Title
The **k**-dissimilar vehicle routing problem The **k**-dissimilar vehicle routing problem
Author
Faculty/Department
Faculty of Applied Economics
Publication type
article
Publication
Amsterdam ,
Subject
Economics
Mathematics
Source (journal)
European journal of operational research. - Amsterdam
Volume/pages
244(2015) :1 , p. 129-140
ISSN
0377-2217
ISI
000352667900013
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
In this paper we define a new problem, the aim of which is to find a set of k dissimilar solutions for a vehicle routing problem (VRP) on a single instance. This problem has several practical applications in the cash-in-transit sector and in the transportation of hazardous materials. A minmax mathematical formulation is proposed which requires a maximum similarity threshold between VRP solutions, and the number k of dissimilar VRP solutions that need to be generated. An index to measure similarities between VRP solutions is defined based on the edges shared between pairs of alternative solutions. An iterative metaheuristic to generate k dissimilar alternative solutions is also presented. The solution approach is tested using large and medium size benchmark instances for the capacitated vehicle routing problem. Keywords Decision support systems; Combinatorial optimization; Metaheuristic; Logistics; Risk management
E-info
https://repository.uantwerpen.be/docman/iruaauth/daf801/0edf9563fe3.pdf
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