A Tabu Search Heuristic for the Vehicle Routing Problem

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The purpose of this paper is to describe a new tabu search heuristic for the vehicle routing problem with capacity and route length restrictions. The algorithm starts with a set of routes containing one city each and then performs tabu moves consisting of inserting cities into different routes. This is done by means of a generalized insertion procedure previously developed by the authors. During the course of the algorithm, infeasible solutions are allowed. The algorithm ends with the application of a post-optimization procedure. Numerical tests on a set of benchmark problems indicate that the proposed algorithm outperforms previous heuristics.

, 36 pages

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