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arXiv 2009.04567cs.DS
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各种配对

Diverse Pairs of Matchings

Fedor V. Fomin, Petr A. Golovach, Lars Jaffke, Geevarghese Philip, Danil Sagunov

摘要:

本文首先研究了给定图$G$和整数$k$的多样(最大/最佳)匹配对问题,即$G$是否有两个对称差至少为$k$的(最大/最佳)匹配对.如果$k$是输入的一部分,则多样匹配对(要求两个不一定是最大或完美匹配)在一般图上是NP完全的,并且我们考虑两个限制变体。首先,我们证明了在二分图上,这个问题是多项式时间可解的,其次,我们证明了最大匹配的不同对是由$k$参数化的FPT。我们圆满的工作表明,不同的配对有一个内核的$\mathcal{O}(k^2)$顶点。

英文摘要:

We initiate the study of the Diverse Pair of (Maximum/ Perfect) Matchings problems which given a graph $G$ and an integer $k$, ask whether $G$ has two (maximum/perfect) matchings whose symmetric difference is at least $k$. Diverse Pair of Matchings (asking for two not necessarily maximum or perfect matchings) is NP-complete on general graphs if $k$ is part of the input, and we consider two restricted variants. First, we show that on bipartite graphs, the problem is polynomial-time solvable, and second we show that Diverse Pair of Maximum Matchings is FPT parameterized by $k$. We round off the work by showing that Diverse Pair of Matchings has a kernel on $\mathcal{O}(k^2)$ vertices.

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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