Projects
Projects as Member
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
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Hendel, Gregor, Dr.
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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
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Hendel, Gregor, Dr.
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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
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Hendel, Gregor, Dr.
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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
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Hendel, Gregor, Dr.
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Adaptive Large Neighborhood Search for Mixed Integer Programming
Mathematical Programming Computation, 2018 (under review, preprint available as ZIB-Report 18-60)
Gregor Hendel
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Hendel, Gregor, Dr.
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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
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Hendel, Gregor, Dr.
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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
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Hendel, Gregor, Dr.
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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
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Hendel, Gregor, Dr.
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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
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Hendel, Gregor, Dr.
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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
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Hendel, Gregor, Dr.
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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
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Hendel, Gregor, Dr.
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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
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Hendel, Gregor, Dr.
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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
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Hendel, Gregor, Dr.
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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
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Hendel, Gregor, Dr.
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2014
Empirical Analysis of Solving Phases in Mixed Integer Programming
Master's thesis, Technische Universität Berlin, Thorsten Koch, Timo Berthold (Advisors), 2014
Gregor Hendel
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Hendel, Gregor, Dr.
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Shift-and-Propagate
Journal of Heuristics, 21(1), pp. 73-106, 2014 (preprint available as ZIB-Report 13-03)
Timo Berthold, Gregor Hendel
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Hendel, Gregor, Dr.
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2011
New Rounding and Propagation Heuristics for Mixed Integer Programming
Bachelor's thesis, Technische Universität Berlin, 2011
Gregor Hendel
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Hendel, Gregor, Dr.
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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
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Hendel, Gregor, Dr.
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