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arXiv 1303.0035cs.DScs.DM
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最小权支配诱导匹配的$O^*(1.1939^n)$时间算法

An $O^*(1.1939^n)$ time algorithm for minimum weighted dominating induced matching

Min Chih Lin, Michel J. Mizrahi, Jayme L. Szwarcfiter

摘要:

假设图$G$的一条边支配它自己和与它相邻的所有边,图$G=(V,E)$的一个边支配集是支配$G$的所有边的边的子集$E' \subseteq E$。特别地,如果$G$的每条边恰好被$E'$的一条边支配,则$E'$是支配诱导匹配。已知不是每个图都允许支配诱导匹配,而判定它是否允许支配诱导匹配的问题是NP-完全的。本文研究了带权边图的最小权控制诱导匹配的求法和控制诱导匹配的计数问题。我们描述了一个精确的算法,运行在$O^*(1.1939^n)$时间和多项式(线性)空间的一般图形。这改进了任何现有的精确算法的问题考虑。

英文摘要:

Say that an edge of a graph $G$ dominates itself and every other edge adjacent to it. An edge dominating set of a graph $G=(V,E)$ is a subset of edges $E' \subseteq E$ which dominates all edges of $G$. In particular, if every edge of $G$ is dominated by exactly one edge of $E'$ then $E'$ is a dominating induced matching. It is known that not every graph admits a dominating induced matching, while the problem to decide if it does admit it is NP-complete. In this paper we consider the problems of finding a minimum weighted dominating induced matching, if any, and counting the number of dominating induced matchings of a graph with weighted edges. We describe an exact algorithm for general graphs that runs in $O^*(1.1939^n)$ time and polynomial (linear) space. This improves over any existing exact algorithm for the problems in consideration.

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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