A branch-price-and-cut algorithm for the min-max k-vehicle windy rural postman problem

A branch-price-and-cut algorithm for the min-max k-vehicle windy rural postman problem

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Article ID: iaor201522234
Volume: 63
Issue: 1
Start Page Number: 34
End Page Number: 45
Publication Date: Jan 2014
Journal: Networks
Authors: , , , , ,
Keywords: branch-and-cut, minimax problem, postman problem, branch and price
Abstract:

The min‐max k‐vehicles windy rural postman problem consists of minimizing the maximal distance traveled by a vehicle to find a set of balanced routes that jointly service all the required edges in a windy graph. This is a very difficult problem, for which a branch‐and‐cut algorithm has already been proposed, providing good results when the number of vehicles is small. In this article, we present a branch‐price‐and‐cut method capable of obtaining optimal solutions for this problem when the number of vehicles is larger for the same set of required edges. Extensive computational results on instances from the literature are presented.

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