--- _id: '215' abstract: - lang: eng text: 'We present three robust overlay networks: First, we present a network that organizes the nodes into an expander and is resistant to even massive adversarial churn. Second, we develop a network based on the hypercube that maintains connectivity under adversarial DoS-attacks. For the DoS-attacks we use the notion of a Omega(log log n)-late adversary which only has access to topological information that is at least Omega(log log n) rounds old. Finally, we develop a network that combines both churn- and DoS-resistance. The networks gain their robustness through constant network reconfiguration, i.e., the topology of the networks changes constantly. Our reconguration algorithms are based on node sampling primitives for expanders and hypercubes that allow each node to sample a logarithmic number of nodes uniformly at random in O(log log n) communication rounds. These primitives are specific to overlay networks and their optimal runtime represents an exponential improvement over known techniques. Our results have a wide range of applications, for example in the area of scalable and robust peer-to-peer systems.' author: - first_name: Maximilian full_name: Drees, Maximilian last_name: Drees - first_name: Robert full_name: Gmyr, Robert last_name: Gmyr - first_name: Christian full_name: Scheideler, Christian id: '20792' last_name: Scheideler citation: ama: 'Drees M, Gmyr R, Scheideler C. Churn- and DoS-resistant Overlay Networks Based on Network Reconfiguration. In: Proceedings of the 28th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA). ; 2016:417--427. doi:10.1145/2935764.2935783' apa: Drees, M., Gmyr, R., & Scheideler, C. (2016). Churn- and DoS-resistant Overlay Networks Based on Network Reconfiguration. In Proceedings of the 28th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA) (pp. 417--427). https://doi.org/10.1145/2935764.2935783 bibtex: '@inproceedings{Drees_Gmyr_Scheideler_2016, title={Churn- and DoS-resistant Overlay Networks Based on Network Reconfiguration}, DOI={10.1145/2935764.2935783}, booktitle={Proceedings of the 28th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA)}, author={Drees, Maximilian and Gmyr, Robert and Scheideler, Christian}, year={2016}, pages={417--427} }' chicago: Drees, Maximilian, Robert Gmyr, and Christian Scheideler. “Churn- and DoS-Resistant Overlay Networks Based on Network Reconfiguration.” In Proceedings of the 28th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA), 417--427, 2016. https://doi.org/10.1145/2935764.2935783. ieee: M. Drees, R. Gmyr, and C. Scheideler, “Churn- and DoS-resistant Overlay Networks Based on Network Reconfiguration,” in Proceedings of the 28th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA), 2016, pp. 417--427. mla: Drees, Maximilian, et al. “Churn- and DoS-Resistant Overlay Networks Based on Network Reconfiguration.” Proceedings of the 28th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA), 2016, pp. 417--427, doi:10.1145/2935764.2935783. short: 'M. Drees, R. Gmyr, C. Scheideler, in: Proceedings of the 28th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA), 2016, pp. 417--427.' date_created: 2017-10-17T12:41:33Z date_updated: 2022-01-06T06:55:02Z ddc: - '040' department: - _id: '79' - _id: '63' doi: 10.1145/2935764.2935783 file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-21T10:41:40Z date_updated: 2018-03-21T10:41:40Z file_id: '1518' file_name: 215-SPAA16-Drees_Gmyr_Scheideler.pdf file_size: 352996 relation: main_file success: 1 file_date_updated: 2018-03-21T10:41:40Z has_accepted_license: '1' language: - iso: eng page: 417--427 project: - _id: '1' name: SFB 901 - _id: '13' name: SFB 901 - Subprojekt C1 - _id: '4' name: SFB 901 - Project Area C publication: Proceedings of the 28th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA) status: public title: Churn- and DoS-resistant Overlay Networks Based on Network Reconfiguration type: conference user_id: '14955' year: '2016' ... --- _id: '17655' author: - first_name: Gleb full_name: Polevoy, Gleb id: '83983' last_name: Polevoy - first_name: M.M. full_name: de Weerdt, M.M. last_name: de Weerdt - first_name: C.M. full_name: Jonker, C.M. last_name: Jonker citation: ama: 'Polevoy G, de Weerdt MM, Jonker CM. The Game of Reciprocation Habits. In: Proceedings of the 2016 European Conference on Artificial Intelligence. Vol Volume 285: ECAI 2016. Frontiers in Artificial Intelligence and Applications. ; 2016:417-425. doi:10.3233/978-1-61499-672-9-417' apa: 'Polevoy, G., de Weerdt, M. M., & Jonker, C. M. (2016). The Game of Reciprocation Habits. In Proceedings of the 2016 European Conference on Artificial Intelligence (Vol. Volume 285: ECAI 2016, pp. 417–425). https://doi.org/10.3233/978-1-61499-672-9-417' bibtex: '@inproceedings{Polevoy_de Weerdt_Jonker_2016, series={Frontiers in Artificial Intelligence and Applications}, title={The Game of Reciprocation Habits}, volume={Volume 285: ECAI 2016}, DOI={10.3233/978-1-61499-672-9-417}, booktitle={Proceedings of the 2016 European Conference on Artificial Intelligence}, author={Polevoy, Gleb and de Weerdt, M.M. and Jonker, C.M.}, year={2016}, pages={417–425}, collection={Frontiers in Artificial Intelligence and Applications} }' chicago: 'Polevoy, Gleb, M.M. de Weerdt, and C.M. Jonker. “The Game of Reciprocation Habits.” In Proceedings of the 2016 European Conference on Artificial Intelligence, Volume 285: ECAI 2016:417–25. Frontiers in Artificial Intelligence and Applications, 2016. https://doi.org/10.3233/978-1-61499-672-9-417.' ieee: 'G. Polevoy, M. M. de Weerdt, and C. M. Jonker, “The Game of Reciprocation Habits,” in Proceedings of the 2016 European Conference on Artificial Intelligence, 2016, vol. Volume 285: ECAI 2016, pp. 417–425.' mla: 'Polevoy, Gleb, et al. “The Game of Reciprocation Habits.” Proceedings of the 2016 European Conference on Artificial Intelligence, vol. Volume 285: ECAI 2016, 2016, pp. 417–25, doi:10.3233/978-1-61499-672-9-417.' short: 'G. Polevoy, M.M. de Weerdt, C.M. Jonker, in: Proceedings of the 2016 European Conference on Artificial Intelligence, 2016, pp. 417–425.' date_created: 2020-08-06T15:20:30Z date_updated: 2022-01-06T06:53:16Z department: - _id: '63' - _id: '541' doi: 10.3233/978-1-61499-672-9-417 extern: '1' keyword: - agents - action - repeated reciprocation - fixed - floating - network - Nash equilibrium - social welfare - price of anarchy - price of stability - convex combination language: - iso: eng page: 417-425 publication: Proceedings of the 2016 European Conference on Artificial Intelligence series_title: Frontiers in Artificial Intelligence and Applications status: public title: The Game of Reciprocation Habits type: conference user_id: '83983' volume: 'Volume 285: ECAI 2016' year: '2016' ... --- _id: '17656' author: - first_name: Gleb full_name: Polevoy, Gleb id: '83983' last_name: Polevoy - first_name: Mathijs full_name: de Weerdt, Mathijs last_name: de Weerdt - first_name: Catholijn full_name: Jonker, Catholijn last_name: Jonker citation: ama: 'Polevoy G, de Weerdt M, Jonker C. The Convergence of Reciprocation. In: Proceedings of the 2016 International Conference on Autonomous Agents and Multiagent Systems. AAMAS ’16. Richland, SC: International Foundation for Autonomous Agents and Multiagent Systems; 2016:1431-1432.' apa: 'Polevoy, G., de Weerdt, M., & Jonker, C. (2016). The Convergence of Reciprocation. In Proceedings of the 2016 International Conference on Autonomous Agents and Multiagent Systems (pp. 1431–1432). Richland, SC: International Foundation for Autonomous Agents and Multiagent Systems.' bibtex: '@inproceedings{Polevoy_de Weerdt_Jonker_2016, place={Richland, SC}, series={AAMAS ’16}, title={The Convergence of Reciprocation}, booktitle={Proceedings of the 2016 International Conference on Autonomous Agents and Multiagent Systems}, publisher={International Foundation for Autonomous Agents and Multiagent Systems}, author={Polevoy, Gleb and de Weerdt, Mathijs and Jonker, Catholijn}, year={2016}, pages={1431–1432}, collection={AAMAS ’16} }' chicago: 'Polevoy, Gleb, Mathijs de Weerdt, and Catholijn Jonker. “The Convergence of Reciprocation.” In Proceedings of the 2016 International Conference on Autonomous Agents and Multiagent Systems, 1431–32. AAMAS ’16. Richland, SC: International Foundation for Autonomous Agents and Multiagent Systems, 2016.' ieee: G. Polevoy, M. de Weerdt, and C. Jonker, “The Convergence of Reciprocation,” in Proceedings of the 2016 International Conference on Autonomous Agents and Multiagent Systems, 2016, pp. 1431–1432. mla: Polevoy, Gleb, et al. “The Convergence of Reciprocation.” Proceedings of the 2016 International Conference on Autonomous Agents and Multiagent Systems, International Foundation for Autonomous Agents and Multiagent Systems, 2016, pp. 1431–32. short: 'G. Polevoy, M. de Weerdt, C. Jonker, in: Proceedings of the 2016 International Conference on Autonomous Agents and Multiagent Systems, International Foundation for Autonomous Agents and Multiagent Systems, Richland, SC, 2016, pp. 1431–1432.' date_created: 2020-08-06T15:20:45Z date_updated: 2022-01-06T06:53:16Z department: - _id: '63' - _id: '541' extern: '1' keyword: - agent's influence - behavior - convergence - perron-frobenius - reciprocal interaction - repeated reciprocation language: - iso: eng page: 1431-1432 place: Richland, SC publication: Proceedings of the 2016 International Conference on Autonomous Agents and Multiagent Systems publication_identifier: isbn: - 978-1-4503-4239-1 publisher: International Foundation for Autonomous Agents and Multiagent Systems series_title: AAMAS '16 status: public title: The Convergence of Reciprocation type: conference user_id: '83983' year: '2016' ... --- _id: '177' abstract: - lang: eng text: 'Efficiently parallelizable parameterized problems have been classified as being either in the class FPP (fixed-parameter parallelizable) or the class PNC (parameterized analog of NC), which contains FPP as a subclass. In this paper, we propose a more restrictive class of parallelizable parameterized problems called fixed-parameter parallel-tractable (FPPT). For a problem to be in FPPT, it should possess an efficient parallel algorithm not only from a theoretical standpoint but in practice as well. The primary distinction between FPPT and FPP is the parallel processor utilization, which is bounded by a polynomial function in the case of FPPT. We initiate the study of FPPT with the well-known k-vertex cover problem. In particular, we present a parallel algorithm that outperforms the best known parallel algorithm for this problem: using O(m) instead of O(n2) parallel processors, the running time improves from 4logn+O(kk) to O(k⋅log3n), where m is the number of edges, n is the number of vertices of the input graph, and k is an upper bound of the size of the sought vertex cover. We also note that a few P-complete problems fall into FPPT including the monotone circuit value problem (MCV) when the underlying graphs are bounded by a constant Euler genus.' author: - first_name: Faisal N. full_name: Abu-Khzam, Faisal N. last_name: Abu-Khzam - first_name: Shouwei full_name: Li, Shouwei last_name: Li - first_name: Christine full_name: Markarian, Christine id: '37612' last_name: Markarian - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide - first_name: Pavel full_name: Podlipyan, Pavel last_name: Podlipyan citation: ama: 'Abu-Khzam FN, Li S, Markarian C, Meyer auf der Heide F, Podlipyan P. On the Parameterized Parallel Complexity and the Vertex Cover Problem. In: Proceedings of the 10th International Conference on Combinatorial Optimization and Applications (COCOA). LNCS. ; 2016:477-488. doi:10.1007/978-3-319-48749-6_35' apa: Abu-Khzam, F. N., Li, S., Markarian, C., Meyer auf der Heide, F., & Podlipyan, P. (2016). On the Parameterized Parallel Complexity and the Vertex Cover Problem. In Proceedings of the 10th International Conference on Combinatorial Optimization and Applications (COCOA) (pp. 477–488). https://doi.org/10.1007/978-3-319-48749-6_35 bibtex: '@inproceedings{Abu-Khzam_Li_Markarian_Meyer auf der Heide_Podlipyan_2016, series={LNCS}, title={On the Parameterized Parallel Complexity and the Vertex Cover Problem}, DOI={10.1007/978-3-319-48749-6_35}, booktitle={Proceedings of the 10th International Conference on Combinatorial Optimization and Applications (COCOA)}, author={Abu-Khzam, Faisal N. and Li, Shouwei and Markarian, Christine and Meyer auf der Heide, Friedhelm and Podlipyan, Pavel}, year={2016}, pages={477–488}, collection={LNCS} }' chicago: Abu-Khzam, Faisal N., Shouwei Li, Christine Markarian, Friedhelm Meyer auf der Heide, and Pavel Podlipyan. “On the Parameterized Parallel Complexity and the Vertex Cover Problem.” In Proceedings of the 10th International Conference on Combinatorial Optimization and Applications (COCOA), 477–88. LNCS, 2016. https://doi.org/10.1007/978-3-319-48749-6_35. ieee: F. N. Abu-Khzam, S. Li, C. Markarian, F. Meyer auf der Heide, and P. Podlipyan, “On the Parameterized Parallel Complexity and the Vertex Cover Problem,” in Proceedings of the 10th International Conference on Combinatorial Optimization and Applications (COCOA), 2016, pp. 477–488. mla: Abu-Khzam, Faisal N., et al. “On the Parameterized Parallel Complexity and the Vertex Cover Problem.” Proceedings of the 10th International Conference on Combinatorial Optimization and Applications (COCOA), 2016, pp. 477–88, doi:10.1007/978-3-319-48749-6_35. short: 'F.N. Abu-Khzam, S. Li, C. Markarian, F. Meyer auf der Heide, P. Podlipyan, in: Proceedings of the 10th International Conference on Combinatorial Optimization and Applications (COCOA), 2016, pp. 477–488.' date_created: 2017-10-17T12:41:26Z date_updated: 2022-01-06T06:53:17Z ddc: - '000' department: - _id: '63' doi: 10.1007/978-3-319-48749-6_35 file: - access_level: closed content_type: application/pdf creator: ups date_created: 2018-11-02T14:15:18Z date_updated: 2018-11-02T14:15:18Z file_id: '5266' file_name: OnTheParameterizedParallelComp.pdf file_size: 293345 relation: main_file success: 1 file_date_updated: 2018-11-02T14:15:18Z has_accepted_license: '1' language: - iso: eng page: 477-488 project: - _id: '1' name: SFB 901 - _id: '5' name: SFB 901 - Subprojekt A1 - _id: '2' name: SFB 901 - Project Area A publication: Proceedings of the 10th International Conference on Combinatorial Optimization and Applications (COCOA) series_title: LNCS status: public title: On the Parameterized Parallel Complexity and the Vertex Cover Problem type: conference user_id: '477' year: '2016' ... --- _id: '187' citation: ama: Meyer auf der Heide F, ed. Introduction to the Special Issue on SPAA 2014.; 2016. doi:10.1145/2936716 apa: Meyer auf der Heide, F. (Ed.). (2016). Introduction to the Special Issue on SPAA 2014. Transactions on Parallel Computing (TOPC). https://doi.org/10.1145/2936716 bibtex: '@book{Meyer auf der Heide_2016, title={Introduction to the Special Issue on SPAA 2014}, DOI={10.1145/2936716}, number={1}, journal={Transactions on Parallel Computing (TOPC)}, year={2016} }' chicago: Meyer auf der Heide, Friedhelm, ed. Introduction to the Special Issue on SPAA 2014. Transactions on Parallel Computing (TOPC), 2016. https://doi.org/10.1145/2936716. ieee: F. Meyer auf der Heide, Ed., Introduction to the Special Issue on SPAA 2014, no. 1. 2016. mla: Meyer auf der Heide, Friedhelm, editor. “Introduction to the Special Issue on SPAA 2014.” Transactions on Parallel Computing (TOPC), no. 1, 2016, doi:10.1145/2936716. short: F. Meyer auf der Heide, ed., Introduction to the Special Issue on SPAA 2014, 2016. date_created: 2017-10-17T12:41:28Z date_updated: 2022-01-06T06:53:51Z ddc: - '040' department: - _id: '63' doi: 10.1145/2936716 editor: - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-21T12:31:42Z date_updated: 2018-03-21T12:31:42Z file_id: '1531' file_name: 187-a1-heide.pdf file_size: 34053 relation: main_file success: 1 file_date_updated: 2018-03-21T12:31:42Z has_accepted_license: '1' issue: '1' page: '1' project: - _id: '1' name: SFB 901 - _id: '5' name: SFB 901 - Subprojekt A1 - _id: '2' name: SFB 901 - Project Area A publication: Transactions on Parallel Computing (TOPC) status: public title: Introduction to the Special Issue on SPAA 2014 type: journal_editor user_id: '15504' year: '2016' ... --- _id: '207' abstract: - lang: eng text: We consider a scheduling problem where machines need to be rented from the cloud in order to process jobs. There are two types of machines available which can be rented for machine-type dependent prices and for arbitrary durations. However, a machine-type dependent setup time is required before a machine is available for processing. Jobs arrive online over time, have machine-type dependent sizes and have individual deadlines. The objective is to rent machines and schedule jobs so as to meet all deadlines while minimizing the rental cost. Since we observe the slack of jobs to have a fundamental influence on the competitiveness, we study the model when instances are parameterized by their (minimum) slack. An instance is called to have a slack of $\beta$ if, for all jobs, the difference between the job's release time and the latest point in time at which it needs to be started is at least $\beta$. While for $\beta series = {LNCS} author: - first_name: Alexander full_name: Mäcker, Alexander id: '13536' last_name: Mäcker - first_name: Manuel full_name: Malatyali, Manuel last_name: Malatyali - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide - first_name: Sören full_name: Riechers, Sören last_name: Riechers citation: ama: 'Mäcker A, Malatyali M, Meyer auf der Heide F, Riechers S. Cost-efficient Scheduling on Machines from the Cloud. In: Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA). ; 2016:578--592. doi:10.1007/978-3-319-48749-6_42' apa: Mäcker, A., Malatyali, M., Meyer auf der Heide, F., & Riechers, S. (2016). Cost-efficient Scheduling on Machines from the Cloud. In Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA) (pp. 578--592). https://doi.org/10.1007/978-3-319-48749-6_42 bibtex: '@inproceedings{Mäcker_Malatyali_Meyer auf der Heide_Riechers_2016, title={Cost-efficient Scheduling on Machines from the Cloud}, DOI={10.1007/978-3-319-48749-6_42}, booktitle={Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA)}, author={Mäcker, Alexander and Malatyali, Manuel and Meyer auf der Heide, Friedhelm and Riechers, Sören}, year={2016}, pages={578--592} }' chicago: Mäcker, Alexander, Manuel Malatyali, Friedhelm Meyer auf der Heide, and Sören Riechers. “Cost-Efficient Scheduling on Machines from the Cloud.” In Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA), 578--592, 2016. https://doi.org/10.1007/978-3-319-48749-6_42. ieee: A. Mäcker, M. Malatyali, F. Meyer auf der Heide, and S. Riechers, “Cost-efficient Scheduling on Machines from the Cloud,” in Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA), 2016, pp. 578--592. mla: Mäcker, Alexander, et al. “Cost-Efficient Scheduling on Machines from the Cloud.” Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA), 2016, pp. 578--592, doi:10.1007/978-3-319-48749-6_42. short: 'A. Mäcker, M. Malatyali, F. Meyer auf der Heide, S. Riechers, in: Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA), 2016, pp. 578--592.' date_created: 2017-10-17T12:41:32Z date_updated: 2022-01-06T06:54:33Z ddc: - '000' department: - _id: '63' doi: 10.1007/978-3-319-48749-6_42 file: - access_level: closed content_type: application/pdf creator: ups date_created: 2018-11-02T14:18:51Z date_updated: 2018-11-02T14:18:51Z file_id: '5268' file_name: Cost-EfficientSchedulingOnMach.pdf file_size: 608614 relation: main_file success: 1 file_date_updated: 2018-11-02T14:18:51Z has_accepted_license: '1' language: - iso: eng page: 578--592 project: - _id: '1' name: SFB 901 - _id: '16' name: SFB 901 - Subprojekt C4 - _id: '4' name: SFB 901 - Project Area C publication: Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA) status: public title: Cost-efficient Scheduling on Machines from the Cloud type: conference user_id: '477' year: '2016' ... --- _id: '209' abstract: - lang: eng text: We study a new class of games which generalizes congestion games and its bottleneck variant. We introduce congestion games with mixed objectives to model network scenarios in which players seek to optimize for latency and bandwidths alike. We characterize the existence of pure Nash equilibria (PNE) and the convergence of improvement dynamics. For games that do not possess PNE we give bounds on the approximation ratio of approximate pure Nash equilibria. author: - first_name: Matthias full_name: Feldotto, Matthias id: '14052' last_name: Feldotto orcid: 0000-0003-1348-6516 - first_name: Lennart full_name: Leder, Lennart last_name: Leder - first_name: Alexander full_name: Skopalik, Alexander id: '40384' last_name: Skopalik citation: ama: 'Feldotto M, Leder L, Skopalik A. Congestion Games with Mixed Objectives. In: Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA). LNCS. ; 2016:655--669. doi:10.1007/978-3-319-48749-6_47' apa: Feldotto, M., Leder, L., & Skopalik, A. (2016). Congestion Games with Mixed Objectives. In Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA) (pp. 655--669). https://doi.org/10.1007/978-3-319-48749-6_47 bibtex: '@inproceedings{Feldotto_Leder_Skopalik_2016, series={LNCS}, title={Congestion Games with Mixed Objectives}, DOI={10.1007/978-3-319-48749-6_47}, booktitle={Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA)}, author={Feldotto, Matthias and Leder, Lennart and Skopalik, Alexander}, year={2016}, pages={655--669}, collection={LNCS} }' chicago: Feldotto, Matthias, Lennart Leder, and Alexander Skopalik. “Congestion Games with Mixed Objectives.” In Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA), 655--669. LNCS, 2016. https://doi.org/10.1007/978-3-319-48749-6_47. ieee: M. Feldotto, L. Leder, and A. Skopalik, “Congestion Games with Mixed Objectives,” in Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA), 2016, pp. 655--669. mla: Feldotto, Matthias, et al. “Congestion Games with Mixed Objectives.” Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA), 2016, pp. 655--669, doi:10.1007/978-3-319-48749-6_47. short: 'M. Feldotto, L. Leder, A. Skopalik, in: Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA), 2016, pp. 655--669.' date_created: 2017-10-17T12:41:32Z date_updated: 2022-01-06T06:54:41Z ddc: - '000' department: - _id: '63' - _id: '541' doi: 10.1007/978-3-319-48749-6_47 external_id: arxiv: - '1607.05143' file: - access_level: closed content_type: application/pdf creator: feldi date_created: 2018-10-31T17:03:44Z date_updated: 2018-10-31T17:03:44Z file_id: '5233' file_name: Feldotto2016_Chapter_CongestionGamesWithMixedObject.pdf file_size: 235739 relation: main_file success: 1 file_date_updated: 2018-10-31T17:03:44Z has_accepted_license: '1' language: - iso: eng page: 655--669 project: - _id: '1' name: SFB 901 - _id: '7' name: SFB 901 - Subprojekt A3 - _id: '2' name: SFB 901 - Project Area A publication: Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA) series_title: LNCS status: public title: Congestion Games with Mixed Objectives type: conference user_id: '14052' year: '2016' ... --- _id: '5406' author: - first_name: Jonas full_name: Bülling, Jonas last_name: Bülling citation: ama: Bülling J. Parallelisierung von Algorithmen Zur IR-Luftbildanalyse von Laubholzmischbeständen Zur Verifizierung Der Ausbreitung von Eichenkomplexschäden.; 2016. apa: Bülling, J. (2016). Parallelisierung von Algorithmen zur IR-Luftbildanalyse von Laubholzmischbeständen zur Verifizierung der Ausbreitung von Eichenkomplexschäden. bibtex: '@book{Bülling_2016, title={Parallelisierung von Algorithmen zur IR-Luftbildanalyse von Laubholzmischbeständen zur Verifizierung der Ausbreitung von Eichenkomplexschäden}, author={Bülling, Jonas}, year={2016} }' chicago: Bülling, Jonas. Parallelisierung von Algorithmen Zur IR-Luftbildanalyse von Laubholzmischbeständen Zur Verifizierung Der Ausbreitung von Eichenkomplexschäden, 2016. ieee: J. Bülling, Parallelisierung von Algorithmen zur IR-Luftbildanalyse von Laubholzmischbeständen zur Verifizierung der Ausbreitung von Eichenkomplexschäden. 2016. mla: Bülling, Jonas. Parallelisierung von Algorithmen Zur IR-Luftbildanalyse von Laubholzmischbeständen Zur Verifizierung Der Ausbreitung von Eichenkomplexschäden. 2016. short: J. Bülling, Parallelisierung von Algorithmen Zur IR-Luftbildanalyse von Laubholzmischbeständen Zur Verifizierung Der Ausbreitung von Eichenkomplexschäden, 2016. date_created: 2018-11-07T09:26:42Z date_updated: 2022-01-06T07:01:51Z department: - _id: '63' language: - iso: eng status: public title: Parallelisierung von Algorithmen zur IR-Luftbildanalyse von Laubholzmischbeständen zur Verifizierung der Ausbreitung von Eichenkomplexschäden type: bachelorsthesis user_id: '22704' year: '2016' ... --- _id: '5407' author: - first_name: Jörn full_name: Koepe, Jörn last_name: Koepe citation: ama: Koepe J. Price-Based Allocation Games. Universität Paderborn; 2016. apa: Koepe, J. (2016). Price-Based Allocation Games. Universität Paderborn. bibtex: '@book{Koepe_2016, title={Price-Based Allocation Games}, publisher={Universität Paderborn}, author={Koepe, Jörn}, year={2016} }' chicago: Koepe, Jörn. Price-Based Allocation Games. Universität Paderborn, 2016. ieee: J. Koepe, Price-Based Allocation Games. Universität Paderborn, 2016. mla: Koepe, Jörn. Price-Based Allocation Games. Universität Paderborn, 2016. short: J. Koepe, Price-Based Allocation Games, Universität Paderborn, 2016. date_created: 2018-11-07T09:45:57Z date_updated: 2022-01-06T07:01:51Z department: - _id: '63' language: - iso: eng project: - _id: '1' name: SFB 901 - _id: '2' name: SFB 901 - Project Area A - _id: '7' name: SFB 901 - Subproject A3 publisher: Universität Paderborn status: public title: Price-Based Allocation Games type: bachelorsthesis user_id: '477' year: '2016' ... --- _id: '688' author: - first_name: Damian full_name: Kutzias, Damian last_name: Kutzias citation: ama: Kutzias D. Friendship Processes in Network Creation Games. Universität Paderborn; 2016. apa: Kutzias, D. (2016). Friendship Processes in Network Creation Games. Universität Paderborn. bibtex: '@book{Kutzias_2016, title={Friendship Processes in Network Creation Games}, publisher={Universität Paderborn}, author={Kutzias, Damian}, year={2016} }' chicago: Kutzias, Damian. Friendship Processes in Network Creation Games. Universität Paderborn, 2016. ieee: D. Kutzias, Friendship Processes in Network Creation Games. Universität Paderborn, 2016. mla: Kutzias, Damian. Friendship Processes in Network Creation Games. Universität Paderborn, 2016. short: D. Kutzias, Friendship Processes in Network Creation Games, Universität Paderborn, 2016. date_created: 2017-11-14T06:50:35Z date_updated: 2022-01-06T07:03:23Z department: - _id: '63' language: - iso: eng project: - _id: '1' name: SFB 901 - _id: '5' name: SFB 901 - Subprojekt A1 - _id: '2' name: SFB 901 - Project Area A publisher: Universität Paderborn status: public supervisor: - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide title: Friendship Processes in Network Creation Games type: mastersthesis user_id: '477' year: '2016' ... --- _id: '689' author: - first_name: Johannes Sebastian full_name: Schaefer, Johannes Sebastian id: '30291' last_name: Schaefer citation: ama: Schaefer JS. Routing Algorithms on Delayed Networks for Disaster Management Support. Universität Paderborn; 2016. apa: Schaefer, J. S. (2016). Routing Algorithms on Delayed Networks for Disaster Management Support. Universität Paderborn. bibtex: '@book{Schaefer_2016, title={Routing Algorithms on Delayed Networks for Disaster Management Support}, publisher={Universität Paderborn}, author={Schaefer, Johannes Sebastian}, year={2016} }' chicago: Schaefer, Johannes Sebastian. Routing Algorithms on Delayed Networks for Disaster Management Support. Universität Paderborn, 2016. ieee: J. S. Schaefer, Routing Algorithms on Delayed Networks for Disaster Management Support. Universität Paderborn, 2016. mla: Schaefer, Johannes Sebastian. Routing Algorithms on Delayed Networks for Disaster Management Support. Universität Paderborn, 2016. short: J.S. Schaefer, Routing Algorithms on Delayed Networks for Disaster Management Support, Universität Paderborn, 2016. date_created: 2017-11-14T06:51:37Z date_updated: 2022-01-06T07:03:23Z department: - _id: '63' language: - iso: eng project: - _id: '1' name: SFB 901 - _id: '5' name: SFB 901 - Subprojekt A1 - _id: '2' name: SFB 901 - Project Area A publisher: Universität Paderborn status: public supervisor: - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide title: Routing Algorithms on Delayed Networks for Disaster Management Support type: mastersthesis user_id: '477' year: '2016' ... --- _id: '16450' abstract: - lang: eng text: "In this paper, we solve the local gathering problem of a swarm of $n$\r\nindistinguishable, point-shaped robots on a two dimensional grid in\r\nasymptotically optimal time $\\mathcal{O}(n)$ in the fully synchronous\r\n$\\mathcal{FSYNC}$ time model. Given an arbitrarily distributed (yet connected)\r\nswarm of robots, the gathering problem on the grid is to locate all robots\r\nwithin a $2\\times 2$-sized area that is not known beforehand. Two robots are\r\nconnected if they are vertical or horizontal neighbors on the grid. The\r\nlocality constraint means that no global control, no compass, no global\r\ncommunication and only local vision is available; hence, a robot can only see\r\nits grid neighbors up to a constant $L_1$-distance, which also limits its\r\nmovements. A robot can move to one of its eight neighboring grid cells and if\r\ntwo or more robots move to the same location they are \\emph{merged} to be only\r\none robot. The locality constraint is the significant challenging issue here,\r\nsince robot movements must not harm the (only globally checkable) swarm\r\nconnectivity. For solving the gathering problem, we provide a synchronous\r\nalgorithm -- executed by every robot -- which ensures that robots merge without\r\nbreaking the swarm connectivity. In our model, robots can obtain a special\r\nstate, which marks such a robot to be performing specific connectivity\r\npreserving movements in order to allow later merge operations of the swarm.\r\nCompared to the grid, for gathering in the Euclidean plane for the same robot\r\nand time model the best known upper bound is $\\mathcal{O}(n^2)$." author: - first_name: 'Andreas ' full_name: 'Cord-Landwehr, Andreas ' last_name: Cord-Landwehr - first_name: Matthias full_name: Fischer, Matthias id: '146' last_name: Fischer - first_name: Daniel full_name: Jung, Daniel id: '37827' last_name: Jung - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide citation: ama: Cord-Landwehr A, Fischer M, Jung D, Meyer auf der Heide F. Asymptotically Optimal Gathering on a Grid. arXiv:160203303. 2016. apa: Cord-Landwehr, A., Fischer, M., Jung, D., & Meyer auf der Heide, F. (2016). Asymptotically Optimal Gathering on a Grid. ArXiv:1602.03303. bibtex: '@article{Cord-Landwehr_Fischer_Jung_Meyer auf der Heide_2016, title={Asymptotically Optimal Gathering on a Grid}, journal={arXiv:1602.03303}, author={Cord-Landwehr, Andreas and Fischer, Matthias and Jung, Daniel and Meyer auf der Heide, Friedhelm}, year={2016} }' chicago: Cord-Landwehr, Andreas , Matthias Fischer, Daniel Jung, and Friedhelm Meyer auf der Heide. “Asymptotically Optimal Gathering on a Grid.” ArXiv:1602.03303, 2016. ieee: A. Cord-Landwehr, M. Fischer, D. Jung, and F. Meyer auf der Heide, “Asymptotically Optimal Gathering on a Grid,” arXiv:1602.03303. 2016. mla: Cord-Landwehr, Andreas, et al. “Asymptotically Optimal Gathering on a Grid.” ArXiv:1602.03303, 2016. short: A. Cord-Landwehr, M. Fischer, D. Jung, F. Meyer auf der Heide, ArXiv:1602.03303 (2016). date_created: 2020-04-07T07:20:47Z date_updated: 2022-01-06T06:52:50Z department: - _id: '63' external_id: arxiv: - '1602.03303' language: - iso: eng publication: arXiv:1602.03303 status: public title: Asymptotically Optimal Gathering on a Grid type: preprint user_id: '15415' year: '2016' ... --- _id: '169' abstract: - lang: eng text: We apply methods of genetic programming to a general problem from software engineering, namely example-based generation of specifications. In particular, we focus on model transformation by example. The definition and implementation of model transformations is a task frequently carried out by domain experts, hence, a (semi-)automatic approach is desirable. This application is challenging because the underlying search space has rich semantics, is high-dimensional, and unstructured. Hence, a computationally brute-force approach would be unscalable and potentially infeasible. To address that problem, we develop a sophisticated approach of designing complex mutation operators. We define ‘patterns’ for constructing mutation operators and report a successful case study. Furthermore, the code of the evolved model transformation is required to have high maintainability and extensibility, that is, the code should be easily readable by domain experts. We report an evaluation of this approach in a software engineering case study. author: - first_name: Thomas full_name: Kühne, Thomas id: '49079' last_name: Kühne - first_name: Heiko full_name: Hamann, Heiko last_name: Hamann - first_name: Svetlana full_name: Arifulina, Svetlana last_name: Arifulina - first_name: Gregor full_name: Engels, Gregor id: '107' last_name: Engels citation: ama: 'Kühne T, Hamann H, Arifulina S, Engels G. Patterns for Constructing Mutation Operators: Limiting the Search Space in a Software Engineering Application. In: Proceedings of the 19th European Conference on Genetic Programming (EuroGP 2016). LNCS 9594. ; 2016:278--293. doi:10.1007/978-3-319-30668-1_18' apa: 'Kühne, T., Hamann, H., Arifulina, S., & Engels, G. (2016). Patterns for Constructing Mutation Operators: Limiting the Search Space in a Software Engineering Application. In Proceedings of the 19th European Conference on Genetic Programming (EuroGP 2016) (pp. 278--293). https://doi.org/10.1007/978-3-319-30668-1_18' bibtex: '@inproceedings{Kühne_Hamann_Arifulina_Engels_2016, series={LNCS 9594}, title={Patterns for Constructing Mutation Operators: Limiting the Search Space in a Software Engineering Application}, DOI={10.1007/978-3-319-30668-1_18}, booktitle={Proceedings of the 19th European Conference on Genetic Programming (EuroGP 2016)}, author={Kühne, Thomas and Hamann, Heiko and Arifulina, Svetlana and Engels, Gregor}, year={2016}, pages={278--293}, collection={LNCS 9594} }' chicago: 'Kühne, Thomas, Heiko Hamann, Svetlana Arifulina, and Gregor Engels. “Patterns for Constructing Mutation Operators: Limiting the Search Space in a Software Engineering Application.” In Proceedings of the 19th European Conference on Genetic Programming (EuroGP 2016), 278--293. LNCS 9594, 2016. https://doi.org/10.1007/978-3-319-30668-1_18.' ieee: 'T. Kühne, H. Hamann, S. Arifulina, and G. Engels, “Patterns for Constructing Mutation Operators: Limiting the Search Space in a Software Engineering Application,” in Proceedings of the 19th European Conference on Genetic Programming (EuroGP 2016), 2016, pp. 278--293.' mla: 'Kühne, Thomas, et al. “Patterns for Constructing Mutation Operators: Limiting the Search Space in a Software Engineering Application.” Proceedings of the 19th European Conference on Genetic Programming (EuroGP 2016), 2016, pp. 278--293, doi:10.1007/978-3-319-30668-1_18.' short: 'T. Kühne, H. Hamann, S. Arifulina, G. Engels, in: Proceedings of the 19th European Conference on Genetic Programming (EuroGP 2016), 2016, pp. 278--293.' date_created: 2017-10-17T12:41:25Z date_updated: 2022-01-06T06:52:58Z ddc: - '040' department: - _id: '66' - _id: '238' - _id: '63' doi: 10.1007/978-3-319-30668-1_18 file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-21T12:41:08Z date_updated: 2018-03-21T12:41:08Z file_id: '1540' file_name: 169-kuehne.pdf file_size: 2069427 relation: main_file success: 1 file_date_updated: 2018-03-21T12:41:08Z has_accepted_license: '1' language: - iso: eng page: 278--293 project: - _id: '1' name: SFB 901 - _id: '9' name: SFB 901 - Subprojekt B1 - _id: '3' name: SFB 901 - Project Area B publication: Proceedings of the 19th European Conference on Genetic Programming (EuroGP 2016) series_title: LNCS 9594 status: public title: 'Patterns for Constructing Mutation Operators: Limiting the Search Space in a Software Engineering Application' type: conference user_id: '57458' year: '2016' ... --- _id: '1082' author: - first_name: Tobias full_name: Handirk, Tobias last_name: Handirk citation: ama: Handirk T. Über die Rolle von Informationen in Verkehrsnetzwerken. Universität Paderborn; 2016. apa: Handirk, T. (2016). Über die Rolle von Informationen in Verkehrsnetzwerken. Universität Paderborn. bibtex: '@book{Handirk_2016, title={Über die Rolle von Informationen in Verkehrsnetzwerken}, publisher={Universität Paderborn}, author={Handirk, Tobias}, year={2016} }' chicago: Handirk, Tobias. Über die Rolle von Informationen in Verkehrsnetzwerken. Universität Paderborn, 2016. ieee: T. Handirk, Über die Rolle von Informationen in Verkehrsnetzwerken. Universität Paderborn, 2016. mla: Handirk, Tobias. Über die Rolle von Informationen in Verkehrsnetzwerken. Universität Paderborn, 2016. short: T. Handirk, Über die Rolle von Informationen in Verkehrsnetzwerken, Universität Paderborn, 2016. date_created: 2017-12-19T10:10:17Z date_updated: 2022-01-06T06:50:51Z department: - _id: '63' - _id: '541' language: - iso: ger project: - _id: '1' name: SFB 901 - _id: '7' name: SFB 901 - Subproject A3 - _id: '2' name: SFB 901 - Project Area A publisher: Universität Paderborn status: public supervisor: - first_name: Alexander full_name: Skopalik, Alexander id: '40384' last_name: Skopalik title: Über die Rolle von Informationen in Verkehrsnetzwerken type: bachelorsthesis user_id: '14052' year: '2016' ... --- _id: '154' author: - first_name: Andreas full_name: Cord-Landwehr, Andreas last_name: Cord-Landwehr citation: ama: Cord-Landwehr A. Selfish Network Creation - On Variants of Network Creation Games. Vol 353. Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn; 2016. apa: Cord-Landwehr, A. (2016). Selfish Network Creation - On Variants of Network Creation Games (Vol. 353). Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn. bibtex: '@book{Cord-Landwehr_2016, series={Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn}, title={Selfish Network Creation - On Variants of Network Creation Games}, volume={353}, publisher={Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn}, author={Cord-Landwehr, Andreas}, year={2016}, collection={Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn} }' chicago: Cord-Landwehr, Andreas. Selfish Network Creation - On Variants of Network Creation Games. Vol. 353. Verlagsschriftenreihe Des Heinz Nixdorf Instituts, Paderborn. Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn, 2016. ieee: A. Cord-Landwehr, Selfish Network Creation - On Variants of Network Creation Games, vol. 353. Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn, 2016. mla: Cord-Landwehr, Andreas. Selfish Network Creation - On Variants of Network Creation Games. Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn, 2016. short: A. Cord-Landwehr, Selfish Network Creation - On Variants of Network Creation Games, Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn, 2016. date_created: 2017-10-17T12:41:22Z date_updated: 2022-01-06T06:52:23Z ddc: - '040' department: - _id: '63' - _id: '26' file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-21T12:52:03Z date_updated: 2018-03-21T12:52:03Z file_id: '1551' file_name: 154-dissertation.pdf file_size: 800101 relation: main_file success: 1 file_date_updated: 2018-03-21T12:52:03Z has_accepted_license: '1' intvolume: ' 353' language: - iso: eng project: - _id: '1' name: SFB 901 - _id: '5' name: SFB 901 - Subprojekt A1 - _id: '2' name: SFB 901 - Project Area A publication_identifier: isbn: - 978-3-942647-72-4 publisher: Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn related_material: link: - relation: confirmation url: http://nbn-resolving.de/urn:nbn:de:hbz:466:2-24089 series_title: Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn status: public supervisor: - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide title: Selfish Network Creation - On Variants of Network Creation Games type: dissertation user_id: '5786' volume: 353 year: '2016' ... --- _id: '157' abstract: - lang: eng text: Consider a scheduling problem in which a set of jobs with interjob communication, canonically represented by a weighted tree, needs to be scheduled on m parallel processors interconnected by a shared communication channel. In each time step, we may allow any processed job to use a certain capacity of the channel in order to satisfy (parts of) its communication demands to adjacent jobs processed in parallel. The goal is to find a schedule that minimizes the makespan and in which communication demands of all jobs are satisfied.We show that this problem is NP-hard in the strong sense even if the number of processors and the maximum degree of the underlying tree is constant.Consequently, we design and analyze simple approximation algorithms with asymptotic approximation ratio 2-2/m in case of paths and a ratio of 5/2 in case of arbitrary trees. author: - first_name: Jürgen full_name: König, Jürgen last_name: König - first_name: Alexander full_name: Mäcker, Alexander id: '13536' last_name: Mäcker - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide - first_name: Sören full_name: Riechers, Sören last_name: Riechers citation: ama: 'König J, Mäcker A, Meyer auf der Heide F, Riechers S. Scheduling with Interjob Communication on Parallel Processors. In: Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA). LNCS. ; 2016:563--577. doi:10.1007/978-3-319-48749-6_41' apa: König, J., Mäcker, A., Meyer auf der Heide, F., & Riechers, S. (2016). Scheduling with Interjob Communication on Parallel Processors. In Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA) (pp. 563--577). https://doi.org/10.1007/978-3-319-48749-6_41 bibtex: '@inproceedings{König_Mäcker_Meyer auf der Heide_Riechers_2016, series={LNCS}, title={Scheduling with Interjob Communication on Parallel Processors}, DOI={10.1007/978-3-319-48749-6_41}, booktitle={Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA)}, author={König, Jürgen and Mäcker, Alexander and Meyer auf der Heide, Friedhelm and Riechers, Sören}, year={2016}, pages={563--577}, collection={LNCS} }' chicago: König, Jürgen, Alexander Mäcker, Friedhelm Meyer auf der Heide, and Sören Riechers. “Scheduling with Interjob Communication on Parallel Processors.” In Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA), 563--577. LNCS, 2016. https://doi.org/10.1007/978-3-319-48749-6_41. ieee: J. König, A. Mäcker, F. Meyer auf der Heide, and S. Riechers, “Scheduling with Interjob Communication on Parallel Processors,” in Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA), 2016, pp. 563--577. mla: König, Jürgen, et al. “Scheduling with Interjob Communication on Parallel Processors.” Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA), 2016, pp. 563--577, doi:10.1007/978-3-319-48749-6_41. short: 'J. König, A. Mäcker, F. Meyer auf der Heide, S. Riechers, in: Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA), 2016, pp. 563--577.' date_created: 2017-10-17T12:41:22Z date_updated: 2022-01-06T06:52:32Z ddc: - '040' department: - _id: '63' doi: 10.1007/978-3-319-48749-6_41 file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-21T12:50:29Z date_updated: 2018-03-21T12:50:29Z file_id: '1549' file_name: 157-chp_3A10.1007_2F978-3-319-48749-6_41.pdf file_size: 753147 relation: main_file success: 1 file_date_updated: 2018-03-21T12:50:29Z has_accepted_license: '1' page: 563--577 project: - _id: '1' name: SFB 901 - _id: '16' name: SFB 901 - Subprojekt C4 - _id: '4' name: SFB 901 - Project Area C publication: Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA) series_title: LNCS status: public title: Scheduling with Interjob Communication on Parallel Processors type: conference user_id: '15504' year: '2016' ... --- _id: '159' abstract: - lang: eng text: Abstract—Max-min fairness (MMF) is a widely known approachto a fair allocation of bandwidth to each of the usersin a network. This allocation can be computed by uniformlyraising the bandwidths of all users without violating capacityconstraints. We consider an extension of these allocations byraising the bandwidth with arbitrary and not necessarily uniformtime-depending velocities (allocation rates). These allocationsare used in a game-theoretic context for routing choices, whichwe formalize in progressive filling games (PFGs). We present avariety of results for equilibria in PFGs. We show that these gamespossess pure Nash and strong equilibria. While computation ingeneral is NP-hard, there are polynomial-time algorithms forprominent classes of Max-Min-Fair Games (MMFG), includingthe case when all users have the same source-destination pair.We characterize prices of anarchy and stability for pure Nashand strong equilibria in PFGs and MMFGs when players havedifferent or the same source-destination pairs. In addition, weshow that when a designer can adjust allocation rates, it is possibleto design games with optimal strong equilibria. Some initial resultson polynomial-time algorithms in this direction are also derived. author: - first_name: Tobias full_name: Harks, Tobias last_name: Harks - first_name: Martin full_name: Höfer, Martin last_name: Höfer - first_name: Kevin full_name: Schewior, Kevin last_name: Schewior - first_name: Alexander full_name: Skopalik, Alexander id: '40384' last_name: Skopalik citation: ama: Harks T, Höfer M, Schewior K, Skopalik A. Routing Games With Progressive Filling. IEEE/ACM Transactions on Networking. 2016;(4):2553-2562. doi:10.1109/TNET.2015.2468571 apa: Harks, T., Höfer, M., Schewior, K., & Skopalik, A. (2016). Routing Games With Progressive Filling. IEEE/ACM Transactions on Networking, (4), 2553–2562. https://doi.org/10.1109/TNET.2015.2468571 bibtex: '@article{Harks_Höfer_Schewior_Skopalik_2016, title={Routing Games With Progressive Filling}, DOI={10.1109/TNET.2015.2468571}, number={4}, journal={IEEE/ACM Transactions on Networking}, publisher={IEEE}, author={Harks, Tobias and Höfer, Martin and Schewior, Kevin and Skopalik, Alexander}, year={2016}, pages={2553–2562} }' chicago: 'Harks, Tobias, Martin Höfer, Kevin Schewior, and Alexander Skopalik. “Routing Games With Progressive Filling.” IEEE/ACM Transactions on Networking, no. 4 (2016): 2553–62. https://doi.org/10.1109/TNET.2015.2468571.' ieee: T. Harks, M. Höfer, K. Schewior, and A. Skopalik, “Routing Games With Progressive Filling,” IEEE/ACM Transactions on Networking, no. 4, pp. 2553–2562, 2016. mla: Harks, Tobias, et al. “Routing Games With Progressive Filling.” IEEE/ACM Transactions on Networking, no. 4, IEEE, 2016, pp. 2553–62, doi:10.1109/TNET.2015.2468571. short: T. Harks, M. Höfer, K. Schewior, A. Skopalik, IEEE/ACM Transactions on Networking (2016) 2553–2562. date_created: 2017-10-17T12:41:23Z date_updated: 2022-01-06T06:52:40Z ddc: - '040' department: - _id: '63' - _id: '541' doi: 10.1109/TNET.2015.2468571 file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-21T12:48:02Z date_updated: 2018-03-21T12:48:02Z file_id: '1547' file_name: 159-Harks-Hoefer-Schewior-Skopalik2016.pdf file_size: 1655309 relation: main_file success: 1 file_date_updated: 2018-03-21T12:48:02Z has_accepted_license: '1' issue: '4' language: - iso: eng page: 2553 - 2562 project: - _id: '1' name: SFB 901 - _id: '7' name: SFB 901 - Subprojekt A3 - _id: '2' name: SFB 901 - Project Area A publication: IEEE/ACM Transactions on Networking publisher: IEEE status: public title: Routing Games With Progressive Filling type: journal_article user_id: '477' year: '2016' ... --- _id: '149' abstract: - lang: eng text: 'In this paper we consider a strategic variant of the online facility location problem. Given is a graph in which each node serves two roles: it is a strategic client stating requests as well as a potential location for a facility. In each time step one client states a request which induces private costs equal to the distance to the closest facility. Before serving, the clients may collectively decide to open new facilities, sharing the corresponding price. Instead of optimizing the global costs, each client acts selfishly. The prices of new facilities vary between nodes and also change over time, but are always bounded by some fixed value α. Both the requests as well as the facility prices are given by an online sequence and are not known in advance.We characterize the optimal strategies of the clients and analyze their overall performance in comparison to a centralized offline solution. If all players optimize their own competitiveness, the global performance of the system is O(√α⋅α) times worse than the offline optimum. A restriction to a natural subclass of strategies improves this result to O(α). We also show that for fixed facility costs, we can find strategies such that this bound further improves to O(√α).' author: - first_name: Maximilian full_name: Drees, Maximilian last_name: Drees - first_name: Björn full_name: Feldkord, Björn id: '22704' last_name: Feldkord - first_name: Alexander full_name: Skopalik, Alexander id: '40384' last_name: Skopalik citation: ama: 'Drees M, Feldkord B, Skopalik A. Strategic Online Facility Location. In: Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA). LNCS. ; 2016:593--607. doi:10.1007/978-3-319-48749-6_43' apa: Drees, M., Feldkord, B., & Skopalik, A. (2016). Strategic Online Facility Location. In Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA) (pp. 593--607). https://doi.org/10.1007/978-3-319-48749-6_43 bibtex: '@inproceedings{Drees_Feldkord_Skopalik_2016, series={LNCS}, title={Strategic Online Facility Location}, DOI={10.1007/978-3-319-48749-6_43}, booktitle={Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA)}, author={Drees, Maximilian and Feldkord, Björn and Skopalik, Alexander}, year={2016}, pages={593--607}, collection={LNCS} }' chicago: Drees, Maximilian, Björn Feldkord, and Alexander Skopalik. “Strategic Online Facility Location.” In Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA), 593--607. LNCS, 2016. https://doi.org/10.1007/978-3-319-48749-6_43. ieee: M. Drees, B. Feldkord, and A. Skopalik, “Strategic Online Facility Location,” in Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA), 2016, pp. 593--607. mla: Drees, Maximilian, et al. “Strategic Online Facility Location.” Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA), 2016, pp. 593--607, doi:10.1007/978-3-319-48749-6_43. short: 'M. Drees, B. Feldkord, A. Skopalik, in: Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA), 2016, pp. 593--607.' date_created: 2017-10-17T12:41:21Z date_updated: 2022-01-06T06:52:10Z ddc: - '040' department: - _id: '63' - _id: '541' doi: 10.1007/978-3-319-48749-6_43 file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-21T12:55:43Z date_updated: 2018-03-21T12:55:43Z file_id: '1553' file_name: 149-chp_3A10.1007_2F978-3-319-48749-6_43.pdf file_size: 236253 relation: main_file success: 1 file_date_updated: 2018-03-21T12:55:43Z has_accepted_license: '1' language: - iso: eng page: 593--607 project: - _id: '1' name: SFB 901 - _id: '5' name: SFB 901 - Subprojekt A1 - _id: '7' name: SFB 901 - Subproject A3 - _id: '2' name: SFB 901 - Project Area A publication: Proceedings of the 10th Annual International Conference on Combinatorial Optimization and Applications (COCOA) series_title: LNCS status: public title: Strategic Online Facility Location type: conference user_id: '477' year: '2016' ... --- _id: '163' citation: ama: Dressler F, Meyer auf der Heide F, eds. Proceedings of the 17th ACM International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc). ACM; 2016. doi:10.1145/2942358 apa: 'Dressler, F., & Meyer auf der Heide, F. (Eds.). (2016). Proceedings of the 17th ACM International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc). Presented at the MobiHoc, Paderborn, Germany: ACM. https://doi.org/10.1145/2942358' bibtex: '@book{Dressler_Meyer auf der Heide_2016, title={Proceedings of the 17th ACM International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc)}, DOI={10.1145/2942358}, publisher={ACM}, year={2016} }' chicago: Dressler, Falko, and Friedhelm Meyer auf der Heide, eds. Proceedings of the 17th ACM International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc). ACM, 2016. https://doi.org/10.1145/2942358. ieee: F. Dressler and F. Meyer auf der Heide, Eds., Proceedings of the 17th ACM International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc). ACM, 2016. mla: Dressler, Falko, and Friedhelm Meyer auf der Heide, editors. Proceedings of the 17th ACM International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc). ACM, 2016, doi:10.1145/2942358. short: F. Dressler, F. Meyer auf der Heide, eds., Proceedings of the 17th ACM International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc), ACM, 2016. conference: end_date: 2016-07-08 location: Paderborn, Germany name: MobiHoc start_date: 2016-07-04 date_created: 2017-10-17T12:41:23Z date_updated: 2022-01-06T06:52:48Z department: - _id: '63' doi: 10.1145/2942358 editor: - first_name: Falko full_name: Dressler, Falko last_name: Dressler - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide project: - _id: '1' name: SFB 901 - _id: '16' name: SFB 901 - Subprojekt C4 - _id: '4' name: SFB 901 - Project Area C publisher: ACM status: public title: Proceedings of the 17th ACM International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc) type: conference_editor user_id: '15504' year: '2016' ... --- _id: '16351' abstract: - lang: eng text: "Defining, measuring, and comparing the quality and efficiency of rendering algorithms in computer graphics is a demanding challenge: quality measures are often application specific and efficiency is strongly influenced by properties of the rendered scene and the used hardware. We survey the currently employed evaluation methods for AQ1 the development process of rendering algorithms. Then, we present our PADrend framework, which supports systematic and flexible development, evaluation, adaptation, and comparison of rendering algorithms, and provides a comfortable and easy-to-use platform for developers of rendering algorithms. The system includes a new evaluation method to improve the objectivity of experimental evaluations of rendering algorithms.