Flow-shop scheduling with exact delays to minimize makespan

被引:6
作者
Khatami, Mostafa [1 ,2 ]
Salehipour, Amir [3 ]
Cheng, T. C. E. [4 ]
机构
[1] Univ Technol Sydney, Sch Math & Phys Sci, Sydney, NSW 2007, Australia
[2] Queensland Univ Technol, Ctr Data Sci, Brisbane, Qld 4000, Australia
[3] Univ Sydney, Business Sch, Sydney, NSW, Australia
[4] Hong Kong Polytech Univ, PolyU Business Sch, Hong Kong, Peoples R China
基金
澳大利亚研究理事会;
关键词
Scheduling; Flow-shop; Coupled task; Exact delays; Pyramidal property; NO-WAIT FLOWSHOP; SEQUENCING PROBLEM; MACHINE; SHOP;
D O I
10.1016/j.cie.2023.109456
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
The flow-shop scheduling problem with exact delays is generalization of no-wait flow-shop scheduling in which an exact delay exists between the consecutive tasks of each job. The problem with distinct delays to minimize the makespan is strongly NP-hard even for the two-machine case with unit execution time tasks. Providing polynomial-time solutions for special cases of the problem, we show that the two-machine permutation flow-shop case is solvable in O(n log n) time, while the case with more than two machines is strongly NP-hard. We also show that the multi-machine case with delays following the ordered structure possesses the pyramidal-shaped property and propose an O(n2)-time dynamic program to solve it. We further improve the time complexity of the solution algorithm to O(n log n) under certain conditions.
引用
收藏
页数:8
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