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hal.structure.identifierReformulations based algorithms for Combinatorial Optimization [Realopt]
dc.contributor.authorSADYKOV, Ruslan
hal.structure.identifierUniversidade Federal Fluminense [Rio de Janeiro] [UFF]
dc.contributor.authorPESSOA, Artur Alves
hal.structure.identifierUniversidade Federal Fluminense [Rio de Janeiro] [UFF]
dc.contributor.authorUCHOA, Eduardo
dc.date.accessioned2024-04-04T03:06:59Z
dc.date.available2024-04-04T03:06:59Z
dc.date.conference2017-07-17
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/193391
dc.description.abstractEnIn this work we propose a new Branch-Cut-and-Price algorithm for the distance constrained multi-depot vehicle routing problem. The algorithm combines many state-of-the-art techniques known to be efficient for routing problems : bi-directional ng-path based labelling algorithm to solve the pricing problem, generation of limited memory rank-1 cuts with up to 5 rows, reduced cost fixing of arcs, enumeration of elementary routes, and multi-phase strong branching with pseudo-costs. The main contribution of this work is an improvement of the labelling algorithm for the resource constrained shortest path problem with two resources. The labels with similar resource consumption are stored in buckets which are organised in so-called bucket graph. This organisation allows one to significantly reduce the number of dominance checks, exploit route symmetry, and perform reduced cost fixing of bucket arcs. Experiments showed that our algorithm is able to solve to optimality several open instances of the problem with up to 216 customers within the 2 hours time limit. The improvement of the solution time over the recent state-of-the-art algorithm by Contardo and Martinelli (2014) is up to two-three orders of magnitude.
dc.language.isoen
dc.title.enA branch-cut-and-price algorithm for the distance constrained multi-depot vehicle routing problem
dc.typeCommunication dans un congrès
dc.subject.halInformatique [cs]/Recherche opérationnelle [cs.RO]
bordeaux.hal.laboratoriesInstitut de Mathématiques de Bordeaux (IMB) - UMR 5251*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.conference.titleIFORS 2017 - 21st Conference of the International Federation of Operational Research Societies
bordeaux.countryCA
bordeaux.conference.cityQuebec City
bordeaux.peerReviewedoui
hal.identifierhal-01676023
hal.version1
hal.invitednon
hal.proceedingsnon
hal.conference.end2017-07-21
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01676023v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=SADYKOV,%20Ruslan&PESSOA,%20Artur%20Alves&UCHOA,%20Eduardo&rft.genre=unknown


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