Bilevel Optimization
Mathematical models in which one optimization problem is constrained by the solution of another.
Trier University, Germany
My research focuses on bilevel, mixed-integer, nonlinear, robust, equilibrium, and network optimization, with applications in energy systems and markets as well as machine learning and AI.

Mathematical models in which one optimization problem is constrained by the solution of another.
Theory and algorithms for optimization problems that combine discrete decisions with nonlinear constraints and objectives.
Models and algorithms for optimization under uncertain parameters, including robust and decision-dependent formulations.
Models and algorithms for interacting decision-makers, complementarity systems, and generalized Nash equilibrium problems.
Optimization models and algorithms for flows and decisions on energy and infrastructure networks.
Representative work across publications, research tools, and collaborative projects.
Benchmark Library
An open library of bilevel optimization benchmark instances in a standardized format.
BOBILib websiteBook
Yasmine Beck, Ivana Ljubić, Martin Schmidt
View publicationCurrent Project
Study of the existence, approximation, and computation of equilibria in aggregative games with discrete strategy spaces.
View A3G projectJournal Article
Thomas Kleinert, Martine Labbé, Fränk Plein, Martin Schmidt
View publicationA team of postdoctoral and doctoral researchers in mathematical optimization, supported by the secretary’s office.
Meet the group
Postdoctoral Researcher
Approximation of nonlinear functions by piecewise linear functions · Nash equilibria in mixed-integer programming games · branching methods

Postdoctoral Researcher
Bilevel optimization · mixed-integer optimization · nonlinear optimization

Doctoral Researcher
Bilevel optimization · optimization under decision-dependent uncertainty

Secretary's Office

Secretary's Office
A gateway to active benchmark libraries and research resources.
A collection of gas network data sets for optimization and algorithmic research.
Recent talks, publications, projects, and other research activity.
All newsMy academic career has included positions at Trier University, FAU Erlangen-Nürnberg, Leibniz Universität Hannover, and Zuse Institute Berlin. My academic service includes editorial work and leadership roles.
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