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Room
3106
Phone
+49 30 84185-192
Email

Projects

Projects as Member

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MODAL-SynLab

A major aim of the Research Campus MODAL is the development and use of mathematical synergies between the individual labs of the network. In this context, the fields of...

MODAL-SynLab
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Linear, Integer, and Constraint Programming

Many real world problems can be modeled as mixed integer programs (MIPs) or mixed integer nonlinear programs (MINLPs). This project aims at developing tools for modeling...

Linear, Integer, and Constraint Programming

Publications

2021
Estimating the Size of Branch-And-Bound Trees INFORMS Journal on Computing, 2021 (preprint available as ZIB-Report 20-02) Gregor Hendel, Daniel Anderson, Pierre Le Bodic, Marc Pfetsch PDF (ZIB-Report)
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DOI
Hendel, Gregor
MIPLIB 2017: Data-Driven Compilation of the 6th Mixed-Integer Programming Library Mathematical Programming Computation, 13(3), pp. 443-490, 2021 Ambros Gleixner, Gregor Hendel, Gerald Gamrath, Tobias Achterberg, Michael Bastubbe, Timo Berthold, Philipp M. Christophel, Kati Jarck, Thorsten Koch, Jeff Linderoth, Marco Lübbecke, Hans Mittelmann, Derya Ozyurt, Ted Ralphs, Domenico Salvagnin, Yuji Shinano BibTeX
DOI
Hendel, Gregor
2020
The SCIP Optimization Suite 7.0 ZIB-Report 20-10 Gerald Gamrath, Daniel Anderson, Ksenia Bestuzheva, Wei-Kun Chen, Leon Eifler, Maxime Gasse, Patrick Gemander, Ambros Gleixner, Leona Gottwald, Katrin Halbig, Gregor Hendel, Christopher Hojny, Thorsten Koch, Pierre Le Bodic, Stephen J. Maher, Frederic Matter, Matthias Miltenberger, Erik Mühmer, Benjamin Müller, Marc Pfetsch, Franziska Schlösser, Felipe Serrano, Yuji Shinano, Christine Tawfik, Stefan Vigerske, Fabian Wegscheider, Dieter Weninger, Jakob Witzig PDF
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Hendel, Gregor
2018
Adaptive Algorithmic Behavior for Solving Mixed Integer Programs Using Bandit Algorithms OR 2018: International Conference on Operations Research, Operations Research 2018 Proceedings, 2018 (accepted for publication, preprint available as ZIB-Report 18-36) Gregor Hendel, Matthias Miltenberger, Jakob Witzig PDF (ZIB-Report)
BibTeX
Hendel, Gregor
Adaptive Large Neighborhood Search for Mixed Integer Programming Mathematical Programming Computation, 2018 (under review, preprint available as ZIB-Report 18-60) Gregor Hendel PDF (ZIB-Report)
BibTeX
Hendel, Gregor
Clairvoyant Restarts in Branch-and-Bound Search Using Online Tree-Size Estimation AAAI-19: Proceedings of the Thirty-Third AAAI Conference on Artificial Intelligence, 2018 (accepted for publication, preprint available as ZIB-Report 19-11) Daniel Anderson, Gregor Hendel, Pierre Le Bodic, Jan Merlin Viernickel PDF (ZIB-Report)
BibTeX
Hendel, Gregor
Feature-Based Algorithm Selection for Mixed Integer Programming ZIB-Report 18-17 Alexander Georges, Ambros Gleixner, Gorana Gojic, Robert Lion Gottwald, David Haley, Gregor Hendel, Bartlomiej Matejczyk PDF
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Hendel, Gregor
The SCIP Optimization Suite 6.0 ZIB-Report 18-26 Ambros Gleixner, Michael Bastubbe, Leon Eifler, Tristan Gally, Gerald Gamrath, Robert Lion Gottwald, Gregor Hendel, Christopher Hojny, Thorsten Koch, Marco Lübbecke, Stephen J. Maher, Matthias Miltenberger, Benjamin Müller, Marc Pfetsch, Christian Puchert, Daniel Rehfeldt, Franziska Schlösser, Christoph Schubert, Felipe Serrano, Yuji Shinano, Jan Merlin Viernickel, Matthias Walter, Fabian Wegscheider, Jonas T. Witt, Jakob Witzig PDF
