCO ’11. Association for Computing Machinery; 2011:829–836. doi:<a href=\"https://doi.org/10.1145/2001576.2001690\">10.1145/2001576.2001690</a>","chicago":"Mersmann, Olaf, Bernd Bischl, Heike Trautmann, Mike Preuss, Claus Weihs, and Günter Rudolph. “Exploratory Landscape Analysis.” In <i>Proceedings of the 13th Annual Conference on Genetic and Evolutionary Computation</i>, 829–836. GECCO ’11. New York, NY, USA: Association for Computing Machinery, 2011. <a href=\"https://doi.org/10.1145/2001576.2001690\">https://doi.org/10.1145/2001576.2001690</a>.","ieee":"O. Mersmann, B. Bischl, H. Trautmann, M. Preuss, C. Weihs, and G. Rudolph, “Exploratory Landscape Analysis,” in <i>Proceedings of the 13th Annual Conference on Genetic and Evolutionary Computation</i>, 2011, pp. 829–836, doi: <a href=\"https://doi.org/10.1145/2001576.2001690\">10.1145/2001576.2001690</a>.","bibtex":"@inproceedings{Mersmann_Bischl_Trautmann_Preuss_Weihs_Rudolph_2011, place={New York, NY, USA}, series={GECCO ’11}, title={Exploratory Landscape Analysis}, DOI={<a href=\"https://doi.org/10.1145/2001576.2001690\">10.1145/2001576.2001690</a>}, 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} }","mla":"Mersmann, Olaf, et al. “Exploratory Landscape Analysis.” <i>Proceedings of the 13th Annual Conference on Genetic and Evolutionary Computation</i>, Association for Computing Machinery, 2011, pp. 829–836, doi:<a href=\"https://doi.org/10.1145/2001576.2001690\">10.1145/2001576.2001690</a>.","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.","apa":"Mersmann, O., Bischl, B., Trautmann, H., Preuss, M., Weihs, C., &#38; Rudolph, G. (2011). Exploratory Landscape Analysis. <i>Proceedings of the 13th Annual Conference on Genetic and Evolutionary Computation</i>, 829–836. <a href=\"https://doi.org/10.1145/2001576.2001690\">https://doi.org/10.1145/2001576.2001690</a>"},"page":"829–836","year":"2011","place":"New York, NY, USA","publication_identifier":{"isbn":["9781450305570"]}},{"department":[{"_id":"367"}],"user_id":"15387","series_title":"SCSC '10","_id":"23858","language":[{"iso":"eng"}],"keyword":["process optimization","polymer engineering","compounding","twin screw extruder","simulation"],"publication":"Proceedings of the 2010 Summer Computer Simulation Conference","type":"conference","status":"public","abstract":[{"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.","lang":"eng"}],"date_created":"2021-09-07T10:31:48Z","author":[{"id":"15387","full_name":"Kretzschmar, Nils","last_name":"Kretzschmar","first_name":"Nils"},{"first_name":"Volker","id":"20530","full_name":"Schöppner, Volker","last_name":"Schöppner"}],"date_updated":"2022-01-06T06:56:02Z","publisher":"Society for Computer Simulation International","title":"Simulating Tightly Intermeshing, Co-Rotating Twin Screw Extruders with SIGMA","page":"133–140","citation":{"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} }","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.","mla":"Kretzschmar, Nils, and Volker Schöppner. “Simulating Tightly Intermeshing, Co-Rotating Twin Screw Extruders with SIGMA.” <i>Proceedings of the 2010 Summer Computer Simulation Conference</i>, Society for Computer Simulation International, 2010, pp. 133–140.","apa":"Kretzschmar, N., &#38; Schöppner, V. (2010). Simulating Tightly Intermeshing, Co-Rotating Twin Screw Extruders with SIGMA. In <i>Proceedings of the 2010 Summer Computer Simulation Conference</i> (pp. 133–140). San