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发布时间：2019-03-11

论文类型：期刊论文

发表时间：2017-03-29

发表刊物：Theoretical Computer Science

收录刊物：EI

卷号：670

期号：670

页面范围：79-85

ISSN号：03043975

摘要：In this paper we study a flow shop problem F2→D|v=1,c ?|Cmaxwith two machines and one transporter: machines A,B and a transporter V which is initially located at machine B. There are a set of jobs needed to be processed on machine A first, then on machine B, and transported to the destination by V finally. Transporter V can carry at most c jobs in one batch where c ?. The objective is to minimize the completion time when all the jobs are transported to the destination. Problem F2→D|v=1,c=2|Cmaxhas been proved to be binary NP-hard in EJOR2007 [20] when c=2, we solve the open question in [20] and prove it is strongly NP-hard, i.e., there is no FPTAS for the problem. © 2017 Elsevier B.V.