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Hendel, Gregor
2017
From feasibility to improvement to proof: three phases of solving mixed-integer programs Optimization Methods and Software, 33(3), pp. 499-517, 2017 (preprint available as ZIB-Report 16-78) Timo Berthold, Gregor Hendel, Thorsten Koch PDF (ZIB-Report)
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Hendel, Gregor
The SCIP Optimization Suite 4.0 ZIB-Report 17-12 Stephen J. Maher, Tobias Fischer, Tristan Gally, Gerald Gamrath, Ambros Gleixner, Robert Lion Gottwald, Gregor Hendel, Thorsten Koch, Marco Lübbecke, Matthias Miltenberger, Benjamin Müller, Marc Pfetsch, Christian Puchert, Daniel Rehfeldt, Sebastian Schenker, Robert Schwarz, Felipe Serrano, Yuji Shinano, Dieter Weninger, Jonas T. Witt, Jakob Witzig PDF
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Hendel, Gregor
The SCIP Optimization Suite 5.0 ZIB-Report 17-61 Ambros Gleixner, Leon Eifler, Tristan Gally, Gerald Gamrath, Patrick Gemander, Robert Lion Gottwald, Gregor Hendel, Christopher Hojny, Thorsten Koch, Matthias Miltenberger, Benjamin Müller, Marc Pfetsch, Christian Puchert, Daniel Rehfeldt, Franziska Schlösser, Felipe Serrano, Yuji Shinano, Jan Merlin Viernickel, Stefan Vigerske, Dieter Weninger, Jonas T. Witt, Jakob Witzig PDF
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Hendel, Gregor
2016
Exploiting Solving Phases for Mixed-Integer Programs Operations Research Proceedings 2015, pp. 3-9, 2016 (preprint available as ZIB-Report 15-64) Gregor Hendel PDF (ZIB-Report)
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Hendel, Gregor
The SCIP Optimization Suite 3.2 ZIB-Report 15-60 Gerald Gamrath, Tobias Fischer, Tristan Gally, Ambros Gleixner, Gregor Hendel, Thorsten Koch, Stephen J. Maher, Matthias Miltenberger, Benjamin Müller, Marc Pfetsch, Christian Puchert, Daniel Rehfeldt, Sebastian Schenker, Robert Schwarz, Felipe Serrano, Yuji Shinano, Stefan Vigerske, Dieter Weninger, Michael Winkler, Jonas T. Witt, Jakob Witzig PDF
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Hendel, Gregor
2015
Enhancing MIP Branching Decisions by Using the Sample Variance of Pseudo Costs Integration of AI and OR Techniques in Constraint Programming, pp. 199-214, Vol.9075, Lecture Notes in Computer Science, 2015 (preprint available as ZIB-Report 15-28) Gregor Hendel PDF (ZIB-Report)
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Hendel, Gregor
2014
Empirical Analysis of Solving Phases in Mixed Integer Programming Master's thesis, Technische Universität Berlin, Thorsten Koch, Timo Berthold (Advisors), 2014 Gregor Hendel PDF
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Hendel, Gregor
Shift-and-Propagate Journal of Heuristics, 21(1), pp. 73-106, 2014 (preprint available as ZIB-Report 13-03) Timo Berthold, Gregor Hendel PDF (ZIB-Report)
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Hendel, Gregor
2011
New Rounding and Propagation Heuristics for Mixed Integer Programming Bachelor's thesis, Technische Universität Berlin, 2011 Gregor Hendel PDF
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Hendel, Gregor
Rounding and Propagation Heuristics for Mixed Integer Programming Operations Research Proceedings 2011, pp. 71-76, 2011 (preprint available as ZIB-Report 11-29) Gregor Hendel, Timo Berthold, Tobias Achterberg PDF (ZIB-Report)
BibTeX
Hendel, Gregor