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arXiv 1005.5591cs.ITmath.IT
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关于Chebyshev距离下置换码的最小重量问题

On the minimum weight problem of permutation codes under Chebyshev distance

Min-Zheng Shieh, Shi-Chun Tsai

摘要:

长度为$n$且距离为$d$的置换码是$n$符号上的置换的集合,其中所述集合中的任何两个元素之间的距离至少为$d$。子群置换码是一类在复合运算下元素是闭的置换码。在距离度量$\ell_{\infty}$ -范数下,证明了寻找子群置换码的最小重量码字是NP-完全的。此外,我们表明,它是NP-困难的近似因子$7/6-ε$的任何$ε>0$内的最小重量。

英文摘要:

Permutation codes of length $n$ and distance $d$ is a set of permutations on $n$ symbols, where the distance between any two elements in the set is at least $d$. Subgroup permutation codes are permutation codes with the property that the elements are closed under the operation of composition. In this paper, under the distance metric $\ell_{\infty}$-norm, we prove that finding the minimum weight codeword for subgroup permutation code is NP-complete. Moreover, we show that it is NP-hard to approximate the minimum weight within the factor $7/6-ε$ for any $ε>0$.

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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