Universidade Federal do Rio de Janeiro COPPE

Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia

Instituto de Matemática

 
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Evento: 'Palestra do Prof. Bernard Gendron, Diretor do CIRRELT, Montréal, Québec'

Eventos PESC (Palestras, Seminários, etc.)
Palestras, Seminários, etc. do PESC/COPPE/UFRJ.
Data: Tuesday, March 06, 2012 At 10:00
Duração: 2 Horas

PALESTRA

Data: 06 de março de 2012 (terça-feira)
Horário: 10:00 horas
Sala: H-324B, bloco H, terceiro andar, Centro de Tecnologia, UFRJ, Ilha do Fundão

Palestrante:
Bernard Gendron
Diretor do CIRRELT (Centre Interuniversitaire de Recherche sur les Réseaux d'Entreprise, la Logistique et le Transport)
e Professor Titular do DIRO (Département d'Informatique et de Recherche Opérationnelle)
Université de Montréal

Título: Models and Methods for a Two-Echelon Adaptive Location-Distribution Problem*

*(Joint work with Paul-Virak Khuong, CIRRELT and DIRO, Université de Montréal, Frédéric Semet, Ecole Centrale de Lille)

Resumo
We consider a two-echelon location-distribution problem arising from an actual application in fast delivery service. This problem belongs to the class of adaptive logistics problems, as the locations of the facilities (typically, parking spaces) are revised on a daily basis according to demand variations. We present and compare two formulations for this problem: an arc-based model and a path-based model. Since large-scale instances cannot be solved in reasonable time by state-of-the-art integer programming software tools, we introduce a heuristic method based on a variable neighborhood search approach. We also present an exact algorithm based on Lagrangian decomposition, which solves as a subproblem the two-echelon uncapacitated facility location problem using a combination of Lagrangian relaxation and matheuristic approaches.


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