Diego, CA, USA: Society for Computer Simulation International.","chicago":"Kretzschmar, Nils, and Volker Schöppner. “Simulating Tightly Intermeshing, Co-Rotating Twin Screw Extruders with SIGMA.” In <i>Proceedings of the 2010 Summer Computer Simulation Conference</i>, 133–140. SCSC ’10. San Diego, CA, USA: Society for Computer Simulation International, 2010.","ieee":"N. Kretzschmar and V. Schöppner, “Simulating Tightly Intermeshing, Co-Rotating Twin Screw Extruders with SIGMA,” in <i>Proceedings of the 2010 Summer Computer Simulation Conference</i>, 2010, pp. 133–140.","ama":"Kretzschmar N, Schöppner V. Simulating Tightly Intermeshing, Co-Rotating Twin Screw Extruders with SIGMA. In: <i>Proceedings of the 2010 Summer Computer Simulation Conference</i>. SCSC ’10. San Diego, CA, USA: Society for Computer Simulation International; 2010:133–140."},"year":"2010","place":"San Diego, CA, USA"},{"citation":{"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} }","mla":"Finkbeiner, Josef, et al. “Applying Heuristic Methods for Job Scheduling in Storage Markets.” <i>18th European Conference on Information Systems (ECIS 2010)</i>, 2010.","short":"J. Finkbeiner, C. Bodenstein, G. Schryen, D. Neumann, in: 18th European Conference on Information Systems (ECIS 2010), 2010.","apa":"Finkbeiner, J., Bodenstein, C., Schryen, G., &#38; Neumann, D. (2010). Applying heuristic methods for job scheduling in storage markets. In <i>18th European Conference on Information Systems (ECIS 2010)</i>.","ieee":"J. Finkbeiner, C. Bodenstein, G. Schryen, and D. Neumann, “Applying heuristic methods for job scheduling in storage markets,” in <i>18th European Conference on Information Systems (ECIS 2010)</i>, 2010.","chicago":"Finkbeiner, Josef, Christian Bodenstein, Guido Schryen, and Dirk Neumann. “Applying Heuristic Methods for Job Scheduling in Storage Markets.” In <i>18th European Conference on Information Systems (ECIS 2010)</i>, 2010.","ama":"Finkbeiner J, Bodenstein C, Schryen G, Neumann D. Applying heuristic methods for job scheduling in storage markets. In: <i>18th European Conference on Information Systems (ECIS 2010)</i>. ; 2010."},"year":"2010","has_accepted_license":"1","title":"Applying heuristic methods for job scheduling in storage markets","date_created":"2018-11-14T15:45:11Z","author":[{"first_name":"Josef","last_name":"Finkbeiner","full_name":"Finkbeiner, Josef"},{"first_name":"Christian","last_name":"Bodenstein","full_name":"Bodenstein, Christian"},{"last_name":"Schryen","full_name":"Schryen, Guido","id":"72850","first_name":"Guido"},{"full_name":"Neumann, Dirk","last_name":"Neumann","first_name":"Dirk"}],"date_updated":"2022-01-06T07:02:32Z","oa":"1","file":[{"date_created":"2018-12-11T15:21:06Z","creator":"hsiemes","date_updated":"2018-12-13T15:19:40Z","file_name":"s1-ln7055316-1881058806-1939656818Hwf-1884822883IdV-5442784107055316PDF_HI0001.pdf","access_level":"open_access","file_id":"6188","file_size":171336,"content_type":"application/pdf","relation":"main_file"}],"status":"public","abstract":[{"lang":"eng","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."}],"type":"conference","publication":"18th European Conference on Information Systems (ECIS 2010)","file_date_updated":"2018-12-13T15:19:40Z","extern":"1","language":[{"iso":"eng"}],"ddc":["000"],"keyword":["Decision Support System","Algorithms","Optimization","Market Engineering"],"user_id":"61579","department":[{"_id":"277"}],"_id":"5685"}]