Letchford, A N and Lysgaard, J and Eglese, R W (2007) A branch-and-cut-algorithm for the capacitated open vehicle routing problem. Journal of the Operational Research Society, 58 (12). pp. 1642-1651.Full text not available from this repository.
In open vehicle routing problems, the vehicles are not required to return to the depot after completing service. In this paper, we present the first exact optimization algorithm for the open version of the well-known capacitated vehicle routing problem (CVRP). The algorithm is based on branch-and-cut. We show that, even though the open CVRP initially looks like a minor variation of the standard CVRP, the integer programming formulation and cutting planes need to be modified in subtle ways. Computational results are given for several standard test instances, which enables us for the first time to assess the quality of existing heuristic methods, and to compare the relative difficulty of open and closed versions of the same problem.
|Journal or Publication Title:||Journal of the Operational Research Society|
|Uncontrolled Keywords:||vehicle routing ; branch-and-cut ; separation|
|Subjects:||H Social Sciences > HB Economic Theory|
|Departments:||Lancaster University Management School > Management Science|
|Deposited On:||11 Jul 2011 19:19|
|Last Modified:||26 Jul 2012 19:05|
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