Matheuristics 2016 - Proceedings of the Sixth International Workshop on Model-based Metaheuristics

These proceedings comprise the contributions that have been presented at Matheuristics 2016, the Sixth International Workshop on Model-based Meta- heuristics, which was held in Brussels from September 4–7, 2016. The Matheuris- tics series started in 2008 with the first workshop held in the scenic Bertinoro, Italy, organized by Vittorio Maniezzo, and since then is held every two years. The Matheuristics workshop series has been established as a primary forum for researchers working on exploiting mathematical programming techniques in a (meta)heuristic framework, granting to mathematical programming approaches the problem robustness and time effectiveness which characterize heuristics, or exploiting the mathematical programming model formulation in the customiza- tion of a heuristic for specific or general problems. Matheuristics 2016 collects contributions that define the state of the art for the computational effectiveness and efficiency or the theoretical properties of matheuristics, which are algorithms and codes that integrate (meta)-heuristics and MIP strategies and software. The workshop was entirely devoted to this subject of research and to its applications. The workshop program consisted of three invited talks: – Christian Blum talked about Combining Metaheuristics based on Solution Construction with Exact Techniques. – Marco Luebbecke presented his research on GCG: A Generic Branch-Price- and-Cut Solver. – Kenneth S¨orensen discussed the recent controversy on supposedly new meta- heuristics and asked Metaphor-Based Metaheuristics: Who’s to Blame? The invited talks were complemented by an invited hands-on tutorial, given by Leslie Perez, on setting up and tuning automatically algorithms with the irace software package, which is a software for the automated configuration of algorithms. Apart from these invited presentation, the conference programme comprised 18 further presentation on the rich research topics in the area of Matheuristics. We would like to use this opportunity to thank the many people who have contributed to this workshop and helped to make it a success. We would like to thank all the authors for submitting their research to Matheuristics, the in- ternational Programme Committee for the careful evaluation of the articles, the COMEX PAI project and ULB for the support of this workshop, and to the staff at IRIDIA for helping in organizational matters. Special thanks go to Alberto Franzin for the continuous support in all technical details from webpage design to practical help in preparation of the conference material. We hope that the reader will find these proceedings useful for a reference on the current work in Matheuristics and an inspiring source for own new develop- ments. September 2016 Vittorio Maniezzo Thomas Stutzle