A generalized insertion heuristic for the traveling salesman problem with time windows

A generalized insertion heuristic for the traveling salesman problem with time windows

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Article ID: iaor19992045
Country: United States
Volume: 46
Issue: 3
Start Page Number: 330
End Page Number: 335
Publication Date: May 1998
Journal: Operations Research
Authors: , , ,
Abstract:

This article describes a generalized insertion heuristic for the Traveling Salesman Problem with Time Windows in which the objective is the minimization of travel times. The algorithm gradually builds a route by inserting at each step a vertex in its neighbourhood on the current route, and performing a local reoptimization. This is done while checking the feasibility of the remaining part of the route. Backtracking is sometimes necessary. Once a feasible route has been determined, an attempt is made to improve it by applying a post-optimization phase based on the successive removal and reinsertion of all vertices. Tests performed on 375 instances indicate that the proposed heuristic compares very well with alternative methods and very often produces optimal or near-optimal solutions.

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