\r\n" author: - first_name: Matthias full_name: Fischer, Matthias id: '146' last_name: Fischer - first_name: Claudius full_name: Jähn, Claudius last_name: Jähn - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide - first_name: Ralf full_name: Petring, Ralf last_name: Petring citation: ama: 'Fischer M, Jähn C, Meyer auf der Heide F, Petring R. Algorithm Engineering Aspects of Real-Time Rendering Algorithms. In: Kliemann L, Sanders P, eds. Algorithm Engineering. Vol 9220. LNCS. Springer; 2016:226-244. doi:10.1007/978-3-319-49487-6_7 ' apa: Fischer, M., Jähn, C., Meyer auf der Heide, F., & Petring, R. (2016). Algorithm Engineering Aspects of Real-Time Rendering Algorithms. In L. Kliemann & P. Sanders (Eds.), Algorithm Engineering (Vol. 9220, pp. 226–244). Springer. https://doi.org/10.1007/978-3-319-49487-6_7 bibtex: '@inproceedings{Fischer_Jähn_Meyer auf der Heide_Petring_2016, series={LNCS}, title={Algorithm Engineering Aspects of Real-Time Rendering Algorithms}, volume={9220}, DOI={10.1007/978-3-319-49487-6_7 }, booktitle={Algorithm Engineering}, publisher={Springer}, author={Fischer, Matthias and Jähn, Claudius and Meyer auf der Heide, Friedhelm and Petring, Ralf}, editor={Kliemann, Lasse and Sanders, PeterEditors}, year={2016}, pages={226–244}, collection={LNCS} }' chicago: Fischer, Matthias, Claudius Jähn, Friedhelm Meyer auf der Heide, and Ralf Petring. “Algorithm Engineering Aspects of Real-Time Rendering Algorithms.” In Algorithm Engineering, edited by Lasse Kliemann and Peter Sanders, 9220:226–44. LNCS. Springer, 2016. https://doi.org/10.1007/978-3-319-49487-6_7 . ieee: M. Fischer, C. Jähn, F. Meyer auf der Heide, and R. Petring, “Algorithm Engineering Aspects of Real-Time Rendering Algorithms,” in Algorithm Engineering, 2016, vol. 9220, pp. 226–244. mla: Fischer, Matthias, et al. “Algorithm Engineering Aspects of Real-Time Rendering Algorithms.” Algorithm Engineering, edited by Lasse Kliemann and Peter Sanders, vol. 9220, Springer, 2016, pp. 226–44, doi:10.1007/978-3-319-49487-6_7 . short: 'M. Fischer, C. Jähn, F. Meyer auf der Heide, R. Petring, in: L. Kliemann, P. Sanders (Eds.), Algorithm Engineering, Springer, 2016, pp. 226–244.' date_created: 2020-03-30T10:21:53Z date_updated: 2022-01-06T06:52:49Z department: - _id: '63' doi: '10.1007/978-3-319-49487-6_7 ' editor: - first_name: Lasse full_name: Kliemann, Lasse last_name: Kliemann - first_name: Peter full_name: Sanders, Peter last_name: Sanders intvolume: ' 9220' language: - iso: eng page: 226-244 publication: Algorithm Engineering publisher: Springer series_title: LNCS status: public title: Algorithm Engineering Aspects of Real-Time Rendering Algorithms type: conference user_id: '15415' volume: 9220 year: '2016' ... --- _id: '16358' author: - first_name: Shouwei full_name: Li, Shouwei last_name: Li - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide - first_name: Pavel full_name: Podlipyan, Pavel last_name: Podlipyan citation: ama: 'Li S, Meyer auf der Heide F, Podlipyan P. The impact of the Gabriel subgraph of the visibility graph on the gathering of mobile autonomous robots. In: Algorithms for Sensor Systems, Proceedings of the 12th International Symposium on Algorithms and Experiments for Wireless Sensor Networks (ALGOSENSORS). Springer; 2016. doi:10.1007/978-3-319-53058-1_5 ' apa: Li, S., Meyer auf der Heide, F., & Podlipyan, P. (2016). The impact of the Gabriel subgraph of the visibility graph on the gathering of mobile autonomous robots. In Algorithms for Sensor Systems, Proceedings of the 12th International Symposium on Algorithms and Experiments for Wireless Sensor Networks (ALGOSENSORS). Springer. https://doi.org/10.1007/978-3-319-53058-1_5 bibtex: '@inproceedings{Li_Meyer auf der Heide_Podlipyan_2016, title={The impact of the Gabriel subgraph of the visibility graph on the gathering of mobile autonomous robots}, DOI={10.1007/978-3-319-53058-1_5 }, booktitle={Algorithms for Sensor Systems, Proceedings of the 12th International Symposium on Algorithms and Experiments for Wireless Sensor Networks (ALGOSENSORS)}, publisher={Springer}, author={Li, Shouwei and Meyer auf der Heide, Friedhelm and Podlipyan, Pavel}, year={2016} }' chicago: Li, Shouwei, Friedhelm Meyer auf der Heide, and Pavel Podlipyan. “The Impact of the Gabriel Subgraph of the Visibility Graph on the Gathering of Mobile Autonomous Robots.” In Algorithms for Sensor Systems, Proceedings of the 12th International Symposium on Algorithms and Experiments for Wireless Sensor Networks (ALGOSENSORS). Springer, 2016. https://doi.org/10.1007/978-3-319-53058-1_5 . ieee: S. Li, F. Meyer auf der Heide, and P. Podlipyan, “The impact of the Gabriel subgraph of the visibility graph on the gathering of mobile autonomous robots,” in Algorithms for Sensor Systems, Proceedings of the 12th International Symposium on Algorithms and Experiments for Wireless Sensor Networks (ALGOSENSORS), 2016. mla: Li, Shouwei, et al. “The Impact of the Gabriel Subgraph of the Visibility Graph on the Gathering of Mobile Autonomous Robots.” Algorithms for Sensor Systems, Proceedings of the 12th International Symposium on Algorithms and Experiments for Wireless Sensor Networks (ALGOSENSORS), Springer, 2016, doi:10.1007/978-3-319-53058-1_5 . short: 'S. Li, F. Meyer auf der Heide, P. Podlipyan, in: Algorithms for Sensor Systems, Proceedings of the 12th International Symposium on Algorithms and Experiments for Wireless Sensor Networks (ALGOSENSORS), Springer, 2016.' date_created: 2020-04-01T12:28:09Z date_updated: 2022-01-06T06:52:49Z department: - _id: '63' doi: '10.1007/978-3-319-53058-1_5 ' language: - iso: eng publication: Algorithms for Sensor Systems, Proceedings of the 12th International Symposium on Algorithms and Experiments for Wireless Sensor Networks (ALGOSENSORS) publisher: Springer status: public title: The impact of the Gabriel subgraph of the visibility graph on the gathering of mobile autonomous robots type: conference user_id: '15415' year: '2016' ... --- _id: '16359' abstract: - lang: eng text: In this paper, we solve the local gathering problem of a swarm of n indistinguishable, point-shaped robots on a two dimensional grid in asymptotically optimal time O(n) in the fully synchronous FSYNC time model. Given an arbitrarily distributed (yet connected) swarm of robots, the gathering problem on the grid is to locate all robots within a 2x2- sized area that is not known beforehand. Two robots are connected if they are vertical or horizontal neighbors on the grid. The locality constraint means that no global control, no compass, no global communication and only local vision is available; hence, a robot can only see its grid neighbors up to a constant L1-distance, which also limits its movements. A robot can move to one of its eight neighboring grid cells and if two or more robots move to the same location they are merged to be only one robot. The locality constraint is the significant challenging issue here, since robot move- ments must not harm the (only globally checkable) swarm connectivity. For solving the gathering problem, we provide a synchronous algorithm { executed by every robot { which ensures that robots merge without breaking the swarm con- nectivity. In our model, robots can obtain a special state, which marks such a robot to be performing specific connec- tivity preserving movements in order to allow later merge operations of the swarm. Compared to the grid, for gath- ering in the Euclidean plane for the same robot and time model the best known upper bound is O(n^2). author: - first_name: Andreas full_name: Cord-Landwehr, Andreas last_name: Cord-Landwehr - first_name: Matthias full_name: Fischer, Matthias id: '146' last_name: Fischer - first_name: Daniel full_name: Jung, Daniel id: '37827' last_name: Jung - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide citation: ama: 'Cord-Landwehr A, Fischer M, Jung D, Meyer auf der Heide F. Asymptotically Optimal Gathering on a Grid. In: Proceedings of the 28th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA). ACM; 2016:301-312. doi:10.1145/2935764.2935789' apa: Cord-Landwehr, A., Fischer, M., Jung, D., & Meyer auf der Heide, F. (2016). Asymptotically Optimal Gathering on a Grid. In Proceedings of the 28th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA) (pp. 301–312). ACM. https://doi.org/10.1145/2935764.2935789 bibtex: '@inproceedings{Cord-Landwehr_Fischer_Jung_Meyer auf der Heide_2016, title={Asymptotically Optimal Gathering on a Grid}, DOI={10.1145/2935764.2935789}, booktitle={Proceedings of the 28th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA)}, publisher={ACM}, author={Cord-Landwehr, Andreas and Fischer, Matthias and Jung, Daniel and Meyer auf der Heide, Friedhelm}, year={2016}, pages={301–312} }' chicago: Cord-Landwehr, Andreas, Matthias Fischer, Daniel Jung, and Friedhelm Meyer auf der Heide. “Asymptotically Optimal Gathering on a Grid.” In Proceedings of the 28th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA), 301–12. ACM, 2016. https://doi.org/10.1145/2935764.2935789. ieee: A. Cord-Landwehr, M. Fischer, D. Jung, and F. Meyer auf der Heide, “Asymptotically Optimal Gathering on a Grid,” in Proceedings of the 28th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA), 2016, pp. 301–312. mla: Cord-Landwehr, Andreas, et al. “Asymptotically Optimal Gathering on a Grid.” Proceedings of the 28th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA), ACM, 2016, pp. 301–12, doi:10.1145/2935764.2935789. short: 'A. Cord-Landwehr, M. Fischer, D. Jung, F. Meyer auf der Heide, in: Proceedings of the 28th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA), ACM, 2016, pp. 301–312.' date_created: 2020-04-01T12:46:35Z date_updated: 2022-01-06T06:52:49Z department: - _id: '63' doi: 10.1145/2935764.2935789 language: - iso: eng page: 301-312 publication: Proceedings of the 28th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA) publisher: ACM status: public title: Asymptotically Optimal Gathering on a Grid type: conference user_id: '15415' year: '2016' ... --- _id: '16360' abstract: - lang: eng text: 'We consider the following variant of the two dimensional gathering problem for swarms of robots: Given a swarm of n indistinguishable, point shaped robots on a two dimensional grid. Initially, the robots form a closed chain on the grid and must keep this connectivity during the whole process of their gathering. Connectivity means, that neighboring robots of the chain need to be positioned at the same or neighboring points of the grid. In our model, gathering means to keep shortening the chain until the robots are located inside a 2*2 subgrid. Our model is completely local (no global control, no global coordinates, no compass, no global communication or vision, ...). Each robot can only see its next constant number of left and right neighbors on the chain. This fixed constant is called the viewing path length. All its operations and detections are restricted to this constant number of robots. Other robots, even if located at neighboring or the same grid point cannot be detected. Only based on the relative positions of its detectable chain neighbors, a robot can decide to obtain a certain state. Based on this state and their local knowledge, the robots do local modifications to the chain by moving to neighboring grid points without breaking the chain. These modifications are performed without the knowledge whether they lead to a global progress or not. We assume the fully synchronous FSYNC model. For this problem, we present a gathering algorithm which needs linear time. This result generalizes a result, where an open chain with specified distinguishable (and fixed) endpoints is considered. ' author: - first_name: Sebastian full_name: Abshoff, Sebastian last_name: Abshoff - first_name: Andreas full_name: Cord-Landwehr, Andreas last_name: Cord-Landwehr - first_name: Matthias full_name: Fischer, Matthias id: '146' last_name: Fischer - first_name: Daniel full_name: Jung, Daniel id: '37827' last_name: Jung - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide citation: ama: 'Abshoff S, Cord-Landwehr A, Fischer M, Jung D, Meyer auf der Heide F. Gathering a Closed Chain of Robots on a Grid. In: Proceedings of the 30th International Parallel and Distributed Processing Symposium (IPDPS). IEEE; 2016:689-699. doi:10.1109/IPDPS.2016.51' apa: Abshoff, S., Cord-Landwehr, A., Fischer, M., Jung, D., & Meyer auf der Heide, F. (2016). Gathering a Closed Chain of Robots on a Grid. In Proceedings of the 30th International Parallel and Distributed Processing Symposium (IPDPS) (pp. 689–699). IEEE. https://doi.org/10.1109/IPDPS.2016.51 bibtex: '@inproceedings{Abshoff_Cord-Landwehr_Fischer_Jung_Meyer auf der Heide_2016, title={Gathering a Closed Chain of Robots on a Grid}, DOI={10.1109/IPDPS.2016.51}, booktitle={Proceedings of the 30th International Parallel and Distributed Processing Symposium (IPDPS)}, publisher={IEEE}, author={Abshoff, Sebastian and Cord-Landwehr, Andreas and Fischer, Matthias and Jung, Daniel and Meyer auf der Heide, Friedhelm}, year={2016}, pages={689–699} }' chicago: Abshoff, Sebastian, Andreas Cord-Landwehr, Matthias Fischer, Daniel Jung, and Friedhelm Meyer auf der Heide. “Gathering a Closed Chain of Robots on a Grid.” In Proceedings of the 30th International Parallel and Distributed Processing Symposium (IPDPS), 689–99. IEEE, 2016. https://doi.org/10.1109/IPDPS.2016.51. ieee: S. Abshoff, A. Cord-Landwehr, M. Fischer, D. Jung, and F. Meyer auf der Heide, “Gathering a Closed Chain of Robots on a Grid,” in Proceedings of the 30th International Parallel and Distributed Processing Symposium (IPDPS), 2016, pp. 689–699. mla: Abshoff, Sebastian, et al. “Gathering a Closed Chain of Robots on a Grid.” Proceedings of the 30th International Parallel and Distributed Processing Symposium (IPDPS), IEEE, 2016, pp. 689–99, doi:10.1109/IPDPS.2016.51. short: 'S. Abshoff, A. Cord-Landwehr, M. Fischer, D. Jung, F. Meyer auf der Heide, in: Proceedings of the 30th International Parallel and Distributed Processing Symposium (IPDPS), IEEE, 2016, pp. 689–699.' date_created: 2020-04-01T12:56:43Z date_updated: 2022-01-06T06:52:49Z department: - _id: '63' doi: 10.1109/IPDPS.2016.51 language: - iso: eng page: 689-699 publication: Proceedings of the 30th International Parallel and Distributed Processing Symposium (IPDPS) publisher: IEEE status: public title: Gathering a Closed Chain of Robots on a Grid type: conference user_id: '15415' year: '2016' ... --- _id: '16364' author: - first_name: Alexander full_name: Macker, Alexander last_name: Macker - first_name: Manuel full_name: Malatyali, Manuel last_name: Malatyali - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide citation: ama: 'Macker A, Malatyali M, Meyer auf der Heide F. On Competitive Algorithms for Approximations of Top-k-Position Monitoring of Distributed Streams. In: 2016 IEEE International Parallel and Distributed Processing Symposium (IPDPS). ; 2016. doi:10.1109/ipdps.2016.91' apa: Macker, A., Malatyali, M., & Meyer auf der Heide, F. (2016). On Competitive Algorithms for Approximations of Top-k-Position Monitoring of Distributed Streams. In 2016 IEEE International Parallel and Distributed Processing Symposium (IPDPS). https://doi.org/10.1109/ipdps.2016.91 bibtex: '@inproceedings{Macker_Malatyali_Meyer auf der Heide_2016, title={On Competitive Algorithms for Approximations of Top-k-Position Monitoring of Distributed Streams}, DOI={10.1109/ipdps.2016.91}, booktitle={2016 IEEE International Parallel and Distributed Processing Symposium (IPDPS)}, author={Macker, Alexander and Malatyali, Manuel and Meyer auf der Heide, Friedhelm}, year={2016} }' chicago: Macker, Alexander, Manuel Malatyali, and Friedhelm Meyer auf der Heide. “On Competitive Algorithms for Approximations of Top-k-Position Monitoring of Distributed Streams.” In 2016 IEEE International Parallel and Distributed Processing Symposium (IPDPS), 2016. https://doi.org/10.1109/ipdps.2016.91. ieee: A. Macker, M. Malatyali, and F. Meyer auf der Heide, “On Competitive Algorithms for Approximations of Top-k-Position Monitoring of Distributed Streams,” in 2016 IEEE International Parallel and Distributed Processing Symposium (IPDPS), 2016. mla: Macker, Alexander, et al. “On Competitive Algorithms for Approximations of Top-k-Position Monitoring of Distributed Streams.” 2016 IEEE International Parallel and Distributed Processing Symposium (IPDPS), 2016, doi:10.1109/ipdps.2016.91. short: 'A. Macker, M. Malatyali, F. Meyer auf der Heide, in: 2016 IEEE International Parallel and Distributed Processing Symposium (IPDPS), 2016.' date_created: 2020-04-02T10:14:25Z date_updated: 2022-01-06T06:52:49Z department: - _id: '63' doi: 10.1109/ipdps.2016.91 language: - iso: eng publication: 2016 IEEE International Parallel and Distributed Processing Symposium (IPDPS) publication_identifier: isbn: - '9781509021406' publication_status: published status: public title: On Competitive Algorithms for Approximations of Top-k-Position Monitoring of Distributed Streams type: conference user_id: '15415' year: '2016' ... --- _id: '16396' abstract: - lang: eng text: "We consider a scheduling problem where machines need to be rented from the\r\ncloud in order to process jobs. There are two types of machines available which\r\ncan be rented for machine-type dependent prices and for arbitrary durations.\r\nHowever, a machine-type dependent setup time is required before a machine is\r\navailable for processing. Jobs arrive online over time, have machine-type\r\ndependent sizes and have individual deadlines. The objective is to rent\r\nmachines and schedule jobs so as to meet all deadlines while minimizing the\r\nrental cost.\r\n Since we observe the slack of jobs to have a fundamental influence on the\r\ncompetitiveness, we study the model when instances are parameterized by their\r\n(minimum) slack. An instance is called to have a slack of $\\beta$ if, for all\r\njobs, the difference between the job's release time and the latest point in\r\ntime at which it needs to be started is at least $\\beta$. While for $\\beta < s$\r\nno finite competitiveness is possible, our main result is an\r\n$O(\\frac{c}{\\varepsilon} + \\frac{1}{\\varepsilon^3})$-competitive online\r\nalgorithm for $\\beta = (1+\\varepsilon)s$ with $\\frac{1}{s} \\leq \\varepsilon\r\n\\leq 1$, where $s$ and $c$ denotes the largest setup time and the cost ratio of\r\nthe machine-types, respectively. It is complemented by a lower bound of\r\n$\\Omega(\\frac{c}{\\varepsilon})$." author: - first_name: Alexander full_name: Mäcker, Alexander id: '13536' last_name: Mäcker - first_name: Manuel full_name: Malatyali, Manuel last_name: Malatyali - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide - first_name: Sören full_name: Riechers, Sören last_name: Riechers citation: ama: Mäcker A, Malatyali M, Meyer auf der Heide F, Riechers S. Cost-efficient Scheduling on Machines from the Cloud. arXiv:160901184. 2016. apa: Mäcker, A., Malatyali, M., Meyer auf der Heide, F., & Riechers, S. (2016). Cost-efficient Scheduling on Machines from the Cloud. ArXiv:1609.01184. bibtex: '@article{Mäcker_Malatyali_Meyer auf der Heide_Riechers_2016, title={Cost-efficient Scheduling on Machines from the Cloud}, journal={arXiv:1609.01184}, author={Mäcker, Alexander and Malatyali, Manuel and Meyer auf der Heide, Friedhelm and Riechers, Sören}, year={2016} }' chicago: Mäcker, Alexander, Manuel Malatyali, Friedhelm Meyer auf der Heide, and Sören Riechers. “Cost-Efficient Scheduling on Machines from the Cloud.” ArXiv:1609.01184, 2016. ieee: A. Mäcker, M. Malatyali, F. Meyer auf der Heide, and S. Riechers, “Cost-efficient Scheduling on Machines from the Cloud,” arXiv:1609.01184. 2016. mla: Mäcker, Alexander, et al. “Cost-Efficient Scheduling on Machines from the Cloud.” ArXiv:1609.01184, 2016. short: A. Mäcker, M. Malatyali, F. Meyer auf der Heide, S. Riechers, ArXiv:1609.01184 (2016). date_created: 2020-04-03T09:24:28Z date_updated: 2022-01-06T06:52:50Z department: - _id: '63' external_id: arxiv: - '1609.01184' language: - iso: eng publication: arXiv:1609.01184 status: public title: Cost-efficient Scheduling on Machines from the Cloud type: preprint user_id: '15415' year: '2016' ... --- _id: '139' abstract: - lang: eng text: 'We consider online optimization problems in which certain goods have to be acquired in order to provide a service or infrastructure. Classically, decisions for such problems are considered as final: one buys the goods. However, in many real world applications, there is a shift away from the idea of buying goods. Instead, leasing is often a more flexible and lucrative business model. Research has realized this shift and recently initiated the theoretical study of leasing models (Anthony and Gupta in Proceedings of the integer programming and combinatorial optimization: 12th International IPCO Conference, Ithaca, NY, USA, June 25–27, 2007; Meyerson in Proceedings of the 46th Annual IEEE Symposium on Foundations of Computer Science (FOCS 2005), 23–25 Oct 2005, Pittsburgh, PA, USA, 2005; Nagarajan and Williamson in Discret Optim 10(4):361–370, 2013) We extend this line of work and suggest a more systematic study of leasing aspects for a class of online optimization problems. We provide two major technical results. We introduce the leasing variant of online set multicover and give an O(log(mK)logn)-competitive algorithm (with n, m, and K being the number of elements, sets, and leases, respectively). Our results also imply improvements for the non-leasing variant of online set cover. Moreover, we extend results for the leasing variant of online facility location. Nagarajan and Williamson (Discret Optim 10(4):361–370, 2013) gave an O(Klogn)-competitive algorithm for this problem (with n and K being the number of clients and leases, respectively). We remove the dependency on n (and, thereby, on time). In general, this leads to a bound of O(lmaxloglmax) (with the maximal lease length lmax). For many natural problem instances, the bound improves to O(K2).' author: - first_name: Sebastian full_name: Abshoff, Sebastian last_name: Abshoff - first_name: Peter full_name: Kling, Peter last_name: Kling - first_name: Christine full_name: Markarian, Christine id: '37612' last_name: Markarian - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide - first_name: 'Peter ' full_name: 'Pietrzyk, Peter ' last_name: Pietrzyk citation: ama: Abshoff S, Kling P, Markarian C, Meyer auf der Heide F, Pietrzyk P. Towards the price of leasing online. Journal of Combinatorial Optimization. 2016;(4):1197--1216. doi:10.1007/s10878-015-9915-5 apa: Abshoff, S., Kling, P., Markarian, C., Meyer auf der Heide, F., & Pietrzyk, P. (2016). Towards the price of leasing online. Journal of Combinatorial Optimization, (4), 1197--1216. https://doi.org/10.1007/s10878-015-9915-5 bibtex: '@article{Abshoff_Kling_Markarian_Meyer auf der Heide_Pietrzyk_2016, title={Towards the price of leasing online}, DOI={10.1007/s10878-015-9915-5}, number={4}, journal={Journal of Combinatorial Optimization}, publisher={Springer}, author={Abshoff, Sebastian and Kling, Peter and Markarian, Christine and Meyer auf der Heide, Friedhelm and Pietrzyk, Peter }, year={2016}, pages={1197--1216} }' chicago: 'Abshoff, Sebastian, Peter Kling, Christine Markarian, Friedhelm Meyer auf der Heide, and Peter Pietrzyk. “Towards the Price of Leasing Online.” Journal of Combinatorial Optimization, no. 4 (2016): 1197--1216. https://doi.org/10.1007/s10878-015-9915-5.' ieee: S. Abshoff, P. Kling, C. Markarian, F. Meyer auf der Heide, and P. Pietrzyk, “Towards the price of leasing online,” Journal of Combinatorial Optimization, no. 4, pp. 1197--1216, 2016. mla: Abshoff, Sebastian, et al. “Towards the Price of Leasing Online.” Journal of Combinatorial Optimization, no. 4, Springer, 2016, pp. 1197--1216, doi:10.1007/s10878-015-9915-5. short: S. Abshoff, P. Kling, C. Markarian, F. Meyer auf der Heide, P. Pietrzyk, Journal of Combinatorial Optimization (2016) 1197--1216. date_created: 2017-10-17T12:41:18Z date_updated: 2022-01-06T06:51:46Z ddc: - '000' department: - _id: '63' doi: 10.1007/s10878-015-9915-5 file: - access_level: closed content_type: application/pdf creator: ups date_created: 2018-11-02T15:57:25Z date_updated: 2018-11-02T15:57:25Z file_id: '5318' file_name: Abshoff-TowardsThePriceOfLeasingOnline.pdf file_size: 654903 relation: main_file success: 1 file_date_updated: 2018-11-02T15:57:25Z has_accepted_license: '1' issue: '4' language: - iso: eng page: ' 1197--1216' project: - _id: '1' name: SFB 901 - _id: '5' name: SFB 901 - Subprojekt A1 - _id: '16' name: SFB 901 - Subprojekt C4 - _id: '2' name: SFB 901 - Project Area A - _id: '4' name: SFB 901 - Project Area C publication: Journal of Combinatorial Optimization publisher: Springer status: public title: Towards the price of leasing online type: journal_article user_id: '477' year: '2016' ... --- _id: '143' abstract: - lang: eng text: 'We present an efficient parallel algorithm for the general Monotone Circuit Value Problem (MCVP) with n gates and an underlying graph of bounded genus k. Our algorithm generalizes a recent result by Limaye et al. who showed that MCVP with toroidal embedding (genus 1) is in NC when the input contains a toroidal embedding of the circuit. In addition to extending this result from genus 1 to any bounded genus k, and unlike the work reported by Limaye et al., we do not require a precomputed embedding to be given. Most importantly, our results imply that given a P-complete problem, it is possible to find an algorithm that makes the problem fall into NC by fixing one or more parameters. Hence, we deduce the interesting analogy: Fixed Parameter Parallelizable (FPP) is with respect to P-complete what Fixed Parameter Tractable (FPT) is with respect to NP-complete. Similar work that uses treewidth as parameter was also presented by Elberfeld et al. in [6].' author: - first_name: 'Faisal N. ' full_name: 'Abu-Khzam, Faisal N. ' last_name: Abu-Khzam - first_name: Shouwei full_name: Li, Shouwei last_name: Li - first_name: Christine full_name: Markarian, Christine id: '37612' last_name: Markarian - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide - first_name: Pavel full_name: Podlipyan, Pavel last_name: Podlipyan citation: ama: 'Abu-Khzam FN, Li S, Markarian C, Meyer auf der Heide F, Podlipyan P. The Monotone Circuit Value Problem with Bounded Genus Is in NC. In: Proceedings of the 22nd International Conference on Computing and Combinatorics (COCOON). LNCS. ; 2016:92-102. doi:10.1007/978-3-319-42634-1_8' apa: Abu-Khzam, F. N., Li, S., Markarian, C., Meyer auf der Heide, F., & Podlipyan, P. (2016). The Monotone Circuit Value Problem with Bounded Genus Is in NC. In Proceedings of the 22nd International Conference on Computing and Combinatorics (COCOON) (pp. 92–102). https://doi.org/10.1007/978-3-319-42634-1_8 bibtex: '@inproceedings{Abu-Khzam_Li_Markarian_Meyer auf der Heide_Podlipyan_2016, series={LNCS}, title={The Monotone Circuit Value Problem with Bounded Genus Is in NC}, DOI={10.1007/978-3-319-42634-1_8}, booktitle={Proceedings of the 22nd International Conference on Computing and Combinatorics (COCOON)}, author={Abu-Khzam, Faisal N. and Li, Shouwei and Markarian, Christine and Meyer auf der Heide, Friedhelm and Podlipyan, Pavel}, year={2016}, pages={92–102}, collection={LNCS} }' chicago: Abu-Khzam, Faisal N. , Shouwei Li, Christine Markarian, Friedhelm Meyer auf der Heide, and Pavel Podlipyan. “The Monotone Circuit Value Problem with Bounded Genus Is in NC.” In Proceedings of the 22nd International Conference on Computing and Combinatorics (COCOON), 92–102. LNCS, 2016. https://doi.org/10.1007/978-3-319-42634-1_8. ieee: F. N. Abu-Khzam, S. Li, C. Markarian, F. Meyer auf der Heide, and P. Podlipyan, “The Monotone Circuit Value Problem with Bounded Genus Is in NC,” in Proceedings of the 22nd International Conference on Computing and Combinatorics (COCOON), 2016, pp. 92–102. mla: Abu-Khzam, Faisal N., et al. “The Monotone Circuit Value Problem with Bounded Genus Is in NC.” Proceedings of the 22nd International Conference on Computing and Combinatorics (COCOON), 2016, pp. 92–102, doi:10.1007/978-3-319-42634-1_8. short: 'F.N. Abu-Khzam, S. Li, C. Markarian, F. Meyer auf der Heide, P. Podlipyan, in: Proceedings of the 22nd International Conference on Computing and Combinatorics (COCOON), 2016, pp. 92–102.' date_created: 2017-10-17T12:41:19Z date_updated: 2022-01-06T06:51:57Z ddc: - '000' department: - _id: '63' doi: 10.1007/978-3-319-42634-1_8 file: - access_level: closed content_type: application/pdf creator: ups date_created: 2018-11-02T14:20:45Z date_updated: 2018-11-02T14:20:45Z file_id: '5269' file_name: TheMonotoneCircuitValueProblem.pdf file_size: 234587 relation: main_file success: 1 file_date_updated: 2018-11-02T14:20:45Z has_accepted_license: '1' language: - iso: eng page: 92-102 project: - _id: '1' name: SFB 901 - _id: '5' name: SFB 901 - Subprojekt A1 - _id: '2' name: SFB 901 - Project Area A publication: Proceedings of the 22nd International Conference on Computing and Combinatorics (COCOON) series_title: LNCS status: public title: The Monotone Circuit Value Problem with Bounded Genus Is in NC type: conference user_id: '477' year: '2016' ... --- _id: '145' abstract: - lang: eng text: 'Comparative evaluations of peer-to-peer protocols through simulations are a viable approach to judge the performance and costs of the individual protocols in large-scale networks. In order to support this work, we present the peer-to-peer system simulator PeerfactSim.KOM, which we extended over the last years. PeerfactSim.KOM comes with an extensive layer model to support various facets and protocols of peer-to-peer networking. In this article, we describe PeerfactSim.KOM and show how it can be used for detailed measurements of large-scale peer-to-peer networks. We enhanced PeerfactSim.KOM with a fine-grained analyzer concept, with exhaustive automated measurements and gnuplot generators as well as a coordination control to evaluate sets of experiment setups in parallel. Thus, by configuring all experiments and protocols only once and starting the simulator, all desired measurements are performed, analyzed, evaluated, and combined, resulting in a holistic environment for the comparative evaluation of peer-to-peer systems. An immediate comparison of different configurations and overlays under different aspects is possible directly after the execution without any manual post-processing. ' author: - first_name: Matthias full_name: Feldotto, Matthias id: '14052' last_name: Feldotto orcid: 0000-0003-1348-6516 - first_name: Kalman full_name: Graffi, Kalman last_name: Graffi citation: ama: 'Feldotto M, Graffi K. Systematic evaluation of peer-to-peer systems using PeerfactSim.KOM. Concurrency and Computation: Practice and Experience. 2016;28(5):1655-1677. doi:10.1002/cpe.3716' apa: 'Feldotto, M., & Graffi, K. (2016). Systematic evaluation of peer-to-peer systems using PeerfactSim.KOM. Concurrency and Computation: Practice and Experience, 28(5), 1655–1677. https://doi.org/10.1002/cpe.3716' bibtex: '@article{Feldotto_Graffi_2016, title={Systematic evaluation of peer-to-peer systems using PeerfactSim.KOM}, volume={28}, DOI={10.1002/cpe.3716}, number={5}, journal={Concurrency and Computation: Practice and Experience}, publisher={Wiley Online Library}, author={Feldotto, Matthias and Graffi, Kalman}, year={2016}, pages={1655–1677} }' chicago: 'Feldotto, Matthias, and Kalman Graffi. “Systematic Evaluation of Peer-to-Peer Systems Using PeerfactSim.KOM.” Concurrency and Computation: Practice and Experience 28, no. 5 (2016): 1655–77. https://doi.org/10.1002/cpe.3716.' ieee: 'M. Feldotto and K. Graffi, “Systematic evaluation of peer-to-peer systems using PeerfactSim.KOM,” Concurrency and Computation: Practice and Experience, vol. 28, no. 5, pp. 1655–1677, 2016.' mla: 'Feldotto, Matthias, and Kalman Graffi. “Systematic Evaluation of Peer-to-Peer Systems Using PeerfactSim.KOM.” Concurrency and Computation: Practice and Experience, vol. 28, no. 5, Wiley Online Library, 2016, pp. 1655–77, doi:10.1002/cpe.3716.' short: 'M. Feldotto, K. Graffi, Concurrency and Computation: Practice and Experience 28 (2016) 1655–1677.' date_created: 2017-10-17T12:41:20Z date_updated: 2022-01-06T06:52:00Z ddc: - '040' department: - _id: '79' - _id: '63' - _id: '541' doi: 10.1002/cpe.3716 file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-21T12:57:57Z date_updated: 2018-03-21T12:57:57Z file_id: '1556' file_name: 145-Feldotto_et_al-2016-Concurrency_and_Computation-_Practice_and_Experience.pdf file_size: 3121363 relation: main_file success: 1 file_date_updated: 2018-03-21T12:57:57Z has_accepted_license: '1' intvolume: ' 28' issue: '5' page: 1655-1677 project: - _id: '1' name: SFB 901 - _id: '5' name: SFB 901 - Subprojekt A1 - _id: '2' name: SFB 901 - Project Area A publication: 'Concurrency and Computation: Practice and Experience' publication_status: published publisher: Wiley Online Library status: public title: Systematic evaluation of peer-to-peer systems using PeerfactSim.KOM type: journal_article user_id: '14052' volume: 28 year: '2016' ... --- _id: '251' author: - first_name: Karlson full_name: Pfannschmidt, Karlson last_name: Pfannschmidt citation: ama: Pfannschmidt K. Solving the Aggregated Bandits Problem. Universität Paderborn; 2015. apa: Pfannschmidt, K. (2015). Solving the aggregated bandits problem. Universität Paderborn. bibtex: '@book{Pfannschmidt_2015, title={Solving the aggregated bandits problem}, publisher={Universität Paderborn}, author={Pfannschmidt, Karlson}, year={2015} }' chicago: Pfannschmidt, Karlson. Solving the Aggregated Bandits Problem. Universität Paderborn, 2015. ieee: K. Pfannschmidt, Solving the aggregated bandits problem. Universität Paderborn, 2015. mla: Pfannschmidt, Karlson. Solving the Aggregated Bandits Problem. Universität Paderborn, 2015. short: K. Pfannschmidt, Solving the Aggregated Bandits Problem, Universität Paderborn, 2015. date_created: 2017-10-17T12:41:41Z date_updated: 2022-01-06T06:56:50Z department: - _id: '63' - _id: '541' project: - _id: '1' name: SFB 901 - _id: '7' name: SFB 901 - Subprojekt A3 - _id: '2' name: SFB 901 - Project Area A publisher: Universität Paderborn status: public supervisor: - first_name: Alexander full_name: Skopalik, Alexander id: '40384' last_name: Skopalik title: Solving the aggregated bandits problem type: mastersthesis user_id: '14052' year: '2015' ... --- _id: '19959' author: - first_name: Mostafa full_name: Wahby, Mostafa last_name: Wahby - first_name: Heiko full_name: Hamann, Heiko last_name: Hamann citation: ama: 'Wahby M, Hamann H. On the Tradeoff between Hardware Protection and Optimization Success: A Case Study in Onboard Evolutionary Robotics for Autonomous Parallel Parking. In: Applications of Evolutionary Computation (EvoApplications 2015). ; 2015. doi:10.1007/978-3-319-16549-3_61' apa: 'Wahby, M., & Hamann, H. (2015). On the Tradeoff between Hardware Protection and Optimization Success: A Case Study in Onboard Evolutionary Robotics for Autonomous Parallel Parking. In Applications of Evolutionary Computation (EvoApplications 2015). https://doi.org/10.1007/978-3-319-16549-3_61' bibtex: '@inproceedings{Wahby_Hamann_2015, title={On the Tradeoff between Hardware Protection and Optimization Success: A Case Study in Onboard Evolutionary Robotics for Autonomous Parallel Parking}, DOI={10.1007/978-3-319-16549-3_61}, booktitle={Applications of Evolutionary Computation (EvoApplications 2015)}, author={Wahby, Mostafa and Hamann, Heiko}, year={2015} }' chicago: 'Wahby, Mostafa, and Heiko Hamann. “On the Tradeoff between Hardware Protection and Optimization Success: A Case Study in Onboard Evolutionary Robotics for Autonomous Parallel Parking.” In Applications of Evolutionary Computation (EvoApplications 2015), 2015. https://doi.org/10.1007/978-3-319-16549-3_61.' ieee: 'M. Wahby and H. Hamann, “On the Tradeoff between Hardware Protection and Optimization Success: A Case Study in Onboard Evolutionary Robotics for Autonomous Parallel Parking,” in Applications of Evolutionary Computation (EvoApplications 2015), 2015.' mla: 'Wahby, Mostafa, and Heiko Hamann. “On the Tradeoff between Hardware Protection and Optimization Success: A Case Study in Onboard Evolutionary Robotics for Autonomous Parallel Parking.” Applications of Evolutionary Computation (EvoApplications 2015), 2015, doi:10.1007/978-3-319-16549-3_61.' short: 'M. Wahby, H. Hamann, in: Applications of Evolutionary Computation (EvoApplications 2015), 2015.' date_created: 2020-10-08T12:36:48Z date_updated: 2022-01-06T06:54:17Z department: - _id: '63' - _id: '238' doi: 10.1007/978-3-319-16549-3_61 language: - iso: eng publication: Applications of Evolutionary Computation (EvoApplications 2015) status: public title: 'On the Tradeoff between Hardware Protection and Optimization Success: A Case Study in Onboard Evolutionary Robotics for Autonomous Parallel Parking' type: conference user_id: '15415' year: '2015' ... --- _id: '19960' abstract: - lang: eng text: Besides the life-as-it-could-be driver of artificial life research there is also the concept of extending natural life by creating hybrids or mixed societies that are built from natural and artificial components. In this paper we motivate and present the research program of the project flora robotica. Our objective is to develop and to investigate closely linked symbiotic relationships between robots and natural plants and to explore the potentials of a plant-robot society able to produce architectural artifacts and living spaces. These robot-plant bio-hybrids create synergies that allow for new functions of plants and robots. They also create novel design opportunities for an architecture that fuses the design and construction phase. The bio-hybrid is an example of mixed societies between 'hard' artificial and 'wet' natural life, which enables an interaction between natural and artificial ecologies. They form an embodied, self-organizing, and distributed cognitive system which is supposed to grow and develop over long periods of time resulting in the creation of meaningful architectural structures. A key idea is to assign equal roles to robots and plants in order to create a highly integrated, symbiotic system. Besides the gain of knowledge, this project has the objective to create a bio-hybrid system with a defined function and application -- growing architectural artifacts. author: - first_name: Heiko full_name: Hamann, Heiko last_name: Hamann - first_name: Mostafa full_name: Wahby, Mostafa last_name: Wahby - first_name: Thomas full_name: Schmickl, Thomas last_name: Schmickl - first_name: Payam full_name: Zahadat, Payam last_name: Zahadat - first_name: Daniel full_name: Hofstadler, Daniel last_name: Hofstadler - first_name: Kasper full_name: Stoy, Kasper last_name: Stoy - first_name: Sebastian full_name: Risi, Sebastian last_name: Risi - first_name: Andres full_name: Faina, Andres last_name: Faina - first_name: Frank full_name: Veenstra, Frank last_name: Veenstra - first_name: Serge full_name: Kernbach, Serge last_name: Kernbach - first_name: Igor full_name: Kuksin, Igor last_name: Kuksin - first_name: Olga full_name: Kernbach, Olga last_name: Kernbach - first_name: Phil full_name: Ayres, Phil last_name: Ayres - first_name: Przemyslaw full_name: Wojtaszek, Przemyslaw last_name: Wojtaszek citation: ama: 'Hamann H, Wahby M, Schmickl T, et al. Flora Robotica - Mixed Societies of Symbiotic Robot-Plant Bio-Hybrids. In: Proceedings of the 2015 IEEE Symposium on Artificial Life (IEEE ALIFE’15). ; 2015. doi:10.1109/ssci.2015.158' apa: Hamann, H., Wahby, M., Schmickl, T., Zahadat, P., Hofstadler, D., Stoy, K., … Wojtaszek, P. (2015). Flora Robotica - Mixed Societies of Symbiotic Robot-Plant Bio-Hybrids. In Proceedings of the 2015 IEEE Symposium on Artificial Life (IEEE ALIFE’15). https://doi.org/10.1109/ssci.2015.158 bibtex: '@inproceedings{Hamann_Wahby_Schmickl_Zahadat_Hofstadler_Stoy_Risi_Faina_Veenstra_Kernbach_et al._2015, title={Flora Robotica - Mixed Societies of Symbiotic Robot-Plant Bio-Hybrids}, DOI={10.1109/ssci.2015.158}, booktitle={Proceedings of the 2015 IEEE Symposium on Artificial Life (IEEE ALIFE’15)}, author={Hamann, Heiko and Wahby, Mostafa and Schmickl, Thomas and Zahadat, Payam and Hofstadler, Daniel and Stoy, Kasper and Risi, Sebastian and Faina, Andres and Veenstra, Frank and Kernbach, Serge and et al.