arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1906.09680cs.DS
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团数有界的图的独立集的常数摊时计数

Constant Amortized Time Enumeration of Independent Sets for Graphs with Bounded Clique Number

Kazuhiro Kurita, Kunihiro Wasa, Hiroki Arimura, Takeaki Uno

摘要:

在这项研究中,我们解决了独立集枚举问题。虽然已经提出了一些有效的枚举算法和仔细的分析,极大独立集,没有细粒度的分析已经给出了非极大变量。从主要结果出发,我们提出了一个在$O(q)$分摊时间和线性空间中运行的非极大变量的算法$\texttt{EIS}$,其中$q$是团数,即,输入图中团的最大大小。请注意,即使$q$的确切值未知,$\texttt{EIS}$也能正常工作。尽管它很简单,但$\texttt{EIS}$对于具有有界团数的图是最优的,例如,无三角形图,平面图,有界退化图,局部有界扩展图,以及对于任何固定图$F$的$F$-free图,其中$F$-free图是没有$F$的副本作为子图的图。

英文摘要:

In this study, we address the independent set enumeration problem. Although several efficient enumeration algorithms and careful analyses have been proposed for maximal independent sets, no fine-grained analysis has been given for the non-maximal variant. From the main result, we propose an algorithm $\texttt{EIS}$ for the non-maximal variant that runs in $O(q)$ amortized time and linear space, where $q$ is the clique number, i.e., the maximum size of a clique in an input graph. Note that $\texttt{EIS}$ works correctly even if the exact value of $q$ is unknown. Despite its simplicity, $\texttt{EIS}$ is optimal for graphs with a bounded clique number, such as, triangle-free graphs, planar graphs, bounded degenerate graphs, locally bounded expansion graphs, and $F$-free graphs for any fixed graph $F$, where a $F$-free graph is a graph that has no copy of $F$ as a subgraph.

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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