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arXiv 1709.05751cs.DScs.DM
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单机加权拖期工件数最小化的新算法

New Algorithms for Minimizing the Weighted Number of Tardy Jobs On a Single Machine

Danny Hermelin, Shlomo Karhi, Mike Pinedo, Dvir Shabtay

摘要:

本文研究了目标函数为最小化拖期工件总重量的经典单机排序问题。我们的分析集中在三个自然参数中的一个或多个是常数或被视为参数化复杂性意义上的参数的情况下。这三个参数是输入作业集中不同到期日的数量、处理时间和权重。我们表明,该问题属于固定参数易处理(FPT)的问题时,结合这三个参数中的任何两个。我们还表明,当后两个参数是常数时,问题是多项式时间可解的,补充了Karp的结果,该结果表明,该问题是NP-困难的已经为一个单一的到期日。

英文摘要:

In this paper we study the classical single machine scheduling problem where the objective is to minimize the total weight of tardy jobs. Our analysis focuses on the case where one or more of three natural parameters is either constant or is taken as a parameter in the sense of parameterized complexity. These three parameters are the number of different due dates, processing times, and weights in our set of input jobs. We show that the problem belongs to the class of fixed parameter tractable (FPT)problems when combining any two of these three parameters. We also show that the problem is polynomial-time solvable when the latter two parameters are constant, complementing Karp's result who showed that the problem is NP-hard already for a single due date.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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