Barcelona, España
Reino Unido
This paper studies the target visitation arc routing problem on an undirected graph.
This problem combines the well-known undirected rural postman problem and the linear ordering problem. In this problem, there is a set of required edges partitioned into targets, which must be traversed and there are pairwise preferences for the order in which some targets are serviced, which generates a revenue if the preference is satisfed. The aim is to fnd a tour that traverses all required edges at least once, and ofers a compromise between the revenue generated by the order in which targets are serviced, and the routing cost of the tour. A linear integer programming formulation including some families of valid inequalities is proposed. Despite the difculty of the problem, the model can be used to solve to optimality around 62% of the test instances.
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