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Ksenia Bestuzheva
I work on creating new techniques to efficiently solve mixed-integer nonlinear programs to global optimality. I develop relaxations and cutting planes for convex and nonconvex MINLPs, more specifically problems involving bilinear products, on/off constraints and polynomials. Furthermore, I am interested in generalized convexity and its applications to global optimization. My research is closely linked to the development of the solver SCIP.
📬 Contact
- office
- Room 3102 at ZIB
- bestuzheva (at) zib.de
- homepage
- kbestuzheva.github.io
- languages
- Russian and English
🎓 Curriculum vitae
- 2018 to 2025
- Researcher at ZIB
- Jul 2019
- Ph.D. in Computer Science at ANU
- Jun 2014
- Diploma in Applied Mathematics and Computer Science at State University of Management
đź“ť Publications and preprints
Preprints
- Mexi, G., Kamp, D., Shinano, Y., Pu, S., Hoen, A., Bestuzheva, K., Hojny, C., Walter, M., Pfetsch, M., Pokutta, S., and Koch, T. (2025). State-of-the-art Methods for Pseudo-Boolean Solving with SCIP.
[arXiv]
[BibTeX]
@misc{2025_MexiEtAl_Pseudobooleanscip, archiveprefix = {arXiv}, eprint = {2501.03390}, primaryclass = {math.OC}, year = {2025}, author = {Mexi, Gioni and Kamp, Dominik and Shinano, Yuji and Pu, Shanwen and Hoen, Alexander and Bestuzheva, Ksenia and Hojny, Christopher and Walter, Matthias and Pfetsch, Marc and Pokutta, Sebastian and Koch, Thorsten}, title = {State-of-the-art Methods for Pseudo-Boolean Solving with SCIP}, date = {2025-01-06} }
- Xu, L., Mexi, G., and Bestuzheva, K. (2025). Sparsity-driven Aggregation of Mixed Integer Programs.
[arXiv]
[BibTeX]
@misc{2025_XuMexiBestuzheva_Sparsityaggregationmip, archiveprefix = {arXiv}, eprint = {2502.01192}, primaryclass = {math.OC}, year = {2025}, author = {Xu, Liding and Mexi, Gioni and Bestuzheva, Ksenia}, title = {Sparsity-driven Aggregation of Mixed Integer Programs}, date = {2025-02-03} }
- Bolusani, S., Besançon, M., Bestuzheva, K., Chmiela, A., DionĂsio, J., Donkiewicz, T., van Doornmalen, J., Eifler, L., Ghannam, M., Gleixner, A., Graczyk, C., Halbig, K., Hedtke, I., Hoen, A., Hojny, C., van der Hulst, R., Kamp, D., Koch, T., Kofler, K., … Xu, L. (2024). The SCIP Optimization Suite 9.0 (ZIB Report No. 24-02-29). Zuse Institute Berlin.
[URL]
[arXiv]
[code]
[BibTeX]
@techreport{2024_BolusaniEtAl_Scip9, year = {2024}, institution = {Zuse Institute Berlin}, type = {ZIB Report}, month = feb, number = {24-02-29}, url = {https://nbn-resolving.org/urn:nbn:de:0297-zib-95528}, archiveprefix = {arXiv}, eprint = {2402.17702}, primaryclass = {math.OC}, author = {Bolusani, Suresh and Besançon, Mathieu and Bestuzheva, Ksenia and Chmiela, Antonia and DionĂsio, JoĂŁo and Donkiewicz, Tim and van Doornmalen, Jasper and Eifler, Leon and Ghannam, Mohammed and Gleixner, Ambros and Graczyk, Christoph and Halbig, Katrin and Hedtke, Ivo and Hoen, Alexander and Hojny, Christopher and van der Hulst, Rolf and Kamp, Dominik and Koch, Thorsten and Kofler, Kevin and Lentz, Jurgen and Manns, Julian and Mexi, Gioni and MĂĽhmer, Erik and Pfetsch, Marc and Schlösser, Franziska and Serrano, Felipe and Shinano, Yuji and Turner, Mark and Vigerske, Stefan and Weninger, Dieter and Xu, Liding}, title = {The SCIP Optimization Suite 9.0}, code = {https://scipopt.org}, date = {2024-02-27} }
- Bestuzheva, K., Besançon, M., Chen, W.-K., Chmiela, A., Donkiewicz, T., van Doornmalen, J., Eifler, L., Gaul, O., Gamrath, G., Gleixner, A., Gottwald, L., Graczyk, C., Halbig, K., Hoen, A., Hojny, C., van der Hulst, R., Koch, T., Lübbecke, M., Maher, S. J., … Witzig, J. (2021). The SCIP Optimization Suite 8.0 (ZIB Report No. 21-41). Zuse Institute Berlin.
