Christopher Hojny

41 papers A* 2B 4C 2Misc 1Journal 30Unranked 2
YearRankTypeTitle / Venue / Authors
2026 J jnl
Capacity of Non-Separable Networks with Restricted Adversaries.
CoRR
Christopher Hojny, Altan Berdan Kilic, Sascha Kurz, Alberto Ravagnani
2026 J jnl
Detecting and handling reflection symmetries in mixed-integer (nonlinear) programming and beyond.
Math. Program. Comput.
Christopher Hojny
2025 J jnl
A unified framework for symmetry handling.
Math. Program.
Jasper van Doornmalen, Christopher Hojny
2025 J jnl
Computational aspects of lifted cover inequalities for knapsacks with few different weights.
Discret. Optim.
Christopher Hojny, Cédric Roy
2025 C conf
Evaluating Fairness of Sequential Resource Allocation Policies: A Computational Study.
ATMOS
Christopher Hojny, Frits C. R. Spieksma, Sten Wessel
2025 J jnl
Fairness in graph-theoretical optimization problems.
Discret. Appl. Math.
Christopher Hojny, Frits C. R. Spieksma, Sten Wessel
2025 A* conf
On the Expressiveness of Rational ReLU Neural Networks With Bounded Depth.
ICLR
Gennadiy Averkov, Christopher Hojny, Maximilian Merkert
2025 J jnl
On the Expressiveness of Rational ReLU Neural Networks With Bounded Depth.
CoRR
Gennadiy Averkov, Christopher Hojny, Maximilian Merkert
2024 J jnl
A Flow-Based Formulation for Parallel Machine Scheduling Using Decision Diagrams.
INFORMS J. Comput.
Daniel Kowalczyk, Roel Leus, Christopher Hojny, Stefan Røpke
2024 J jnl
A simple method for convex optimization in the oracle model.
Math. Program.
Daniel Dadush, Christopher Hojny, Sophie Huiberts, Stefan Weltge
2024 J jnl
Cutting Plane Approaches for the Robust Kidney Exchange Problem.
Comput. Oper. Res.
Danny Blom, Christopher Hojny, Bart Smeulders
2024 J jnl
Efficient Propagation Techniques for Handling Cyclic Symmetries in Binary Programs.
INFORMS J. Comput.
Jasper van Doornmalen, Christopher Hojny
2024 — conf
Fairness in Graph-theoretical Optimization Problems.
EWAF
Christopher Hojny, Frits C. R. Spieksma, Sten Wessel
2024 J jnl
The role of rationality in integer-programming relaxations.
Math. Program.
Manuel Aprile, Gennadiy Averkov, Marco Di Summa, Christopher Hojny
2024 A* conf
Verifying message-passing neural networks via topology-based bounds tightening.
ICML
Christopher Hojny, Shiqiang Zhang, Juan S. Campos, Ruth Misener
2024 J jnl
Verifying message-passing neural networks via topology-based bounds tightening.
CoRR
Christopher Hojny, Shiqiang Zhang, Juan S. Campos, Ruth Misener
2023 J jnl
Computational aspects of relaxation complexity: possibilities and limitations.
Math. Program.
Gennadiy Averkov, Christopher Hojny, Matthias Schymura
2023 J jnl
Efficient MIP techniques for computing the relaxation complexity.
Math. Program. Comput.
Gennadiy Averkov, Christopher Hojny, Matthias Schymura
2023 J jnl
Enabling Research through the SCIP Optimization Suite 8.0.
ACM Trans. Math. Softw.
Ksenia Bestuzheva, Mathieu Besançon, Weikun Chen, Antonia Chmiela, Tim Donkiewicz, Jasper van Doornmalen, Leon Eifler, Oliver Gaul, Gerald Gamrath, Ambros M. Gleixner, Leona Gottwald, Christoph Graczyk, Katrin Halbig, Alexander Hoen, Christopher Hojny, Rolf van der Hulst, Thorsten Koch, Marco E. Lübbecke, Stephen J. Maher, Frederic Matter, Erik Mühmer, Benjamin Müller, Marc E. Pfetsch, Daniel Rehfeldt, Steffan Schlein, Franziska Schlösser, Felipe Serrano, Yuji Shinano, Boro Sofranac, Mark Turner, Stefan Vigerske, Fabian Wegscheider, Philipp Wellner, Dieter Weninger, Jakob Witzig
2023 B conf
Handling Symmetries in Mixed-Integer Semidefinite Programs.
