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A note on 'fully polynomial time approximation scheme for the total weighted tardiness minimization with a common due date'

机译:关于“具有共同到期日的总加权拖延最小化的完全多项式时间近似方案”的注释

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摘要

In this note, through a counter-example we show that the results in a recent paper (Kacem, 2010) [1] are incorrect. Since the proposed dynamic programming in Kacem (2010) [1] fails to optimally solve the problem in some instances, the designed FPTAS with O(n~2/ε) complexity is wrong. Then, we provide a modified FPTAS of O(n~3/ε) time complexity for the considered problem.
机译:在本说明中,通过一个反例,我们证明了最近一篇论文中的结果(Kacem,2010)[1]是不正确的。由于在某些情况下,Kacem(2010)[1]中提出的动态规划无法最佳地解决问题,因此设计的O(n〜2 /ε)复杂性FPTAS是错误的。然后,针对所考虑的问题,我们提供了O(n〜3 /ε)时间复杂度的改进FPTAS。

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