}, year={2015} }' chicago: Hamann, Heiko, Mostafa Wahby, Thomas Schmickl, Payam Zahadat, Daniel Hofstadler, Kasper Stoy, Sebastian Risi, et al. “Flora Robotica - Mixed Societies of Symbiotic Robot-Plant Bio-Hybrids.” In Proceedings of the 2015 IEEE Symposium on Artificial Life (IEEE ALIFE’15), 2015. https://doi.org/10.1109/ssci.2015.158. ieee: H. Hamann et al., “Flora Robotica - Mixed Societies of Symbiotic Robot-Plant Bio-Hybrids,” in Proceedings of the 2015 IEEE Symposium on Artificial Life (IEEE ALIFE’15), 2015. mla: Hamann, Heiko, et al. “Flora Robotica - Mixed Societies of Symbiotic Robot-Plant Bio-Hybrids.” Proceedings of the 2015 IEEE Symposium on Artificial Life (IEEE ALIFE’15), 2015, doi:10.1109/ssci.2015.158. short: 'H. Hamann, M. Wahby, T. Schmickl, P. Zahadat, D. Hofstadler, K. Stoy, S. Risi, A. Faina, F. Veenstra, S. Kernbach, I. Kuksin, O. Kernbach, P. Ayres, P. Wojtaszek, in: Proceedings of the 2015 IEEE Symposium on Artificial Life (IEEE ALIFE’15), 2015.' date_created: 2020-10-08T12:44:10Z date_updated: 2022-01-06T06:54:17Z department: - _id: '63' - _id: '238' doi: 10.1109/ssci.2015.158 language: - iso: eng publication: Proceedings of the 2015 IEEE Symposium on Artificial Life (IEEE ALIFE'15) publication_identifier: isbn: - '9781479975600' publication_status: published status: public title: Flora Robotica - Mixed Societies of Symbiotic Robot-Plant Bio-Hybrids type: conference user_id: '15415' year: '2015' ... --- _id: '19962' abstract: - lang: eng text: Recent approaches in evolutionary robotics (ER) propose to generate behavioral diversity in order to evolve desired behaviors more easily. These approaches require the definition of a behavioral distance, which often includes task-specific features and hence a priori knowledge. Alternative methods, which do not explicitly force selective pressure towards diversity (SPTD) but still generate it, are known from the field of artificial life, such as in artificial ecologies (AEs). In this study, we investigate how SPTD is generated without task-specific behavioral features or other forms of a priori knowledge and detect how methods of generating SPTD can be transferred from the domain of AE to ER. A promising finding is that in both types of systems, in systems from ER that generate behavioral diversity and also in the investigated speciation model, selective pressure is generated towards unpopulated regions of search space. In a simple case study we investigate the practical implications of these findings and point to options for transferring the idea of self-organizing SPTD in AEs to the domain of ER. author: - first_name: Heiko full_name: Hamann, Heiko last_name: Hamann citation: ama: 'Hamann H. Lessons from Speciation Dynamics: How to Generate Selective Pressure Towards Diversity. Artificial Life. 2015:464-480. doi:10.1162/artl_a_00186' apa: 'Hamann, H. (2015). Lessons from Speciation Dynamics: How to Generate Selective Pressure Towards Diversity. Artificial Life, 464–480. https://doi.org/10.1162/artl_a_00186' bibtex: '@article{Hamann_2015, title={Lessons from Speciation Dynamics: How to Generate Selective Pressure Towards Diversity}, DOI={10.1162/artl_a_00186}, journal={Artificial Life}, author={Hamann, Heiko}, year={2015}, pages={464–480} }' chicago: 'Hamann, Heiko. “Lessons from Speciation Dynamics: How to Generate Selective Pressure Towards Diversity.” Artificial Life, 2015, 464–80. https://doi.org/10.1162/artl_a_00186.' ieee: 'H. Hamann, “Lessons from Speciation Dynamics: How to Generate Selective Pressure Towards Diversity,” Artificial Life, pp. 464–480, 2015.' mla: 'Hamann, Heiko. “Lessons from Speciation Dynamics: How to Generate Selective Pressure Towards Diversity.” Artificial Life, 2015, pp. 464–80, doi:10.1162/artl_a_00186.' short: H. Hamann, Artificial Life (2015) 464–480. date_created: 2020-10-08T14:36:25Z date_updated: 2022-01-06T06:54:17Z department: - _id: '63' - _id: '238' doi: 10.1162/artl_a_00186 language: - iso: eng page: 464-480 publication: Artificial Life publication_identifier: issn: - 1064-5462 - 1530-9185 publication_status: published status: public title: 'Lessons from Speciation Dynamics: How to Generate Selective Pressure Towards Diversity' type: journal_article user_id: '15415' year: '2015' ... --- _id: '19966' abstract: - lang: eng text: Aggregation is a crucial task in swarm robotics to ensure cooperation. We investigate the task of aggregation on an area specified indirectly by certain environmental features, here it is a light distribution. We extend the original BEECLUST algorithm, that implements an aggregation behavior, to an adaptive variant that automatically adapts to any light conditions. We compare these two control algorithms in a number of swarm robot experiments with different light conditions. The improved, adaptive variant is found to be significantly better in the tested setup. author: - first_name: Mostafa full_name: Wahby, Mostafa last_name: Wahby - first_name: Alexander full_name: Weinhold, Alexander last_name: Weinhold - first_name: Heiko full_name: Hamann, Heiko last_name: Hamann citation: ama: 'Wahby M, Weinhold A, Hamann H. Revisiting BEECLUST: Aggregation of Swarm Robots with Adaptiveness to Different Light Settings. In: Proceedings of the 9th EAI International Conference on Bio-Inspired Information and Communications Technologies (Formerly BIONETICS). ; 2015. doi:10.4108/eai.3-12-2015.2262877' apa: 'Wahby, M., Weinhold, A., & Hamann, H. (2015). Revisiting BEECLUST: Aggregation of Swarm Robots with Adaptiveness to Different Light Settings. In Proceedings of the 9th EAI International Conference on Bio-inspired Information and Communications Technologies (formerly BIONETICS). https://doi.org/10.4108/eai.3-12-2015.2262877' bibtex: '@inproceedings{Wahby_Weinhold_Hamann_2015, title={Revisiting BEECLUST: Aggregation of Swarm Robots with Adaptiveness to Different Light Settings}, DOI={10.4108/eai.3-12-2015.2262877}, booktitle={Proceedings of the 9th EAI International Conference on Bio-inspired Information and Communications Technologies (formerly BIONETICS)}, author={Wahby, Mostafa and Weinhold, Alexander and Hamann, Heiko}, year={2015} }' chicago: 'Wahby, Mostafa, Alexander Weinhold, and Heiko Hamann. “Revisiting BEECLUST: Aggregation of Swarm Robots with Adaptiveness to Different Light Settings.” In Proceedings of the 9th EAI International Conference on Bio-Inspired Information and Communications Technologies (Formerly BIONETICS), 2015. https://doi.org/10.4108/eai.3-12-2015.2262877.' ieee: 'M. Wahby, A. Weinhold, and H. Hamann, “Revisiting BEECLUST: Aggregation of Swarm Robots with Adaptiveness to Different Light Settings,” in Proceedings of the 9th EAI International Conference on Bio-inspired Information and Communications Technologies (formerly BIONETICS), 2015.' mla: 'Wahby, Mostafa, et al. “Revisiting BEECLUST: Aggregation of Swarm Robots with Adaptiveness to Different Light Settings.” Proceedings of the 9th EAI International Conference on Bio-Inspired Information and Communications Technologies (Formerly BIONETICS), 2015, doi:10.4108/eai.3-12-2015.2262877.' short: 'M. Wahby, A. Weinhold, H. Hamann, in: Proceedings of the 9th EAI International Conference on Bio-Inspired Information and Communications Technologies (Formerly BIONETICS), 2015.' date_created: 2020-10-09T13:41:56Z date_updated: 2022-01-06T06:54:17Z department: - _id: '63' - _id: '238' doi: 10.4108/eai.3-12-2015.2262877 language: - iso: eng publication: Proceedings of the 9th EAI International Conference on Bio-inspired Information and Communications Technologies (formerly BIONETICS) publication_identifier: isbn: - '9781631901003' publication_status: published status: public title: 'Revisiting BEECLUST: Aggregation of Swarm Robots with Adaptiveness to Different Light Settings' type: conference user_id: '15415' year: '2015' ... --- _id: '19967' author: - first_name: Mostafa full_name: Wahby, Mostafa last_name: Wahby - first_name: Mohammad full_name: Divband Soorati, Mohammad last_name: Divband Soorati - first_name: Sebastian full_name: von Mammen, Sebastian last_name: von Mammen - first_name: Heiko full_name: Hamann, Heiko last_name: Hamann citation: ama: 'Wahby M, Divband Soorati M, von Mammen S, Hamann H. Evolution of Controllers for Robot-Plant Bio-Hybdrids: A Simple Case Study Using a Model of Plant Growth and Motion. In: Proceedings. 25. Computational Intelligence Workshop. ; 2015.' apa: 'Wahby, M., Divband Soorati, M., von Mammen, S., & Hamann, H. (2015). Evolution of Controllers for Robot-Plant Bio-Hybdrids: A Simple Case Study Using a Model of Plant Growth and Motion. In Proceedings. 25. Computational Intelligence Workshop.' bibtex: '@inproceedings{Wahby_Divband Soorati_von Mammen_Hamann_2015, title={Evolution of Controllers for Robot-Plant Bio-Hybdrids: A Simple Case Study Using a Model of Plant Growth and Motion}, booktitle={Proceedings. 25. Computational Intelligence Workshop}, author={Wahby, Mostafa and Divband Soorati, Mohammad and von Mammen, Sebastian and Hamann, Heiko}, year={2015} }' chicago: 'Wahby, Mostafa, Mohammad Divband Soorati, Sebastian von Mammen, and Heiko Hamann. “Evolution of Controllers for Robot-Plant Bio-Hybdrids: A Simple Case Study Using a Model of Plant Growth and Motion.” In Proceedings. 25. Computational Intelligence Workshop, 2015.' ieee: 'M. Wahby, M. Divband Soorati, S. von Mammen, and H. Hamann, “Evolution of Controllers for Robot-Plant Bio-Hybdrids: A Simple Case Study Using a Model of Plant Growth and Motion,” in Proceedings. 25. Computational Intelligence Workshop, 2015.' mla: 'Wahby, Mostafa, et al. “Evolution of Controllers for Robot-Plant Bio-Hybdrids: A Simple Case Study Using a Model of Plant Growth and Motion.” Proceedings. 25. Computational Intelligence Workshop, 2015.' short: 'M. Wahby, M. Divband Soorati, S. von Mammen, H. Hamann, in: Proceedings. 25. Computational Intelligence Workshop, 2015.' date_created: 2020-10-09T13:50:38Z date_updated: 2022-01-06T06:54:17Z department: - _id: '63' - _id: '238' language: - iso: eng publication: Proceedings. 25. Computational Intelligence Workshop status: public title: 'Evolution of Controllers for Robot-Plant Bio-Hybdrids: A Simple Case Study Using a Model of Plant Growth and Motion' type: conference user_id: '15415' year: '2015' ... --- _id: '19980' abstract: - lang: eng text: Fitness function design is known to be a critical feature of the evolutionary-robotics approach. Potentially, the complexity of evolving a successful controller for a given task can be reduced by integrating a priori knowledge into the fitness function which complicates the comparability of studies in evolutionary robotics. Still, there are only few publications that study the actual effects of different fitness functions on the robot's performance. In this paper, we follow the fitness function classification of Nelson et al. (2009) and investigate a selection of four classes of fitness functions that require different degrees of a priori knowledge. The robot controllers are evolved in simulation using NEAT and we investigate different tasks including obstacle avoidance and (periodic) goal homing. The best evolved controllers were then post-evaluated by examining their potential for adaptation, determining their convergence rates, and using cross-comparisons based on the different fitness function classes. The results confirm that the integration of more a priori knowledge can simplify a task and show that more attention should be paid to fitness function classes when comparing different studies. author: - first_name: Heiko full_name: Hamann, Heiko last_name: Hamann - first_name: Mohammad full_name: Divband Soorati, Mohammad last_name: Divband Soorati citation: ama: 'Hamann H, Divband Soorati M. The Effect of Fitness Function Design on Performance in Evolutionary Robotics: The Influence of a Priori Knowledge. In: Proceedings of the Genetic and Evolutionary Computation Conference (GECCO 2015). ACM; 2015:153-160. doi:10.1145/2739480.2754676' apa: 'Hamann, H., & Divband Soorati, M. (2015). The Effect of Fitness Function Design on Performance in Evolutionary Robotics: The Influence of a Priori Knowledge. In Proceedings of the Genetic and Evolutionary Computation Conference (GECCO 2015) (pp. 153–160). ACM. https://doi.org/10.1145/2739480.2754676' bibtex: '@inproceedings{Hamann_Divband Soorati_2015, title={The Effect of Fitness Function Design on Performance in Evolutionary Robotics: The Influence of a Priori Knowledge}, DOI={10.1145/2739480.2754676}, booktitle={Proceedings of the Genetic and Evolutionary Computation Conference (GECCO 2015)}, publisher={ACM}, author={Hamann, Heiko and Divband Soorati, Mohammad}, year={2015}, pages={153–160} }' chicago: 'Hamann, Heiko, and Mohammad Divband Soorati. “The Effect of Fitness Function Design on Performance in Evolutionary Robotics: The Influence of a Priori Knowledge.” In Proceedings of the Genetic and Evolutionary Computation Conference (GECCO 2015), 153–60. ACM, 2015. https://doi.org/10.1145/2739480.2754676.' ieee: 'H. Hamann and M. Divband Soorati, “The Effect of Fitness Function Design on Performance in Evolutionary Robotics: The Influence of a Priori Knowledge,” in Proceedings of the Genetic and Evolutionary Computation Conference (GECCO 2015), 2015, pp. 153–160.' mla: 'Hamann, Heiko, and Mohammad Divband Soorati. “The Effect of Fitness Function Design on Performance in Evolutionary Robotics: The Influence of a Priori Knowledge.” Proceedings of the Genetic and Evolutionary Computation Conference (GECCO 2015), ACM, 2015, pp. 153–60, doi:10.1145/2739480.2754676.' short: 'H. Hamann, M. Divband Soorati, in: Proceedings of the Genetic and Evolutionary Computation Conference (GECCO 2015), ACM, 2015, pp. 153–160.' date_created: 2020-10-12T13:12:25Z date_updated: 2022-01-06T06:54:17Z department: - _id: '63' - _id: '238' doi: 10.1145/2739480.2754676 language: - iso: eng page: 153-160 publication: Proceedings of the Genetic and Evolutionary Computation Conference (GECCO 2015) publisher: ACM status: public title: 'The Effect of Fitness Function Design on Performance in Evolutionary Robotics: The Influence of a Priori Knowledge' type: conference user_id: '15415' year: '2015' ... --- _id: '19988' author: - first_name: Heiko full_name: Hamann, Heiko last_name: Hamann - first_name: Thomas full_name: Schmickl, Thomas last_name: Schmickl - first_name: Payam full_name: Zahadat, Payam last_name: Zahadat citation: ama: 'Hamann H, Schmickl T, Zahadat P. Evolving Collective Behaviors With Diverse But Predictable Sensor States. In: 13th European Conference on Artificial Life (ECAL 2015). MIT Press; 2015:174. doi:10.7551/978-0-262-33027-5-ch036' apa: Hamann, H., Schmickl, T., & Zahadat, P. (2015). Evolving Collective Behaviors With Diverse But Predictable Sensor States. In 13th European Conference on Artificial Life (ECAL 2015) (p. 174). MIT Press. https://doi.org/10.7551/978-0-262-33027-5-ch036 bibtex: '@inproceedings{Hamann_Schmickl_Zahadat_2015, title={Evolving Collective Behaviors With Diverse But Predictable Sensor States}, DOI={10.7551/978-0-262-33027-5-ch036}, booktitle={13th European Conference on Artificial Life (ECAL 2015)}, publisher={MIT Press}, author={Hamann, Heiko and Schmickl, Thomas and Zahadat, Payam}, year={2015}, pages={174} }' chicago: Hamann, Heiko, Thomas Schmickl, and Payam Zahadat. “Evolving Collective Behaviors With Diverse But Predictable Sensor States.” In 13th European Conference on Artificial Life (ECAL 2015), 174. MIT Press, 2015. https://doi.org/10.7551/978-0-262-33027-5-ch036. ieee: H. Hamann, T. Schmickl, and P. Zahadat, “Evolving Collective Behaviors With Diverse But Predictable Sensor States,” in 13th European Conference on Artificial Life (ECAL 2015), 2015, p. 174. mla: Hamann, Heiko, et al. “Evolving Collective Behaviors With Diverse But Predictable Sensor States.” 