2023
A proof system for certifying symmetry and optimality reasoning in integer programming
Optimization Seminar, Imperial College, London, England, December 1, 2023
A Unified Framework for Symmetry Handling
Workshop: Learning from Both Sides Linear and Nonlinear Mixed-Integer Optimization 2023, Mittag-Leffler Institute
Djursholm, Sweden, July 7, 2023
Handling Symmetries in Mixed-Integer Semidefinite Programs
CPAIOR 2023,
Nice, France, May 30, 2023
Relaxation Complexity: Algorithmic Possibilities and Limitations
GMZ 60: Geometry, Topology, Community; Celebrating the 60th birthday of Günter M. Ziegler,
Berlin, Germany, May 19, 2023 (invited talk)
A Unified Framework for Symmetry Handling
Seminar, Delft University of Technology,
Delft, The Netherlands, March 15, 2023 (invited talk)
Relaxation Complexity: Algorithmic Possibilities and Limitations
Dutch Seminar on Optimization,
February 23, 2023 (invited talk)
A Unified Framework for Symmetry Handling
Aussois COW 2023,
Aussois, France, January 10, 2023
2022
The role of rationality in integer programming formulations
Discrete Optimization Talks,
November 18, 2022 (invited talk)
The role of rationality in integer programming formulations
Seminar, Tilburg University, The Netherlands,
November 10, 2022 (invited talk)
Symmetry Handling in SCIP---An Overview
Let's SCIP it! A workshop to celebrate 20 year of Solving Constraint Integer Programs,
Berlin, Germany,
November 4, 2022 (invited talk)
Mixed-Integer Programming Techniques for the Minimum Sum-of-squares Clustering Problem,
INFORMS Annual Meeting 2022,
Indianapolis, IN,
November 10, 2022 (invited talk)
Schreier-Sims Cuts meet Stable Set: Exploiting Problem Structure to Derive Symmetry Handling Inequalities
EURO2022,
Espoo, Finland,
July 5, 2022 (invited talk)
Efficient MIP Techniques for Computing the Relaxation Complexity
Workshop on Separating Integer Points in Polyhedra: Theory and Applications,
Eindhoven, The Netherlands,
July 1, 2022
2021
Exploiting Subgroup Structures in Symmetry Handling
EURO2021,
Athens, Greece, July 14, 2021 (invited talk)
Computational Aspects of Relaxation Complexity
MIP Workshop 2021,
online, May 26, 2021 (invited talk),
video
Computational Aspects of Relaxation Complexity
IPCO 2021,
Atlanta, Georgia, May 21, 2021
2020
Mixed-Integer Programming Techniques for the Connected Max-k-Cut Problem
SCIP Online Workshop 2020,
hosted by University of Exeter, Exeter, England, June 4, 2020 (invited talk)
2019
Symretopes and Symresacks: A Framework for Deriving Generic and Problem Specific Symmetry Handling Inequalities
Workshop on Extended Formulations and Symmetries in Integer Programming,
Universidad de O'Higgins, Rancagua, Chile, December 9, 2019 (invited talk)
Strong IP Formulations Need Large Coefficients
OR 2019,
Dresden, Germany, September 6, 2019
Symmetry Handling in Binary Programs: Combining Symretopes and Orbital Fixing
ALOP Colloquium, Trier University, Germany, July 1, 2019 (invited talk)
Strong IP Formulations Need Large Coefficients
N&O Seminar, Centrum Wiskunde & Informatica (CWI), Netherlands, March 27, 2019
Strong IP Formulations Need Large Coefficients
Aussois COW 2019,
Aussois, France, January 9, 2019
2018
Symmetry Breaking Polytopes: A Framwork for Symmetry Handling in Binary Programs
ISMP 2018,
Bordeaux, France, July 3, 2018 (invited talk)
Symmetry Breaking Polytopes: A Framwork for Symmetry Handling in Binary Programs
Aussois COW 2018,
Aussois, France, January 12, 2018
2017
On the Size of Integer Programs with Bounded Coefficients or Sparse Constraints
FRICO 2017,
Trier, Germany, August 16, 2017
2016
Symmetry Handling in Binary Programs via Polyhedral Methods
ICMS 2016,
Berlin, Germany, July 14, 2016
Polytopes Associated with Symmetry Handling
Aussois COW 2016,
Aussois, France, January 5, 2016
2015
Polyhedral Symmetry Handling via Fundamental Domains
ISMP 2015,
Pittsburgh, PA, July 15, 2015 (invited talk)
Symmetry Handling via Symmetry Breaking Polytopes
CTW 2015,
Marmara University Istanbul, May 26, 2015
2014
Polyhedral description of star colorings
FRICO 2014,
Otto von Guericke Universität Magdeburg, July 30, 2014