Christopher Hojny

Publication Activity (10 Years)

Years Active: 2015-2024
Publications (10 Years): 29

Top Topics

Integer Program

Convex Optimization

Iterative Methods

Top Venues

Oper. Res. Lett.

Publications

Jasper van Doornmalen, Christopher Hojny
Efficient Propagation Techniques for Handling Cyclic Symmetries in Binary Programs. INFORMS J. Comput. 36 (3) (2024)
Daniel Dadush, Christopher Hojny, Sophie Huiberts, Stefan Weltge
A simple method for convex optimization in the oracle model. Math. Program. 206 (1) (2024)
Manuel Aprile, Gennadiy Averkov, Marco Di Summa, Christopher Hojny
The role of rationality in integer-programming relaxations. Math. Program. 205 (1) (2024)
Christopher Hojny, Shiqiang Zhang, Juan S. Campos, Ruth Misener
Verifying message-passing neural networks via topology-based bounds tightening. CoRR (2024)
Danny Blom, Christopher Hojny, Bart Smeulders
Cutting Plane Approaches for the Robust Kidney Exchange Problem. Comput. Oper. Res. 162 (2024)
Jan Pablo Burgard, Carina Moreira Costa, Christopher Hojny, Thomas Kleinert, Martin Schmidt
Mixed-integer programming techniques for the minimum sum-of-squares clustering problem. J. Glob. Optim. 87 (1) (2023)
Gennadiy Averkov, Christopher Hojny, Matthias Schymura
Computational aspects of relaxation complexity: possibilities and limitations. Math. Program. 197 (2) (2023)
Jasper van Doornmalen, Christopher Hojny, Roel Lambers, Frits C. R. Spieksma
Integer programming models for round robin tournaments. Eur. J. Oper. Res. 310 (1) (2023)
Christopher Hojny, Marc E. Pfetsch
Handling Symmetries in Mixed-Integer Semidefinite Programs. CPAIOR (2023)
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
Enabling Research through the SCIP Optimization Suite 8.0. ACM Trans. Math. Softw. 49 (2) (2023)
Gennadiy Averkov, Christopher Hojny, Matthias Schymura
Efficient MIP techniques for computing the relaxation complexity. Math. Program. Comput. 15 (3) (2023)
Christopher Hojny, Altan Berdan Kilic, Alberto Ravagnani
The Role of the Alphabet in Network Coding: An Optimization Approach. ITW (2023)
Daniel Kowalczyk, Roel Leus, Christopher Hojny, Stefan Røpke
A flow-based formulation for parallel machine scheduling using decision diagrams. CoRR (2022)
Christopher Hojny, Altan Berdan Kilic, Alberto Ravagnani
Network Coding: An Optimization Approach. CoRR (2022)
Daniel Kowalczyk, Roel Leus, Christopher Hojny, Stefan Røpke
A flow-based formulation for parallel machine scheduling problems using decision diagrams. ISAIM (2022)
Manuel Aprile, Gennadiy Averkov, Marco Di Summa, Christopher Hojny
The role of rationality in integer-programming relaxations. CoRR (2022)
Daniel Dadush, Christopher Hojny, Sophie Huiberts, Stefan Weltge
A Simple Method for Convex Optimization in the Oracle Model. IPCO (2022)
Christopher Hojny, Imke Joormann, Hendrik Lüthen, Martin Schmidt
Mixed-integer programming techniques for the connected max-k-cut problem. Math. Program. Comput. 13 (1) (2021)
Christopher Hojny
Strong IP formulations need large coefficients. Discret. Optim. 39 (2021)
Gennadiy Averkov, Christopher Hojny, Matthias Schymura
Computational Aspects of Relaxation Complexity. IPCO (2021)
Christopher Hojny
Polynomial size IP formulations of knapsack may require exponentially large coefficients. Oper. Res. Lett. 48 (5) (2020)
Christopher Hojny
Packing, partitioning, and covering symresacks. Discret. Appl. Math. 283 (2020)
Daniel Dadush, Christopher Hojny, Sophie Huiberts, Stefan Weltge
Simple Iterative Methods for Linear Optimization over Convex Sets. CoRR (2020)
Christopher Hojny, Tristan Gally, Oliver Habeck, Hendrik Lüthen, Frederic Matter, Marc E. Pfetsch, Andreas Schmitt
Knapsack polytopes: a survey. Ann. Oper. Res. 292 (1) (2020)
Christopher Hojny, Hendrik Lüthen, Marc E. Pfetsch
Sparsity of integer formulations for binary programs. Oper. Res. Lett. 47 (5) (2019)
Christopher Hojny, Marc E. Pfetsch, Matthias Walter
Integrality of Linearizations of Polynomials over Binary Variables using Additional Monomials. CoRR (2019)
Christopher Hojny, Marc E. Pfetsch
Polytopes associated with symmetry handling. Math. Program. 175 (1-2) (2019)
Christopher Hojny, Marc E. Pfetsch, Andreas Schmitt
Extended Formulations for Column Constrained Orbitopes. OR (2017)
Christopher Hojny, Marc E. Pfetsch
A polyhedral investigation of star colorings. Discret. Appl. Math. 208 (2016)
Christopher Hojny, Marc E. Pfetsch
Symmetry Handling via Symmetry Breaking Polytopes. CTW (2015)