13th European Conference on Artificial Life (ECAL 2015), MIT Press, 2015, p. 174, doi:10.7551/978-0-262-33027-5-ch036. short: 'H. Hamann, T. Schmickl, P. Zahadat, in: 13th European Conference on Artificial Life (ECAL 2015), MIT Press, 2015, p. 174.' date_created: 2020-10-13T08:50:38Z date_updated: 2022-01-06T06:54:17Z department: - _id: '63' - _id: '238' doi: 10.7551/978-0-262-33027-5-ch036 language: - iso: eng page: '174' publication: 13th European Conference on Artificial Life (ECAL 2015) publisher: MIT Press status: public title: Evolving Collective Behaviors With Diverse But Predictable Sensor States type: conference user_id: '15415' year: '2015' ... --- _id: '19989' author: - first_name: Heiko full_name: Hamann, Heiko last_name: Hamann - first_name: Nikolaus full_name: Correll, Nikolaus last_name: Correll - first_name: Janusz full_name: Kacprzyk, Janusz last_name: Kacprzyk - first_name: Witold full_name: Pedrycz, Witold last_name: Pedrycz citation: ama: 'Hamann H, Correll N, Kacprzyk J, Pedrycz W. Probabilistic Modeling of Swarming Systems. In: Springer Handbook of Computational Intelligence. Springer; 2015:1423-1431. doi:10.1007/978-3-662-43505-2_74' apa: Hamann, H., Correll, N., Kacprzyk, J., & Pedrycz, W. (2015). Probabilistic Modeling of Swarming Systems. In Springer Handbook of Computational Intelligence (pp. 1423–1431). Springer. https://doi.org/10.1007/978-3-662-43505-2_74 bibtex: '@inbook{Hamann_Correll_Kacprzyk_Pedrycz_2015, title={Probabilistic Modeling of Swarming Systems}, DOI={10.1007/978-3-662-43505-2_74}, booktitle={Springer Handbook of Computational Intelligence}, publisher={Springer}, author={Hamann, Heiko and Correll, Nikolaus and Kacprzyk, Janusz and Pedrycz, Witold}, year={2015}, pages={1423–1431} }' chicago: Hamann, Heiko, Nikolaus Correll, Janusz Kacprzyk, and Witold Pedrycz. “Probabilistic Modeling of Swarming Systems.” In Springer Handbook of Computational Intelligence, 1423–31. Springer, 2015. https://doi.org/10.1007/978-3-662-43505-2_74. ieee: H. Hamann, N. Correll, J. Kacprzyk, and W. Pedrycz, “Probabilistic Modeling of Swarming Systems,” in Springer Handbook of Computational Intelligence, Springer, 2015, pp. 1423–1431. mla: Hamann, Heiko, et al. “Probabilistic Modeling of Swarming Systems.” Springer Handbook of Computational Intelligence, Springer, 2015, pp. 1423–31, doi:10.1007/978-3-662-43505-2_74. short: 'H. Hamann, N. Correll, J. Kacprzyk, W. Pedrycz, in: Springer Handbook of Computational Intelligence, Springer, 2015, pp. 1423–1431.' date_created: 2020-10-13T09:04:19Z date_updated: 2022-01-06T06:54:17Z department: - _id: '63' - _id: '238' doi: 10.1007/978-3-662-43505-2_74 language: - iso: eng page: 1423-1431 publication: Springer Handbook of Computational Intelligence publisher: Springer status: public title: Probabilistic Modeling of Swarming Systems type: book_chapter user_id: '15415' year: '2015' ... --- _id: '19990' author: - first_name: Hongli full_name: Ding, Hongli last_name: Ding - first_name: Heiko full_name: Hamann, Heiko last_name: Hamann citation: ama: 'Ding H, Hamann H. Dependability in Swarm Robotics: Error Detection and Correction. In: First International Symposium on Swarm Behavior and Bio-Inspired Robotics (SWARM 2015). ; 2015.' apa: 'Ding, H., & Hamann, H. (2015). Dependability in Swarm Robotics: Error Detection and Correction. In First International Symposium on Swarm Behavior and Bio-Inspired Robotics (SWARM 2015).' bibtex: '@inproceedings{Ding_Hamann_2015, title={Dependability in Swarm Robotics: Error Detection and Correction}, booktitle={First International Symposium on Swarm Behavior and Bio-Inspired Robotics (SWARM 2015)}, author={Ding, Hongli and Hamann, Heiko}, year={2015} }' chicago: 'Ding, Hongli, and Heiko Hamann. “Dependability in Swarm Robotics: Error Detection and Correction.” In First International Symposium on Swarm Behavior and Bio-Inspired Robotics (SWARM 2015), 2015.' ieee: 'H. Ding and H. Hamann, “Dependability in Swarm Robotics: Error Detection and Correction,” in First International Symposium on Swarm Behavior and Bio-Inspired Robotics (SWARM 2015), 2015.' mla: 'Ding, Hongli, and Heiko Hamann. “Dependability in Swarm Robotics: Error Detection and Correction.” First International Symposium on Swarm Behavior and Bio-Inspired Robotics (SWARM 2015), 2015.' short: 'H. Ding, H. Hamann, in: First International Symposium on Swarm Behavior and Bio-Inspired Robotics (SWARM 2015), 2015.' date_created: 2020-10-13T09:09:20Z date_updated: 2022-01-06T06:54:17Z department: - _id: '63' - _id: '238' language: - iso: eng publication: First International Symposium on Swarm Behavior and Bio-Inspired Robotics (SWARM 2015) status: public title: 'Dependability in Swarm Robotics: Error Detection and Correction' type: conference user_id: '15415' year: '2015' ... --- _id: '19991' author: - first_name: Heiko full_name: Hamann, Heiko last_name: Hamann - first_name: Thomas full_name: Schmickl, Thomas last_name: Schmickl - first_name: Daniela full_name: Kengyel, Daniela last_name: Kengyel - first_name: Payam full_name: Zahadat, Payam last_name: Zahadat - first_name: Gerald full_name: Radspieler, Gerald last_name: Radspieler - first_name: Franz full_name: Wotawa, Franz last_name: Wotawa citation: ama: 'Hamann H, Schmickl T, Kengyel D, Zahadat P, Radspieler G, Wotawa F. Potential of Heterogeneity in Collective Behaviors: A Case Study on Heterogeneous Swarms. In: Principles and Practice of Multi-Agent Systems (PRIMA 2015). ; 2015:201-217.' apa: 'Hamann, H., Schmickl, T., Kengyel, D., Zahadat, P., Radspieler, G., & Wotawa, F. (2015). Potential of Heterogeneity in Collective Behaviors: A Case Study on Heterogeneous Swarms. In Principles and Practice of Multi-Agent Systems (PRIMA 2015) (pp. 201–217).' bibtex: '@inproceedings{Hamann_Schmickl_Kengyel_Zahadat_Radspieler_Wotawa_2015, title={Potential of Heterogeneity in Collective Behaviors: A Case Study on Heterogeneous Swarms}, booktitle={Principles and Practice of Multi-Agent Systems (PRIMA 2015)}, author={Hamann, Heiko and Schmickl, Thomas and Kengyel, Daniela and Zahadat, Payam and Radspieler, Gerald and Wotawa, Franz}, year={2015}, pages={201–217} }' chicago: 'Hamann, Heiko, Thomas Schmickl, Daniela Kengyel, Payam Zahadat, Gerald Radspieler, and Franz Wotawa. “Potential of Heterogeneity in Collective Behaviors: A Case Study on Heterogeneous Swarms.” In Principles and Practice of Multi-Agent Systems (PRIMA 2015), 201–17, 2015.' ieee: 'H. Hamann, T. Schmickl, D. Kengyel, P. Zahadat, G. Radspieler, and F. Wotawa, “Potential of Heterogeneity in Collective Behaviors: A Case Study on Heterogeneous Swarms,” in Principles and Practice of Multi-Agent Systems (PRIMA 2015), 2015, pp. 201–217.' mla: 'Hamann, Heiko, et al. “Potential of Heterogeneity in Collective Behaviors: A Case Study on Heterogeneous Swarms.” Principles and Practice of Multi-Agent Systems (PRIMA 2015), 2015, pp. 201–17.' short: 'H. Hamann, T. Schmickl, D. Kengyel, P. Zahadat, G. Radspieler, F. Wotawa, in: Principles and Practice of Multi-Agent Systems (PRIMA 2015), 2015, pp. 201–217.' date_created: 2020-10-13T09:24:32Z date_updated: 2022-01-06T06:54:17Z department: - _id: '63' - _id: '238' language: - iso: eng page: 201-217 publication: Principles and Practice of Multi-Agent Systems (PRIMA 2015) status: public title: 'Potential of Heterogeneity in Collective Behaviors: A Case Study on Heterogeneous Swarms' type: conference user_id: '15415' year: '2015' ... --- _id: '19992' author: - first_name: Gabriele full_name: Valentini, Gabriele last_name: Valentini - first_name: Heiko full_name: Hamann, Heiko last_name: Hamann citation: ama: 'Valentini G, Hamann H. Time-variant feedback processes in collective decision-making systems: influence and effect of dynamic neighborhood sizes. Swarm Intelligence. 2015:153-176. doi:10.1007/s11721-015-0108-8' apa: 'Valentini, G., & Hamann, H. (2015). Time-variant feedback processes in collective decision-making systems: influence and effect of dynamic neighborhood sizes. Swarm Intelligence, 153–176. https://doi.org/10.1007/s11721-015-0108-8' bibtex: '@article{Valentini_Hamann_2015, title={Time-variant feedback processes in collective decision-making systems: influence and effect of dynamic neighborhood sizes}, DOI={10.1007/s11721-015-0108-8}, journal={Swarm Intelligence}, author={Valentini, Gabriele and Hamann, Heiko}, year={2015}, pages={153–176} }' chicago: 'Valentini, Gabriele, and Heiko Hamann. “Time-Variant Feedback Processes in Collective Decision-Making Systems: Influence and Effect of Dynamic Neighborhood Sizes.” Swarm Intelligence, 2015, 153–76. https://doi.org/10.1007/s11721-015-0108-8.' ieee: 'G. Valentini and H. Hamann, “Time-variant feedback processes in collective decision-making systems: influence and effect of dynamic neighborhood sizes,” Swarm Intelligence, pp. 153–176, 2015.' mla: 'Valentini, Gabriele, and Heiko Hamann. “Time-Variant Feedback Processes in Collective Decision-Making Systems: Influence and Effect of Dynamic Neighborhood Sizes.” Swarm Intelligence, 2015, pp. 153–76, doi:10.1007/s11721-015-0108-8.' short: G. Valentini, H. Hamann, Swarm Intelligence (2015) 153–176. date_created: 2020-10-13T09:27:48Z date_updated: 2022-01-06T06:54:17Z department: - _id: '63' - _id: '238' doi: 10.1007/s11721-015-0108-8 language: - iso: eng page: 153-176 publication: Swarm Intelligence publication_identifier: issn: - 1935-3812 - 1935-3820 publication_status: published status: public title: 'Time-variant feedback processes in collective decision-making systems: influence and effect of dynamic neighborhood sizes' type: journal_article user_id: '15415' year: '2015' ... --- _id: '20005' author: - first_name: Marco full_name: Dorigo, Marco last_name: Dorigo - first_name: Heiko full_name: Hamann, Heiko last_name: Hamann - first_name: Gabriele full_name: Valentini, Gabriele last_name: Valentini citation: ama: 'Dorigo M, Hamann H, Valentini G. Efficient Decision-Making in a Self-Organizing Robot Swarm: On the Speed Versus Accuracy Trade-Off. In: Proceedings of the 14th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2015). ; 2015.' apa: 'Dorigo, M., Hamann, H., & Valentini, G. (2015). Efficient Decision-Making in a Self-Organizing Robot Swarm: On the Speed Versus Accuracy Trade-Off. In Proceedings of the 14th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2015).' bibtex: '@inproceedings{Dorigo_Hamann_Valentini_2015, title={Efficient Decision-Making in a Self-Organizing Robot Swarm: On the Speed Versus Accuracy Trade-Off}, booktitle={Proceedings of the 14th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2015)}, author={Dorigo, Marco and Hamann, Heiko and Valentini, Gabriele}, year={2015} }' chicago: 'Dorigo, Marco, Heiko Hamann, and Gabriele Valentini. “Efficient Decision-Making in a Self-Organizing Robot Swarm: On the Speed Versus Accuracy Trade-Off.” In Proceedings of the 14th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2015), 2015.' ieee: 'M. Dorigo, H. Hamann, and G. Valentini, “Efficient Decision-Making in a Self-Organizing Robot Swarm: On the Speed Versus Accuracy Trade-Off,” in Proceedings of the 14th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2015), 2015.' mla: 'Dorigo, Marco, et al. “Efficient Decision-Making in a Self-Organizing Robot Swarm: On the Speed Versus Accuracy Trade-Off.” Proceedings of the 14th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2015), 2015.' short: 'M. Dorigo, H. Hamann, G. Valentini, in: Proceedings of the 14th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2015), 2015.' date_created: 2020-10-15T12:29:26Z date_updated: 2022-01-06T06:54:18Z department: - _id: '63' - _id: '238' language: - iso: eng publication: Proceedings of the 14th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2015) status: public title: 'Efficient Decision-Making in a Self-Organizing Robot Swarm: On the Speed Versus Accuracy Trade-Off' type: conference user_id: '15415' year: '2015' ... --- _id: '20006' author: - first_name: Marco full_name: Dorigo, Marco last_name: Dorigo - first_name: Heiko full_name: Hamann, Heiko last_name: Hamann - first_name: Gabriele full_name: Valentini, Gabriele last_name: Valentini citation: ama: 'Dorigo M, Hamann H, Valentini G. Self-organized collective decisions in a robot swarm. In: AAAI-15 Video Proceedings. ; 2015.' apa: Dorigo, M., Hamann, H., & Valentini, G. (2015). Self-organized collective decisions in a robot swarm. In AAAI-15 Video Proceedings. bibtex: '@inproceedings{Dorigo_Hamann_Valentini_2015, title={Self-organized collective decisions in a robot swarm}, booktitle={AAAI-15 Video Proceedings}, author={Dorigo, Marco and Hamann, Heiko and Valentini, Gabriele}, year={2015} }' chicago: Dorigo, Marco, Heiko Hamann, and Gabriele Valentini. “Self-Organized Collective Decisions in a Robot Swarm.” In AAAI-15 Video Proceedings, 2015. ieee: M. Dorigo, H. Hamann, and G. Valentini, “Self-organized collective decisions in a robot swarm,” in AAAI-15 Video Proceedings, 2015. mla: Dorigo, Marco, et al. “Self-Organized Collective Decisions in a Robot Swarm.” AAAI-15 Video Proceedings, 2015. short: 'M. Dorigo, H. Hamann, G. Valentini, in: AAAI-15 Video Proceedings, 2015.' date_created: 2020-10-15T12:38:13Z date_updated: 2022-01-06T06:54:18Z department: - _id: '63' - _id: '238' language: - iso: eng publication: AAAI-15 Video Proceedings status: public title: Self-organized collective decisions in a robot swarm type: conference user_id: '15415' year: '2015' ... --- _id: '266' abstract: - lang: eng text: 'Many markets have seen a shift from the idea of buying and moved to leasing instead. Arguably, the latter has been the major catalyst for their success. Ten years ago, research realized this shift and initiated the study of "online leasing problems" by introducing leasing to online optimization problems. Resources required to provide a service in an "online leasing problem" are no more bought but leased for different durations. In this paper, we provide an overview of results that contribute to the understanding of "online resource leasing problems". ' author: - first_name: Christine full_name: Markarian, Christine id: '37612' last_name: Markarian - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide citation: ama: 'Markarian C, Meyer auf der Heide F. Online Resource Leasing. In: Proceedings of the 2015 ACM Symposium on Principles of Distributed Computing (PODC). ; 2015:343-344. doi:10.1145/2767386.2767454' apa: Markarian, C., & Meyer auf der Heide, F. (2015). Online Resource Leasing. In Proceedings of the 2015 ACM Symposium on Principles of Distributed Computing (PODC) (pp. 343–344). https://doi.org/10.1145/2767386.2767454 bibtex: '@inproceedings{Markarian_Meyer auf der Heide_2015, title={Online Resource Leasing}, DOI={10.1145/2767386.2767454}, booktitle={Proceedings of the 2015 ACM Symposium on Principles of Distributed Computing (PODC)}, author={Markarian, Christine and Meyer auf der Heide, Friedhelm}, year={2015}, pages={343–344} }' chicago: Markarian, Christine, and Friedhelm Meyer auf der Heide. “Online Resource Leasing.” In Proceedings of the 2015 ACM Symposium on Principles of Distributed Computing (PODC), 343–44, 2015. https://doi.org/10.1145/2767386.2767454. ieee: C. Markarian and F. Meyer auf der Heide, “Online Resource Leasing,” in Proceedings of the 2015 ACM Symposium on Principles of Distributed Computing (PODC), 2015, pp. 343–344. mla: Markarian, Christine, and Friedhelm Meyer auf der Heide. “Online Resource Leasing.” Proceedings of the 2015 ACM Symposium on Principles of Distributed Computing (PODC), 2015, pp. 343–44, doi:10.1145/2767386.2767454. short: 'C. Markarian, F. Meyer auf der Heide, in: Proceedings of the 2015 ACM Symposium on Principles of Distributed Computing (PODC), 2015, pp. 343–344.' date_created: 2017-10-17T12:41:44Z date_updated: 2022-01-06T06:57:22Z ddc: - '040' department: - _id: '63' doi: 10.1145/2767386.2767454 file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-21T09:33:11Z date_updated: 2018-03-21T09:33:11Z file_id: '1478' file_name: 266-p343-markarian.pdf file_size: 679580 relation: main_file success: 1 file_date_updated: 2018-03-21T09:33:11Z has_accepted_license: '1' page: 343-344 project: - _id: '1' name: SFB 901 - _id: '5' name: SFB 901 - Subprojekt A1 - _id: '16' name: SFB 901 - Subprojekt C4 - _id: '2' name: SFB 901 - Project Area A - _id: '4' name: SFB 901 - Project Area C publication: Proceedings of the 2015 ACM Symposium on Principles of Distributed Computing (PODC) status: public title: Online Resource Leasing type: conference user_id: '15504' year: '2015' ... --- _id: '267' author: - first_name: Christine full_name: Markarian, Christine id: '37612' last_name: Markarian citation: ama: Markarian C. Online Resource Leasing. Universität Paderborn; 2015. apa: Markarian, C. (2015). Online Resource Leasing. Universität Paderborn. bibtex: '@book{Markarian_2015, title={Online Resource Leasing}, publisher={Universität Paderborn}, author={Markarian, Christine}, year={2015} }' chicago: Markarian, Christine. Online Resource Leasing. Universität Paderborn, 2015. ieee: C. Markarian, Online Resource Leasing. Universität Paderborn, 2015. mla: Markarian, Christine. Online Resource Leasing. Universität Paderborn, 2015. short: C. Markarian, Online Resource Leasing, Universität Paderborn, 2015. date_created: 2017-10-17T12:41:44Z date_updated: 2022-01-06T06:57:26Z ddc: - '040' department: - _id: '63' file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-21T09:33:41Z date_updated: 2018-03-21T09:33:41Z file_id: '1479' file_name: 267-Dissertation_-_Markarian.pdf file_size: 1328685 relation: main_file success: 1 file_date_updated: 2018-03-21T09:33:41Z has_accepted_license: '1' language: - iso: eng project: - _id: '1' name: SFB 901 - _id: '16' name: SFB 901 - Subprojekt C4 - _id: '4' name: SFB 901 - Project Area C publisher: Universität Paderborn related_material: link: - relation: confirmation url: http://nbn-resolving.de/urn:nbn:de:hbz:466:2-16656 status: public supervisor: - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide title: Online Resource Leasing type: dissertation user_id: '15415' year: '2015' ... --- _id: '320' abstract: - lang: eng text: 'We consider structural and algorithmic questions related to the Nash dynamics of weighted congestion games. In weighted congestion games with linear latency functions, the existence of pure Nash equilibria is guaranteed by a potential function argument. Unfortunately, this proof of existence is inefficient and computing pure Nash equilibria in such games is a PLS-hard problem even when all players have unit weights. The situation gets worse when superlinear (e.g., quadratic) latency functions come into play; in this case, the Nash dynamics of the game may contain cycles and pure Nash equilibria may not even exist. Given these obstacles, we consider approximate pure Nash equilibria as alternative solution concepts. A ρ--approximate pure Nash equilibrium is a state of a (weighted congestion) game from which no player has any incentive to deviate in order to improve her cost by a multiplicative factor higher than ρ. Do such equilibria exist for small values of ρ? And if so, can we compute them efficiently?We provide positive answers to both questions for weighted congestion games with polynomial latency functions by exploiting an “approximation” of such games by a new class of potential games that we call Ψ-games. This allows us to show that these games have d!