[URL]
[arXiv]
[code]
[BibTeX]
@techreport{2021_BestuzhevaEtAl_Scip8, year = {2021}, institution = {Zuse Institute Berlin}, type = {ZIB Report}, month = dec, number = {21-41}, url = {https://nbn-resolving.org/urn:nbn:de:0297-zib-85309}, archiveprefix = {arXiv}, eprint = {2112.08872}, primaryclass = {math.OC}, author = {Bestuzheva, Ksenia and Besançon, Mathieu and Chen, Wei-Kun and Chmiela, Antonia and Donkiewicz, Tim and van Doornmalen, Jasper and Eifler, Leon and Gaul, Oliver and Gamrath, Gerald and Gleixner, Ambros and Gottwald, Leona and Graczyk, Christoph and Halbig, Katrin and Hoen, Alexander and Hojny, Christopher and van der Hulst, Rolf and Koch, Thorsten and Lübbecke, Marco and Maher, Stephen J. and Matter, Frederic and Mühmer, Erik and Müller, Benjamin and Pfetsch, Marc and Rehfeld, Daniel and Schlein, Steffan and Schlösser, Franziska and Serrano, Felipe and Shinano, Yuji and Sofranac, Boro and Turner, Mark and Vigerske, Stefan and Wegscheider, Fabian and Wellner, Philipp and Weninger, Dieter and Witzig, Jakob}, title = {The SCIP Optimization Suite 8.0}, code = {https://scipopt.org}, date = {2021-12-16} }
Conference proceedings
- Bestuzheva, K., Gleixner, A., and Achterberg, T. (2023). Efficient Separation of RLT Cuts for Implicit and Explicit Bilinear Terms. Proceedings of the Conference on Integer Programming and Combinatorial Optimization, 14–28.
DOI: 10.1007/978-3-031-32726-1_2
[arXiv]
[BibTeX]
@inproceedings{2022_BestuzhevaGleixnerAchterberg_Rltcutsbilinear:1, year = {2023}, date = {2023-05-22}, booktitle = {Proceedings of the Conference on Integer Programming and Combinatorial Optimization}, pages = {14-28}, doi = {10.1007/978-3-031-32726-1_2}, archiveprefix = {arXiv}, eprint = {2211.13545}, primaryclass = {math.OC}, author = {Bestuzheva, Ksenia and Gleixner, Ambros and Achterberg, Tobias}, title = {Efficient Separation of RLT Cuts for Implicit and Explicit Bilinear Terms} }
- Bestuzheva, K., Gleixner, A., and Völker, H. (2023). Strengthening SONC Relaxations with Constraints Derived From Variable Bounds. Proceedings of the Hungarian Global Optimization Workshop HUGO, 41–44.
[URL]
[arXiv]
[BibTeX]
@inproceedings{2023_BestuzhevaGleixnerVlker_Soncconstraints, year = {2022}, booktitle = {Proceedings of the Hungarian Global Optimization Workshop HUGO}, pages = {41-44}, url = {https://inf.u-szeged.hu/hugo/}, archiveprefix = {arXiv}, eprint = {2304.12145}, primaryclass = {math.OC}, author = {Bestuzheva, Ksenia and Gleixner, Ambros and Völker, Helena}, title = {Strengthening SONC Relaxations with Constraints Derived From Variable Bounds}, date = {2023-04-24} }
Full articles
- Bestuzheva, K., Gleixner, A., and Achterberg, T. (2022). Efficient Separation of RLT Cuts for Implicit and Explicit Bilinear Terms. Mathematical Programming.
DOI: https://doi.org/10.1007/s10107-024-02104-0
[arXiv]
[BibTeX]
@article{2022_BestuzhevaGleixnerAchterberg_Rltcutsbilinear, year = {2024}, journal = {Mathematical Programming}, doi = {https://doi.org/10.1007/s10107-024-02104-0}, archiveprefix = {arXiv}, eprint = {2211.13545}, primaryclass = {math.OC}, author = {Bestuzheva, Ksenia and Gleixner, Ambros and Achterberg, Tobias}, title = {Efficient Separation of RLT Cuts for Implicit and Explicit Bilinear Terms}, date = {2022-11-24} }
- Bestuzheva, K., Gleixner, A., and Vigerske, S. (2023). A Computational Study of Perspective Cuts. Mathematical Programming Computation, 15, 703–731.
