no code implementations • 15 Apr 2024 • Arkadiy Dushatskiy, Esther Julien, Leo van Iersel, Leen Stougie
In particular, we propose to combine the given network and the tree and apply a Graph Neural Network to this network-tree graph.
1 code implementation • 4 Feb 2024 • Justin Dumouchelle, Esther Julien, Jannis Kurtz, Elias B. Khalil
Bilevel optimization deals with nested problems in which a leader takes the first decision to minimize their objective function while accounting for a follower's best-response reaction.
1 code implementation • 6 Oct 2023 • Justin Dumouchelle, Esther Julien, Jannis Kurtz, Elias B. Khalil
This work addresses two-stage robust optimization (2RO) problems (also called adjustable robust optimization), wherein first-stage and second-stage decisions are made before and after uncertainty is realized, respectively.
1 code implementation • 31 Mar 2023 • Giulia Bernardini, Leo van Iersel, Esther Julien, Leen Stougie
In this paper, we apply the recently-introduced theoretical framework of cherry picking to design a class of efficient heuristics that are guaranteed to produce a network containing each of the input trees, for datasets consisting of binary trees.
1 code implementation • 20 Oct 2022 • Esther Julien, Krzysztof Postek, Ş. İlker Birbil
One of the solution approaches to this class of problems is K-adaptability.