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arXiv 1802.07863cs.DS
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稀疏图控制集的有效计数

Efficient Enumeration of Dominating Sets for Sparse Graphs

Kazuhiro Kurita, Kunihiro Wasa, Hiroki Arimura, Takeaki Uno

摘要:

图$G$的支配集$D$是一组顶点,使得$G$中的任何顶点都在$D$中,或者它的邻居在$D$中。图的最小控制集的计数是计数研究的中心问题之一,因为最小控制集的计数对应于最小超图断面的计数。然而,包括非最小控制集在内的控制集的计数问题却没有得到足够的重视。本文研究了稀疏图(退化图和大围长图)的控制集的计数问题,并提出了两个算法。第一个算法是在$O(n + m)$空间上,每解在$O(k)$时间内枚举$k$ -退化图的所有控制集,其中$n$和$m$分别是输入图的顶点数和边数.也就是说,该算法是最优的图具有常数退化,如树,平面图,$H$ -子自由图与一些固定的$H$。第二个算法在恒定的时间内枚举所有的控制集,每个解决方案的输入图围长至少为9。

英文摘要:

A dominating set $D$ of a graph $G$ is a set of vertices such that any vertex in $G$ is in $D$ or its neighbor is in $D$. Enumeration of minimal dominating sets in a graph is one of central problems in enumeration study since enumeration of minimal dominating sets corresponds to enumeration of minimal hypergraph transversal. However, enumeration of dominating sets including non-minimal ones has not been received much attention. In this paper, we address enumeration problems for dominating sets from sparse graphs which are degenerate graphs and graphs with large girth, and we propose two algorithms for solving the problems. The first algorithm enumerates all the dominating sets for a $k$-degenerate graph in $O(k)$ time per solution using $O(n + m)$ space, where $n$ and $m$ are respectively the number of vertices and edges in an input graph. That is, the algorithm is optimal for graphs with constant degeneracy such as trees, planar graphs, $H$-minor free graphs with some fixed $H$. The second algorithm enumerates all the dominating sets in constant time per solution for input graphs with girth at least nine.

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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