CPAIOR
Christopher Hojny, Marc E. Pfetsch
2023 J jnl
Integer programming models for round robin tournaments.
Eur. J. Oper. Res.
Jasper van Doornmalen, Christopher Hojny, Roel Lambers, Frits C. R. Spieksma
2023 J jnl
Mixed-integer programming techniques for the minimum sum-of-squares clustering problem.
J. Glob. Optim.
Jan Pablo Burgard, Carina Moreira Costa, Christopher Hojny, Thomas Kleinert, Martin Schmidt
2023 B conf
The Role of the Alphabet in Network Coding: An Optimization Approach.
ITW
Christopher Hojny, Altan Berdan Kilic, Alberto Ravagnani
2022 B conf
A Simple Method for Convex Optimization in the Oracle Model.
IPCO
Daniel Dadush, Christopher Hojny, Sophie Huiberts, Stefan Weltge
2022 Misc conf
A flow-based formulation for parallel machine scheduling problems using decision diagrams.
ISAIM
Daniel Kowalczyk, Roel Leus, Christopher Hojny, Stefan Røpke
2022 J jnl
A flow-based formulation for parallel machine scheduling using decision diagrams.
CoRR
Daniel Kowalczyk, Roel Leus, Christopher Hojny, Stefan Røpke
2022 J jnl
Network Coding: An Optimization Approach.
CoRR
Christopher Hojny, Altan Berdan Kilic, Alberto Ravagnani
2022 J jnl
The role of rationality in integer-programming relaxations.
CoRR
Manuel Aprile, Gennadiy Averkov, Marco Di Summa, Christopher Hojny
2021 B conf
Computational Aspects of Relaxation Complexity.
IPCO
Gennadiy Averkov, Christopher Hojny, Matthias Schymura
2021 J jnl
Mixed-integer programming techniques for the connected max-k-cut problem.
Math. Program. Comput.
Christopher Hojny, Imke Joormann, Hendrik Lüthen, Martin Schmidt
2021 J jnl
Strong IP formulations need large coefficients.
Discret. Optim.
Christopher Hojny
2020 J jnl
Knapsack polytopes: a survey.
Ann. Oper. Res.
Christopher Hojny, Tristan Gally, Oliver Habeck, Hendrik Lüthen, Frederic Matter, Marc E. Pfetsch, Andreas Schmitt
2020 J jnl
Packing, partitioning, and covering symresacks.
Discret. Appl. Math.
Christopher Hojny
2020 J jnl
Polynomial size IP formulations of knapsack may require exponentially large coefficients.
Oper. Res. Lett.
Christopher Hojny
2020 J jnl
Simple Iterative Methods for Linear Optimization over Convex Sets.
CoRR
Daniel Dadush, Christopher Hojny, Sophie Huiberts, Stefan Weltge
2019 J jnl
Integrality of Linearizations of Polynomials over Binary Variables using Additional Monomials.
CoRR
Christopher Hojny, Marc E. Pfetsch, Matthias Walter
2019 J jnl
Polytopes associated with symmetry handling.
Math. Program.
Christopher Hojny, Marc E. Pfetsch
2019 J jnl
Sparsity of integer formulations for binary programs.
Oper. Res. Lett.
Christopher Hojny, Hendrik Lüthen, Marc E. Pfetsch
2017 — conf
Extended Formulations for Column Constrained Orbitopes.
OR
Christopher Hojny, Marc E. Pfetsch, Andreas Schmitt
2016 J jnl
A polyhedral investigation of star colorings.
Discret. Appl. Math.
Christopher Hojny, Marc E. Pfetsch
2015 C conf
Symmetry Handling via Symmetry Breaking Polytopes.
CTW
Christopher Hojny, Marc E. Pfetsch