-approximate pure Nash equilibria, where d is the maximum degree of the latency functions. Our main technical contribution is an efficient algorithm for computing O(1)-approximate pure Nash equilibria when d is a constant. For games with linear latency functions, the approximation guarantee is 3+√5/2 + Oγ for arbitrarily small γ > 0; for latency functions with maximum degree d≥ 2, it is d2d+o(d). The running time is polynomial in the number of bits in the representation of the game and 1/γ. As a byproduct of our techniques, we also show the following interesting structural statement for weighted congestion games with polynomial latency functions of maximum degree d ≥ 2: polynomially-long sequences of best-response moves from any initial state to a dO(d2)-approximate pure Nash equilibrium exist and can be efficiently identified in such games as long as d is a constant.To the best of our knowledge, these are the first positive algorithmic results for approximate pure Nash equilibria in weighted congestion games. Our techniques significantly extend our recent work on unweighted congestion games through the use of Ψ-games. The concept of approximating nonpotential games by potential ones is interesting in itself and might have further applications.' article_number: '2' author: - first_name: Ioannis full_name: Caragiannis, Ioannis last_name: Caragiannis - first_name: Angelo full_name: Fanelli, Angelo last_name: Fanelli - first_name: Nick full_name: Gravin, Nick last_name: Gravin - first_name: Alexander full_name: Skopalik, Alexander id: '40384' last_name: Skopalik citation: ama: 'Caragiannis I, Fanelli A, Gravin N, Skopalik A. Approximate Pure Nash Equilibria in Weighted Congestion Games: Existence, Efficient Computation, and Structure. Transactions on Economics and Computation. 2015;3(1). doi:10.1145/2614687' apa: 'Caragiannis, I., Fanelli, A., Gravin, N., & Skopalik, A. (2015). Approximate Pure Nash Equilibria in Weighted Congestion Games: Existence, Efficient Computation, and Structure. Transactions on Economics and Computation, 3(1). https://doi.org/10.1145/2614687' bibtex: '@article{Caragiannis_Fanelli_Gravin_Skopalik_2015, title={Approximate Pure Nash Equilibria in Weighted Congestion Games: Existence, Efficient Computation, and Structure}, volume={3}, DOI={10.1145/2614687}, number={12}, journal={Transactions on Economics and Computation}, publisher={ACM}, author={Caragiannis, Ioannis and Fanelli, Angelo and Gravin, Nick and Skopalik, Alexander}, year={2015} }' chicago: 'Caragiannis, Ioannis, Angelo Fanelli, Nick Gravin, and Alexander Skopalik. “Approximate Pure Nash Equilibria in Weighted Congestion Games: Existence, Efficient Computation, and Structure.” Transactions on Economics and Computation 3, no. 1 (2015). https://doi.org/10.1145/2614687.' ieee: 'I. Caragiannis, A. Fanelli, N. Gravin, and A. Skopalik, “Approximate Pure Nash Equilibria in Weighted Congestion Games: Existence, Efficient Computation, and Structure,” Transactions on Economics and Computation, vol. 3, no. 1, 2015.' mla: 'Caragiannis, Ioannis, et al. “Approximate Pure Nash Equilibria in Weighted Congestion Games: Existence, Efficient Computation, and Structure.” Transactions on Economics and Computation, vol. 3, no. 1, 2, ACM, 2015, doi:10.1145/2614687.' short: I. Caragiannis, A. Fanelli, N. Gravin, A. Skopalik, Transactions on Economics and Computation 3 (2015). date_created: 2017-10-17T12:41:54Z date_updated: 2022-01-06T06:59:04Z ddc: - '040' department: - _id: '63' - _id: '541' doi: 10.1145/2614687 file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-20T07:40:55Z date_updated: 2018-03-20T07:40:55Z file_id: '1433' file_name: 320-a2-caragiannis.pdf file_size: 260503 relation: main_file success: 1 file_date_updated: 2018-03-20T07:40:55Z has_accepted_license: '1' intvolume: ' 3' issue: '1' language: - iso: eng project: - _id: '1' name: SFB 901 - _id: '7' name: SFB 901 - Subprojekt A3 - _id: '2' name: SFB 901 - Project Area A publication: Transactions on Economics and Computation publisher: ACM status: public title: 'Approximate Pure Nash Equilibria in Weighted Congestion Games: Existence, Efficient Computation, and Structure' type: journal_article user_id: '477' volume: 3 year: '2015' ... --- _id: '316' author: - first_name: Jannis full_name: Pautz, Jannis last_name: Pautz citation: ama: Pautz J. Budget Games with Priced Strategies. Universität Paderborn; 2015. apa: Pautz, J. (2015). Budget Games with priced strategies. Universität Paderborn. bibtex: '@book{Pautz_2015, title={Budget Games with priced strategies}, publisher={Universität Paderborn}, author={Pautz, Jannis}, year={2015} }' chicago: Pautz, Jannis. Budget Games with Priced Strategies. Universität Paderborn, 2015. ieee: J. Pautz, Budget Games with priced strategies. Universität Paderborn, 2015. mla: Pautz, Jannis. Budget Games with Priced Strategies. Universität Paderborn, 2015. short: J. Pautz, Budget Games with Priced Strategies, Universität Paderborn, 2015. date_created: 2017-10-17T12:41:53Z date_updated: 2022-01-06T06:59:01Z department: - _id: '63' - _id: '541' project: - _id: '1' name: SFB 901 - _id: '7' name: SFB 901 - Subprojekt A3 - _id: '2' name: SFB 901 - Project Area A publisher: Universität Paderborn status: public supervisor: - first_name: Alexander full_name: Skopalik, Alexander id: '40384' last_name: Skopalik title: Budget Games with priced strategies type: bachelorsthesis user_id: '14052' year: '2015' ... --- _id: '317' author: - first_name: Claudius full_name: Jähn, Claudius last_name: Jähn citation: ama: Jähn C. Bewertung von Renderingalgorithmen für komplexe 3-D-Szenen. Universität Paderborn; 2015. apa: Jähn, C. (2015). Bewertung von Renderingalgorithmen für komplexe 3-D-Szenen. Universität Paderborn. bibtex: '@book{Jähn_2015, title={Bewertung von Renderingalgorithmen für komplexe 3-D-Szenen}, publisher={Universität Paderborn}, author={Jähn, Claudius}, year={2015} }' chicago: Jähn, Claudius. Bewertung von Renderingalgorithmen für komplexe 3-D-Szenen. Universität Paderborn, 2015. ieee: C. Jähn, Bewertung von Renderingalgorithmen für komplexe 3-D-Szenen. Universität Paderborn, 2015. mla: Jähn, Claudius. Bewertung von Renderingalgorithmen für komplexe 3-D-Szenen. Universität Paderborn, 2015. short: C. Jähn, Bewertung von Renderingalgorithmen für komplexe 3-D-Szenen, Universität Paderborn, 2015. date_created: 2017-10-17T12:41:53Z date_updated: 2022-01-06T06:59:02Z ddc: - '040' department: - _id: '63' file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-21T09:20:34Z date_updated: 2018-03-21T09:20:34Z file_id: '1462' file_name: 317-Dissertation_ClaudiusJaehn.pdf file_size: 20442332 relation: main_file success: 1 file_date_updated: 2018-03-21T09:20:34Z has_accepted_license: '1' language: - iso: ger publisher: Universität Paderborn status: public supervisor: - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide title: Bewertung von Renderingalgorithmen für komplexe 3-D-Szenen type: dissertation user_id: '14052' year: '2015' ... --- _id: '270' author: - first_name: Sebastian full_name: Abshoff, Sebastian last_name: Abshoff citation: ama: Abshoff S. On the Complexity of Fundamental Problems in Dynamic Ad-Hoc Networks. Universität Paderborn; 2015. apa: Abshoff, S. (2015). On the Complexity of Fundamental Problems in Dynamic Ad-hoc Networks. Universität Paderborn. bibtex: '@book{Abshoff_2015, title={On the Complexity of Fundamental Problems in Dynamic Ad-hoc Networks}, publisher={Universität Paderborn}, author={Abshoff, Sebastian}, year={2015} }' chicago: Abshoff, Sebastian. On the Complexity of Fundamental Problems in Dynamic Ad-Hoc Networks. Universität Paderborn, 2015. ieee: S. Abshoff, On the Complexity of Fundamental Problems in Dynamic Ad-hoc Networks. Universität Paderborn, 2015. mla: Abshoff, Sebastian. On the Complexity of Fundamental Problems in Dynamic Ad-Hoc Networks. Universität Paderborn, 2015. short: S. Abshoff, On the Complexity of Fundamental Problems in Dynamic Ad-Hoc Networks, Universität Paderborn, 2015. date_created: 2017-10-17T12:41:44Z date_updated: 2022-01-06T06:57:32Z ddc: - '040' department: - _id: '63' file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-21T09:30:02Z date_updated: 2018-03-21T09:30:02Z file_id: '1476' file_name: 270-Dissertation_-_Abshoff.pdf file_size: 448614 relation: main_file success: 1 file_date_updated: 2018-03-21T09:30:02Z has_accepted_license: '1' project: - _id: '1' name: SFB 901 - _id: '5' name: SFB 901 - Subprojekt A1 - _id: '2' name: SFB 901 - Project Area A publisher: Universität Paderborn status: public supervisor: - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide title: On the Complexity of Fundamental Problems in Dynamic Ad-hoc Networks type: dissertation user_id: '477' year: '2015' ... --- _id: '271' abstract: - lang: eng text: In \emph{bandwidth allocation games} (BAGs), the strategy of a player consists of various demands on different resources. The player's utility is at most the sum of these demands, provided they are fully satisfied. Every resource has a limited capacity and if it is exceeded by the total demand, it has to be split between the players. Since these games generally do not have pure Nash equilibria, we consider approximate pure Nash equilibria, in which no player can improve her utility by more than some fixed factor $\alpha$ through unilateral strategy changes. There is a threshold $\alpha_\delta$ (where $\delta$ is a parameter that limits the demand of each player on a specific resource) such that $\alpha$-approximate pure Nash equilibria always exist for $\alpha \geq \alpha_\delta$, but not for $\alpha < \alpha_\delta$. We give both upper and lower bounds on this threshold $\alpha_\delta$ and show that the corresponding decision problem is ${\sf NP}$-hard. We also show that the $\alpha$-approximate price of anarchy for BAGs is $\alpha+1$. For a restricted version of the game, where demands of players only differ slightly from each other (e.g. symmetric games), we show that approximate Nash equilibria can be reached (and thus also be computed) in polynomial time using the best-response dynamic. Finally, we show that a broader class of utility-maximization games (which includes BAGs) converges quickly towards states whose social welfare is close to the optimum. author: - first_name: Maximilian full_name: Drees, Maximilian last_name: Drees - first_name: Matthias full_name: Feldotto, Matthias id: '14052' last_name: Feldotto orcid: 0000-0003-1348-6516 - first_name: Sören full_name: Riechers, Sören last_name: Riechers - first_name: Alexander full_name: Skopalik, Alexander id: '40384' last_name: Skopalik citation: ama: 'Drees M, Feldotto M, Riechers S, Skopalik A. On Existence and Properties of Approximate Pure Nash Equilibria in Bandwidth Allocation Games. In: Proceedings of the 8th International Symposium on Algorithmic Game Theory (SAGT). Lecture Notes in Computer Science. ; 2015:178-189. doi:10.1007/978-3-662-48433-3_14' apa: Drees, M., Feldotto, M., Riechers, S., & Skopalik, A. (2015). On Existence and Properties of Approximate Pure Nash Equilibria in Bandwidth Allocation Games. In Proceedings of the 8th International Symposium on Algorithmic Game Theory (SAGT) (pp. 178–189). https://doi.org/10.1007/978-3-662-48433-3_14 bibtex: '@inproceedings{Drees_Feldotto_Riechers_Skopalik_2015, series={Lecture Notes in Computer Science}, title={On Existence and Properties of Approximate Pure Nash Equilibria in Bandwidth Allocation Games}, DOI={10.1007/978-3-662-48433-3_14}, booktitle={Proceedings of the 8th International Symposium on Algorithmic Game Theory (SAGT)}, author={Drees, Maximilian and Feldotto, Matthias and Riechers, Sören and Skopalik, Alexander}, year={2015}, pages={178–189}, collection={Lecture Notes in Computer Science} }' chicago: Drees, Maximilian, Matthias Feldotto, Sören Riechers, and Alexander Skopalik. “On Existence and Properties of Approximate Pure Nash Equilibria in Bandwidth Allocation Games.” In Proceedings of the 8th International Symposium on Algorithmic Game Theory (SAGT), 178–89. Lecture Notes in Computer Science, 2015. https://doi.org/10.1007/978-3-662-48433-3_14. ieee: M. Drees, M. Feldotto, S. Riechers, and A. Skopalik, “On Existence and Properties of Approximate Pure Nash Equilibria in Bandwidth Allocation Games,” in Proceedings of the 8th International Symposium on Algorithmic Game Theory (SAGT), 2015, pp. 178–189. mla: Drees, Maximilian, et al. “On Existence and Properties of Approximate Pure Nash Equilibria in Bandwidth Allocation Games.” Proceedings of the 8th International Symposium on Algorithmic Game Theory (SAGT), 2015, pp. 178–89, doi:10.1007/978-3-662-48433-3_14. short: 'M. Drees, M. Feldotto, S. Riechers, A. Skopalik, in: Proceedings of the 8th International Symposium on Algorithmic Game Theory (SAGT), 2015, pp. 178–189.' date_created: 2017-10-17T12:41:45Z date_updated: 2022-01-06T06:57:34Z ddc: - '040' department: - _id: '63' - _id: '541' doi: 10.1007/978-3-662-48433-3_14 external_id: arxiv: - '1507.02908' file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-21T09:29:34Z date_updated: 2018-03-21T09:29:34Z file_id: '1475' file_name: 271-chp_3A10.1007_2F978-3-662-48433-3_14.pdf file_size: 256718 relation: main_file success: 1 file_date_updated: 2018-03-21T09:29:34Z has_accepted_license: '1' page: 178-189 project: - _id: '1' name: SFB 901 - _id: '7' name: SFB 901 - Subprojekt A3 - _id: '16' name: SFB 901 - Subproject C4 - _id: '2' name: SFB 901 - Project Area A - _id: '4' name: SFB 901 - Project Area C publication: Proceedings of the 8th International Symposium on Algorithmic Game Theory (SAGT) series_title: Lecture Notes in Computer Science status: public title: On Existence and Properties of Approximate Pure Nash Equilibria in Bandwidth Allocation Games type: conference user_id: '14052' year: '2015' ... --- _id: '274' abstract: - lang: eng text: Consider the problem in which n jobs that are classified into k types are to be scheduled on m identical machines without preemption. A machine requires a proper setup taking s time units before processing jobs of a given type. The objective is to minimize the makespan of the resulting schedule. We design and analyze an approximation algorithm that runs in time polynomial in n,m and k and computes a solution with an approximation factor that can be made arbitrarily close to 3/2. author: - first_name: Alexander full_name: Mäcker, Alexander id: '13536' last_name: Mäcker - first_name: Manuel full_name: Malatyali, Manuel last_name: Malatyali - first_name: Friedhelm full_name: Meyer auf der Heide, Friedhelm id: '15523' last_name: Meyer auf der Heide - first_name: Sören full_name: Riechers, Sören last_name: Riechers citation: ama: 'Mäcker A, Malatyali M, Meyer auf der Heide F, Riechers S. Non-preemptive Scheduling on Machines with Setup Times. In: Dehne F, Sack JR, Stege U, eds. Algorithms and Data Structures: 14th International Symposium, WADS 2015, Victoria, BC, Canada, August 5-7, 2015. Proceedings. Lecture Notes in Computer Science. ; 2015:542--553. doi:10.1007/978-3-319-21840-3_45' apa: 'Mäcker, A., Malatyali, M., Meyer auf der Heide, F., & Riechers, S. (2015). Non-preemptive Scheduling on Machines with Setup Times. In F. Dehne, J. R. Sack, & U. Stege (Eds.), Algorithms and Data Structures: 14th International Symposium, WADS 2015, Victoria, BC, Canada, August 5-7, 2015. Proceedings (pp. 542--553). https://doi.org/10.1007/978-3-319-21840-3_45' bibtex: '@inproceedings{Mäcker_Malatyali_Meyer auf der Heide_Riechers_2015, series={Lecture Notes in Computer Science}, title={Non-preemptive Scheduling on Machines with Setup Times}, DOI={10.1007/978-3-319-21840-3_45}, booktitle={Algorithms and Data Structures: 14th International Symposium, WADS 2015, Victoria, BC, Canada, August 5-7, 2015. Proceedings}, author={Mäcker, Alexander and Malatyali, Manuel and Meyer auf der Heide, Friedhelm and Riechers, Sören}, editor={Dehne, Frank and Sack, Jörg Rüdiger and Stege, UlrikeEditors}, year={2015}, pages={542--553}, collection={Lecture Notes in Computer Science} }' chicago: 'Mäcker, Alexander, Manuel Malatyali, Friedhelm Meyer auf der Heide, and Sören Riechers. “Non-Preemptive Scheduling on Machines with Setup Times.” In Algorithms and Data Structures: 14th International Symposium, WADS 2015, Victoria, BC, Canada, August 5-7, 2015. Proceedings, edited by Frank Dehne, Jörg Rüdiger Sack, and Ulrike Stege, 542--553. Lecture Notes in Computer Science, 2015. https://doi.org/10.1007/978-3-319-21840-3_45.' ieee: 'A. Mäcker, M. Malatyali, F. Meyer auf der Heide, and S. Riechers, “Non-preemptive Scheduling on Machines with Setup Times,” in Algorithms and Data Structures: 14th International Symposium, WADS 2015, Victoria, BC, Canada, August 5-7, 2015. Proceedings, 2015, pp. 542--553.' mla: 'Mäcker, Alexander, et al. “Non-Preemptive Scheduling on Machines with Setup Times.” Algorithms and Data Structures: 14th International Symposium, WADS 2015, Victoria, BC, Canada, August 5-7, 2015. Proceedings, edited by Frank Dehne et al., 2015, pp. 542--553, doi:10.1007/978-3-319-21840-3_45.' short: 'A. Mäcker, M. Malatyali, F. Meyer auf der Heide, S. Riechers, in: F. Dehne, J.R. Sack, U. Stege (Eds.), Algorithms and Data Structures: 14th International Symposium, WADS 2015, Victoria, BC, Canada, August 5-7, 2015. Proceedings, 2015, pp. 542--553.' date_created: 2017-10-17T12:41:45Z date_updated: 2022-01-06T06:57:39Z ddc: - '040' department: - _id: '63' doi: 10.1007/978-3-319-21840-3_45 editor: - first_name: Frank full_name: Dehne, Frank last_name: Dehne - first_name: Jörg Rüdiger full_name: Sack, Jörg Rüdiger last_name: Sack - first_name: Ulrike full_name: Stege, Ulrike last_name: Stege file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-21T09:28:34Z date_updated: 2018-03-21T09:28:34Z file_id: '1473' file_name: 274-chp_3A10.1007_2F978-3-319-21840-3_45.pdf file_size: 215498 relation: main_file success: 1 file_date_updated: 2018-03-21T09:28:34Z has_accepted_license: '1' page: 542--553 project: - _id: '1' name: SFB 901 - _id: '16' name: SFB 901 - Subprojekt C4 - _id: '4' name: SFB 901 - Project Area C publication: 'Algorithms and Data Structures: 14th International Symposium, WADS 2015, Victoria, BC, Canada, August 5-7, 2015. Proceedings' series_title: Lecture Notes in Computer Science status: public title: Non-preemptive Scheduling on Machines with Setup Times type: conference user_id: '15504' year: '2015' ...