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Séminaire du GERAD

Learning variable neighborhood search for a job-scheduling problem

vendredi 21 juin 2019 de 10 h 30 à 11 h 30

Nicolas Zufferey – GSEM, Université de Genève, Suisse

« Variable neighborhood search is a local search metaheuristic that uses sequentially different neighborhood structures. This method has been successfully applied to various types of problems. In this work, variable neighborhood search is enhanced with a learning mechanism which helps to drive the search toward promising areas of the search space. The resulting method is applied to a single-machine scheduling problem with rejections, setups, and earliness and tardiness penalties. Experiments are conducted for instances from the literature. They show on the one hand the benefit of the learning mechanism (in terms of solution quality and robustness). On the other hand, the proposed method significantly outperforms state-of-the-art algorithms for the considered problem. Moreover, its flexibility allows its straightforward adaptation to other combinatorial optimization problems. »

Présenté par le GERAD conjointement avec la Chaire en logistique et en transport.

Entrée gratuite. Bienvenue à tous!

Lieu : Université de Montréal, Pavillon André-Aisenstadt, Salle 4488

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