Content available in repository
Content available in repository
Personal profile
Research profile
Christopher Hojny is an assistant professor working at TU/e since October 2019. His main research topic is the development of efficient techniques to handle symmetries in mixed-integer programs. Besides symmetry handling, he is also interested in theoretical properties of integer programs (e.g., the existence of formulations with certain properties) and developing integer programming approaches to solve combinatorial optimization problems. Christopher is also a co-developer of the academic solver SCIP.
Network
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
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Mixed-integer programming techniques for the minimum sum-of-squares clustering problem
Burgard, J. P., Moreira Costa, C., Hojny, C., Kleinert, T. & Schmidt, M., 10 Jan 2023, (E-pub ahead of print) In: Journal of Global Optimization. XX, X, 57 p.Research output: Contribution to journal › Article › Academic › peer-review
Open Access -
A Simple Method for Convex Optimization in the Oracle Model
Dadush, D., Hojny, C., Huiberts, S. & Weltge, S., 2022, Integer Programming and Combinatorial Optimization - 23rd International Conference, IPCO 2022, Proceedings: 23rd International Conference, IPCO 2022 Eindhoven, The Netherlands, June 27-29,2022 Proceedings. Aardal, K. & Sanità, L. (eds.). p. 154-167 14 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 13265 LNCS).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review
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Characterizing and computing weight-equitable partitions of graphs
Abiad Monge, A., Hojny, C. & Zeijlemaker, S., 15 Jul 2022, In: Linear Algebra and Its Applications. 645, p. 30-51 22 p.Research output: Contribution to journal › Article › Academic › peer-review
Open AccessFile19 Downloads (Pure) -
Integer Programming Formulations for Compact Single Round Robin Tournaments
van Doornmalen, M. J., Spieksma, F. C. R., Hojny, C. & Lambers, R., 2022, Proceedings of the 13th International Conference on the Practice and Theory of Automated Timetabling - PATAT 2022.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review
Open Access -
A Hybrid Model to Find Schedules for Double Round Robin Tournaments With Side Constraints
van Doornmalen, M. J., Hojny, C., Lambers, R. & Spieksma, F. C. R., 2021, Proceedings of the 13th International Conference on the Practice and Theory of Automated Timetabling - PATAT 2021. de Causmaecker, P., Özcan, E. & Vanden Berghe, G. (eds.). p. 412-419Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review
Open Access
Datasets
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The SCIP Optimization Suite 8.0.0
Bestuzheva, K. (Creator), Besançon, M. (Creator), Chen, W. (Creator), Chimela, A. (Creator), Donkiewicz, T. (Creator), van Doornmalen, M. J. (Creator), Eifler, L. (Creator), Gaul, O. (Creator), Gamrath, G. (Creator), Gleixner, A. (Creator), Gottwald, L. (Creator), Graczyk, C. (Creator), Halbig, K. (Creator), Hendel, G. (Creator), Hoen, A. (Creator), Hojny, C. (Creator), van der Hulst, R. (Creator), Koch, T. (Creator), Lübbecke, M. (Creator), Maher, S. J. (Creator), Matter, F. (Creator), Mühmer, E. (Creator), Müller, B. (Creator), Pfetsch, M. E. (Creator), Rehfeldt, D. (Creator), Schlein, S. (Creator), Schlösser, F. (Creator), Serrano, F. (Creator), Shinano, Y. (Creator), Sofranac, B. (Creator), Turner, M. (Creator), Vigerske, S. (Creator), Wegscheider, F. (Creator), Wellner, P. (Creator), Weninger, D. (Creator) & Witzig, J. (Creator), Zenodo, 5 Apr 2022
Dataset
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scipopt/scip: v8.0.0
Bestuzheva, K. (Creator), Besançon, M. (Creator), Chen, W. (Creator), Chimela, A. (Creator), Donkiewicz, T. (Creator), van Doornmalen, M. J. (Creator), Eifler, L. (Creator), Gaul, O. (Creator), Gottwald, L. (Creator), Graczyk, C. (Creator), Halbig, K. (Creator), Hoen, A. (Creator), Hojny, C. (Creator), van der Hulst, R. (Creator), Koch, T. (Creator), Lübbecke, M. (Creator), Maher, S. J. (Creator), Matter, F. (Creator), Mühmer, E. (Creator), Müller, B. (Creator), Pfetsch, M. E. (Creator), Rehfeldt, D. (Creator), Schlein, S. (Creator), Schlösser, F. (Creator), Serrano, F. (Creator), Shinano, Y. (Creator), Sofranac, B. (Creator), Turner, M. (Creator), Vigerske, S. (Creator), Wegscheider, F. (Creator), Wellner, P. (Creator), Weninger, D. (Creator) & Witzig, J. (Creator), Zenodo, 5 Apr 2022
Dataset
Prizes
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Preis für hervorragende wissenschaftliche Leistungen
Hojny, Christopher (Recipient), 2019
Prize: Other › Career, activity or publication related prizes (lifetime, best paper, poster etc.) › Scientific
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A Unified Framework for Symmetry Handling
Christopher Hojny (Speaker)
10 Jan 2023Activity: Talk or presentation types › Contributed talk › Scientific
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The role of rationality in integer programming formulations
Christopher Hojny (Speaker)
18 Nov 2022Activity: Talk or presentation types › Invited talk › Scientific
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The role of rationality in integer programming relaxations
Christopher Hojny (Speaker)
10 Nov 2022Activity: Talk or presentation types › Invited talk › Scientific
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Handling Symmetries in SCIP - An Overview
Christopher Hojny (Speaker)
4 Nov 2022Activity: Talk or presentation types › Contributed talk › Scientific
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Mixed-Integer Programming Techniques for the Minimum Sum-of-squares Clustering Problem
Christopher Hojny (Speaker)
17 Oct 2022Activity: Talk or presentation types › Invited talk › Scientific