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The split-demand one-commodity pickup-and-delivery travelling salesman problem

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published
<mark>Journal publication date</mark>05/2015
<mark>Journal</mark>Transportation Research Part B: Methodological
Volume75
Number of pages16
Pages (from-to)58-73
Publication StatusPublished
Early online date19/03/15
<mark>Original language</mark>English

Abstract

This paper introduces a new vehicle routing problem transferring one commodity between customers with a capacitated vehicle that can visit a customer more than once, although a maximum number of visits must be respected. It generalizes the capacitated vehicle routing problem with split demands and some other variants recently addressed in the literature. We model the problem with a single commodity flow formulation and design a branch-and-cut approach to solve it. We make use of Benders Decomposition to project out the flow variables from the formulation. Inequalities to strengthen the linear programming relaxation are also presented and separated within the approach. Extensive computational results illustrate the performance of the approach on benchmark instances from the literature. (C) 2015 Elsevier Ltd. All rights reserved.