Minimizing Total Weighted Late Work in a Proportionate Flow Shop with Job Rejection
Ren-Xia Chen,
Shi-Sheng Li () and
Qi Feng ()
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Ren-Xia Chen: School of Mathematics and Information Science, Zhongyuan University of Technology, Zhengzhou 450007, People’s Republic of China
Shi-Sheng Li: School of Mathematics and Information Science, Zhongyuan University of Technology, Zhengzhou 450007, People’s Republic of China
Qi Feng: School of Mathematics and Information Science, Zhongyuan University of Technology, Zhengzhou 450007, People’s Republic of China
Asia-Pacific Journal of Operational Research (APJOR), 2024, vol. 41, issue 03, 1-23
Abstract:
In this paper, we investigate a scheduling problem with optional job rejection in a proportionate flow shop setting, where the job processing times are machine independent. A solution to our problem is characterized by (i) partitioning the set of jobs into a set of accepted jobs and a set of rejected jobs, and (ii) scheduling the accepted jobs in a proportionate flow shop setting. The aim is to find a solution to minimize the sum of total weighted late work of the accepted jobs and total rejection cost of the rejected jobs. When all jobs share a common due date, we show that the single-machine case is ð ’©ð ’«-hard by reduction from the Subset Sum problem. When the operations of all jobs have equal processing times, we solve the case in O(n3) time by reducing it into a linear assignment problem. For the general problem, we first provide a pseudo-polynomial-time algorithm via the dynamic programming method, then we convert it into a fully polynomial time approximation scheme. As a byproduct, we also resolve an open question in the literature.
Keywords: Scheduling; proportionate flow shop; late work; rejection (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1142/S0217595923500239
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