DOI: 10.1007/s12532-023-00246-4
[URL]
[arXiv]
[BibTeX]
@article{2021_BestuzhevaGleixnerVigerske_Perspectivecuts, year = {2023}, journal = {Mathematical Programming Computation}, date = {2023-08-21}, volume = {15}, pages = {703-731}, doi = {10.1007/s12532-023-00246-4}, note = {ZIB report 21-07}, url = {https://nbn-resolving.org/urn:nbn:de:0297-zib-81821}, archiveprefix = {arXiv}, eprint = {2103.09573}, primaryclass = {math.OC}, author = {Bestuzheva, Ksenia and Gleixner, Ambros and Vigerske, Stefan}, title = {A Computational Study of Perspective Cuts} }
- Bestuzheva, K., Chmiela, A., MĂĽller, B., Serrano, F., Vigerske, S., and Wegscheider, F. (2023). Global Optimization of Mixed-integer Nonlinear Programs with SCIP 8.0. Journal of Global Optimization.
DOI: 10.1007/s10898-023-01345-1
[URL]
[arXiv]
[BibTeX]
@article{2023_BestuzhevaEtAl_GlobaloptimizationScip80, year = {2023}, journal = {Journal of Global Optimization}, doi = {10.1007/s10898-023-01345-1}, note = {ZIB report 23-01}, url = {https://nbn-resolving.org/urn:nbn:de:0297-zib-89348}, archiveprefix = {arXiv}, eprint = {2301.00587}, primaryclass = {math.OC}, author = {Bestuzheva, Ksenia and Chmiela, Antonia and MĂĽller, Benjamin and Serrano, Felipe and Vigerske, Stefan and Wegscheider, Fabian}, title = {Global Optimization of Mixed-integer Nonlinear Programs with SCIP 8.0}, date = {2023-01-02} }
- Bestuzheva, K., Besançon, M., Chen, W.-K., Chmiela, A., Donkiewicz, T., van Doornmalen, J., Eifler, L., Gaul, O., Gamrath, G., Gleixner, A., Gottwald, L., Graczyk, C., Halbig, K., Hoen, A., Hojny, C., van der Hulst, R., Koch, T., Lübbecke, M., Maher, S. J., … Witzig, J. (2023). Enabling Research Through the SCIP Optimization Suite 8.0. ACM Transactions on Mathematical Software.
DOI: 10.1145/3585516
[arXiv]
[BibTeX]
@article{2023_BestuzhevaEtAl_ResearchScip, year = {2023}, journal = {ACM Transactions on Mathematical Software}, date = {2023-03-10}, doi = {10.1145/3585516}, archiveprefix = {arXiv}, eprint = {2303.07101}, primaryclass = {math.OC}, author = {Bestuzheva, Ksenia and Besançon, Mathieu and Chen, Wei-Kun and Chmiela, Antonia and Donkiewicz, Tim and van Doornmalen, Jasper and Eifler, Leon and Gaul, Oliver and Gamrath, Gerald and Gleixner, Ambros and Gottwald, Leona and Graczyk, Christoph and Halbig, Katrin and Hoen, Alexander and Hojny, Christopher and van der Hulst, Rolf and Koch, Thorsten and Lübbecke, Marco and Maher, Stephen J. and Matter, Frederic and Mühmer, Erik and Müller, Benjamin and Pfetsch, Marc and Rehfeld, Daniel and Schlein, Steffan and Schlösser, Franziska and Serrano, Felipe and Shinano, Yuji and Sofranac, Boro and Turner, Mark and Vigerske, Stefan and Wegscheider, Fabian and Wellner, Philipp and Weninger, Dieter and Witzig, Jakob}, title = {Enabling Research Through the SCIP Optimization Suite 8.0} }
- Ramin, E., Bestuzheva, K., Gargalo, C., Ramin, D., Schneider, C., Ramin, P., Flores-Alsina, X., Andersen, M., and Gernaey, K. (2021). Incremental Design of Water Symbiosis Networks with Prior Knowledge: the Case of an Industrial Park in Kenya. Science of the Total Environment, 751.
DOI: 10.1016/j.scitotenv.2020.141706
[BibTeX]
@article{2021_RaminEtAl_Incrementalwatersymbiosis, year = {2021}, journal = {Science of the Total Environment}, date = {2021-01-10}, volume = {751}, doi = {10.1016/j.scitotenv.2020.141706}, author = {Ramin, Elham and Bestuzheva, Ksenia and Gargalo, Carina and Ramin, Danial and Schneider, Carina and Ramin, Pedram and Flores-Alsina, Xavier and Andersen, Maj and Gernaey, Krist}, title = {Incremental Design of Water Symbiosis Networks with Prior Knowledge: the Case of an Industrial Park in Kenya} }
🔬 Projects
SynLab researches mathematical generalization of application-specific advances achieved in the Gas-, Rail– and MedLab of the research campus MODAL. The focus is on exact methods for solving a broad class of discrete-continuous optimization problems. This requires advanced techniques for structure recognition, consideration of nonlinear restrictions from practice, and the efficient implementation of mathematical algorithms on modern computer architectures. The results are bundled in a professional software package and complemented by a range of high-performance methods for specific applications with a high degree of innovation.
