Operations Research Transactions ›› 2025, Vol. 29 ›› Issue (1): 31-40.doi: 10.15960/j.cnki.issn.1007-6093.2025.01.003

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Single two-agent scheduling problems with slack due date to minimize the total weighted tardiness

Tongxin CUI1, Qian XIA1, Xingong ZHANG1,*()   

  1. 1. School of Mathematical Sciences, Chongqing Normal University, Chongqing 401331, China
  • Received:2021-07-13 Online:2025-03-15 Published:2025-03-08
  • Contact: Xingong ZHANG E-mail:zhangxingong@cqnu.edu.cn

Abstract:

This paper studies the scheduling problems with two competing agents on a single machine to minimize the total weighted tardiness under slack due date, where the slack due date of the job is equal to its actual processing time plus a certain slack variable. It includes two models: the first model is to minimize the total weighted tardiness of the first agent under the condition that the total number of tardiness jobs of the second agent does not exceed a given value; the second model is to minimize the total weighted tardiness of the first agent that the total completion time of the second agent does not exceed a given value. The optimal properties are given by dynamic programming. The pseudo-polynomial time algorithm and its time complexity is presented. Finally, two experiment examples are given to illustrate the feasibility of the algorithm.

Key words: scheduling, two-agent, total weighted tardiness, dynamical programming algorithm

CLC Number: