Operations Research Transactions ›› 2026, Vol. 30 ›› Issue (1): 179-187.doi: 10.15960/j.cnki.issn.1007-6093.2026.01.012

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Single-machine online scheduling with NDP constraint and deterioration

MENG Lanmeng1, MA Ran1,†, ZHANG Yuzhong2   

  1. 1. School of Management Engineering, Qingdao University of Technology, Qingdao 266525, Shandong, China;
    2. Institute of Operations Research, Qufu Normal University, Rizhao 276826, Shandong, China
  • Received:2022-12-20 Published:2026-03-16

Abstract: This paper studies the single machine online production scheduling with non-delayed processing (NDP) constraint as well as deterioration. Jobs arriving over time on-line are processed non-preemptive on machine. The model of job processing time is $p_{j}=a+b_{j}t (a>0$). Its objective is to minimize the maximum weighted completion time. Firstly, we derive the lower bound of the considered problem is $1+b_{\max}$ by means of adversary method. Then we design a online algorithm with the competitive ratio of $2+b_{\max}$. Moreover, these online models are simulated to verify the effectiveness and correctness of online algorithm.

Key words: NDP constraint, deterioration, single machine, online scheduling, maximum weighted completion time

CLC Number: