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arXiv 2401.01740cs.DScs.CC
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最小化加权延迟作业数量是 W[1]-困难的

Minimizing the Weighted Number of Tardy Jobs is W[1]-hard

Klaus Heeger, Danny Hermelin

AI总结:

本文研究了单机上最小化加权延迟作业数量的问题,证明了该问题关于输入中不同处理时间数量和不同权重数量均为 W[1]-困难的,从而在参数化复杂度和指数时间假设下给出了完整的复杂度图景与几乎紧致的界。

摘要:

我们考虑 $1||\sum w_J U_j$ 问题,即在单机上最小化加权延迟作业数量的问题。该问题是调度理论中最基本和最基础的问题之一,在理论和实践中都有多种不同的应用。我们证明 $1||\sum w_J U_j$ 问题关于输入中不同处理时间的数量 $p_{\\#}$ 是 W[1]-困难的,同时关于输入中不同权重的数量 $w_{\\#}$ 也是 W[1]-困难的。结合先前的研究,这为 $1||\sum w_J U_j$ 问题从参数化复杂度的角度提供了完整的图景,并在指数时间假设(ETH)下为该问题提供了几乎紧致的复杂度下界。

英文摘要:

We consider the $1||\sum w_J U_j$ problem, the problem of minimizing the weighted number of tardy jobs on a single machine. This problem is one of the most basic and fundamental problems in scheduling theory, with several different applications both in theory and practice. We prove that $1||\sum w_J U_j$ is W[1]-hard with respect to the number $p_{\#}$ of different processing times in the input, as well as with respect to the number $w_{\#}$ of different weights in the input. This, along with previous work, provides a complete picture for $1||\sum w_J U_j$ from the perspective of parameterized complexity, as well as almost tight complexity bounds for the problem under the Exponential Time Hypothesis (ETH).

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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