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The application of multilevel refinement to the vehicle routing problem

By Demane Rodney, Alan Soper and Christopher Walshaw

Abstract

We discuss the application of the multilevel (ML)\ud refinement technique to the Vehicle Routing Problem (VRP),\ud and compare it to its single-level (SL) counterpart. Multilevel refinement recursively coarsens to create a hierarchy of approximations to the problem and refines at each level. A SL heuristic, termed the combined node-exchange composite heuristic (CNCH), is developed first to solve instances of the VRP. A ML version (the ML-CNCH) is then created, using the construction and improvement heuristics of the CNCH at each level. Experimentation is used to find a suitable combination, which extends the global view of these heuristics. Results comparing both SL and ML are presented

Topics: QA75
Publisher: Institute of Electrical and Electronics Engineers, Inc.
Year: 2007
OAI identifier: oai:gala.gre.ac.uk:1142
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