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Two-machine flow-shop scheduling with deterioration and rejection

MIAO Cuixia1,*  MENG Fanxiao1   

  1. 1. School of Mathematical Sciences, Qufu Normal University, Qufu 273165, Shandong, China
  • Received:2017-03-28 Online:2017-06-15 Published:2017-06-15

Abstract:

In this paper, we consider the two-machine flow-shop scheduling with deterioration and rejection, in which each job's processing time is simple linear increasing function of its starting time. A job is either accepted and processed on the two machines in a flow-shop system,  or rejected with a certain penalty having to be paid. The objective is to minimize the sum of the makespan of the accepted jobs plus the total penalty of the rejected jobs. We show that the problem is NP-hard and present a dynamic programming algorithm. Furthermore, we propose an optimal schedule for one special case.

Key words: scheduling, flow-shop, deterioration, rejection, NP-hard