An approximation algorithm for a general class of multi-parametric optimization problems. - Stephan Helfrich; Arne Herzel; Stefan Ruzika; Clemens Thielen (J. Comb. Optim., 2022)

Analysis of the weighted Tchebycheff weight set decomposition for multiobjective discrete optimization problems. - Stephan Helfrich; Tyler A. Perini; Pascal Halffmann; Natashia Boland; Stefan Ruzika (J. Glob. Optim., 2023)

Approximating biobjective minimization problems using general ordering cones. - Arne Herzel; Stephan Helfrich; Stefan Ruzika; Clemens Thielen (J. Glob. Optim., 2023)

Using scalarizations for the approximation of multiobjective optimization problems: towards a general theory. - Stephan Helfrich; Arne Herzel; Stefan Ruzika; Clemens Thielen (Math. Methods Oper. Res., 2024)

The Weighted p-Norm Weight Set Decomposition for Multiobjective Discrete Optimization Problems. - Stephan Helfrich; Kathrin Prinz; Stefan Ruzika (J. Optim. Theory Appl., 2024)