đź’¬ Talks and posters
Conference and workshop talks
- Sep 2024
- What Is New in the SCIP Optimization Suite 9.0
OR Conference, Munich - Jul 2024
- Generalized Convexity Applied to Branch-and-Bound Algorithms for MINLPs
33rd European Conference on Operational Research (EURO), Copenhagen - Sep 2023
- SCIP Beyond 8.0
7th ZIB-IMI-ISM-NUS-RIKEN-MODAL Workshop, Berlin [PDF] - Sep 2023
- Product and Factor Filtering for RLT for Bilinear and Mixed-Integer Problems
OR Conference, Hamburg [PDF] - Jun 2023
- Efficient Separation of RLT Cuts for Implicit and Explicit Bilinear Products
24th IPCO Conference, Madison [PDF] - May 2023
- Perspective Cuts for Generalized On/Off Constraints
20th Mixed Integer Programming European Workshop (MIP) [PDF] - Jan 2023
- Tighter SONC Bounds for Polynomial Optimization Problems with Bounded Variable Domains
Combinatorial Optimization Workshop (Aussois), Aussois [PDF] - Nov 2022
- Strengthening Dual Bounds in Branch-and-Bound by SONC Certificates
Let's SCIP it! (SCIP), Berlin [PDF] - Sep 2022
- Strengthening SONC Relaxations with Constraints Derived From Variable Bounds
HUGO 2022 – XV. Workshop on Global Optimization (HUGO 2022), Szeged [PDF] - Jul 2022
- New Developments in the SCIP Optimization Suite 8
32nd European Conference on Operational Research (EURO), Espoo [PDF] - Sep 2021
- Recent Developments in SCIP
5th ZIB-IMI-ISM-NUS-RIKEN-MODAL Workshop, Berlin [PDF] - Aug 2021
- Solving MINLPs with SCIP
22nd IFORS Conference [PDF] - Jul 2021
- A Computational Study Of Perspective Cuts
31st European Conference on Operational Research (EURO), Athens [PDF] - Jun 2021
- Reformulation-Linearisation Technique for Implicit Bilinear Relations
Mixed-Integer Nonlinear Programming Workshop (MINLP) [PDF] - Sep 2020
- Mixed-Integer Nonlinear Programming
4th Computational Optimization at Work (CO@Work), Berlin [PDF] - Jun 2020
- Nonlinear Constraints in SCIP
SCIP Workshop (SCIP), Berlin [PDF]
Research seminar talks
- Nov 2024
- New Perspectives on Invexity and Its Algorithmic Applications
Group seminar KTH Royal Institute of Technology, Stockholm - Nov 2024
- A Reformulation-Linearization Technique Framework for Problems with Bilinear Terms
Discrete Optimization Talks, online - Oct 2024
- New Perspectives on Invexity and Its Algorithmic Applications
Group seminar Laboratoire d'Informatique de Paris-Nord, Paris
đź“… Event Attendance
- Sep 2024
- OR Conference, Munich
- Jun 2024
- 33rd European Conference on Operational Research (EURO), Copenhagen
- Sep 2023
- 7th ZIB-IMI-ISM-NUS-RIKEN-MODAL Workshop, Berlin
- Aug 2023
- OR Conference, Hamburg
- Jun 2023
- 24th IPCO Conference, Madison
- May 2023
- 20th Mixed Integer Programming European Workshop (MIP)
- Jan 2023
- Combinatorial Optimization Workshop (Aussois), Aussois
- Nov 2022
- Let's SCIP it! (SCIP), Berlin
- Jul 2022
- 32nd European Conference on Operational Research (EURO), Espoo
- Sep 2021
- 5th ZIB-IMI-ISM-NUS-RIKEN-MODAL Workshop, Berlin
- Aug 2021
- 22nd IFORS Conference
- Jul 2021
- 31st European Conference on Operational Research (EURO), Athens
- Jun 2021
- Mixed-Integer Nonlinear Programming Workshop (MINLP)
- Sep 2020
- 4th Computational Optimization at Work (CO@Work), Berlin
- Jun 2020
- SCIP Workshop (SCIP), Berlin