Optimizing container relocation operations at container yards with beam search

Ching-Jung Ting and Kun-Chih Wu

Transportation Research Part E: Logistics and Transportation Review, 2017, vol. 103, issue C, 17-31

Abstract: Container relocation problem (CRP) involves the retrieval of all containers from the container yard with a minimum number of relocations. The CRP is an NP-hard problem such that the large-scale instances cannot be solved to optimality by exact solution methods within a reasonable computational time. This article proposes a beam search (BS) algorithm embedded with heuristics to evaluate the problems. The proposed beam search is tested on benchmark instances and compared with other leading heuristics from the literature. Computational results demonstrate that the beam search algorithm is compatible with other heuristics and can obtain good solutions in short time.

Keywords: Container relocation; Logistics; Beam search; Container yard (search for similar items in EconPapers)
Date: 2017
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Citations: View citations in EconPapers (16)

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DOI: 10.1016/j.tre.2017.04.010

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