Cut-First Branch-and-Price Second for the Capacitated Arc-Routing Problem

Claudia Schlebusch () and Stefan Irnich ()
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Claudia Schlebusch: Johannes Gutenberg University Mainz
Stefan Irnich: Johannes Gutenberg University Mainz

A chapter in Operations Research Proceedings 2014, 2016, pp 501-506 from Springer

Abstract: Abstract The basic multiple-vehicleSchlebusch, Claudia arc-routingIrnich, Stefan problem is called capacitated arc-routing problem (CARP) and was introduced by Golden and Wong (Networks 11:305–315, 1981 [9]). This paper presents a full-fledged branch-and-price (bap) algorithm for the CARP. In the first phase, the one-index formulation of the CARP is solved in order to produce strong cuts and an excellent lower bound. In the second phase, the master program is initialized with the strong cuts, CARP tours are iteratively generated by a pricing procedure, and branching is required to produce integer solutions. Furthermore, different pricing problem relaxations are analyzed and the construction of new labeling algorithms for their solution is presented. The cut-first branch-and-price second algorithm provides a powerful approach to solve knowingly hard instances of the CARP to proven optimality.

Keywords: Proven Optimality; Pricing Problem; Infeasible Integer Solutions; Standard Benchmark Set; Branching Strategy (search for similar items in EconPapers)
Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:spr:oprchp:978-3-319-28697-6_70

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DOI: 10.1007/978-3-319-28697-6_70

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