Busca tabu para o problema de roteamento dinamico de veiculos com janelas de tempo

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

The dynamic vehicle routing problem with time windows (DVRPTW) originates from the static vehicle routing problem with time windows (VRPTW). The objective of the static problem is to serve a given set of clients within their time window constraints, subject to each vehicle capacity, minimizing the number of vehicles and the distance traveled. In this problem, all data needed to create routes is previously known. In the DVRPTW, some information, for instance, the positioning and demand of some clients, is dynamic revealed for the decision maker at the same time in which the drivers are executing their routes. This work studies and develops methods for the VRPTW and DVRPTW. Constructive heuristics, as well as a suggestion of an heuristic focused on route minimization, are discussed for the VRPTW. Also for the same problem, local and tabu search methods based on the granular neighborhood are tested. Afterward, these heuristics are adapted and applied for the DVRPTW, evaluating the benefits of diversion and waiting and positioning strategies. Computational experiments for the DVRPTW are performed with a simulation environment founded on practical attributes collected during interviews with transportation companies of the Campinas and São Paulo region

ASSUNTO(S)

pesquisa operacional heuristica caminhões

ACESSO AO ARTIGO

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