Journal
EUROPEAN JOURNAL OF OPERATIONAL RESEARCH
Volume 193, Issue 1, Pages 59-72Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ejor.2007.10.051
Keywords
Machine scheduling; Logistics; Cross-docking
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This paper studies a two-machine cross-docking flow shop scheduling problem in which a job at the second machine can be processed only after the processing of some jobs at the first machine has been completed. The objective is to minimize the makespan. We first show that the problem is strongly NP-hard. Some polynomially solvable special cases are provided. We then develop a polynomial approximation algorithm with an error-bound analysis. A branch-and-bound algorithm is also constructed. Computational results show that the branch-and-bound algorithm can optimally solve problems with up to 60 jobs within a reasonable amount of time. (C) 2007 Elsevier B.V. All rights reserved.
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