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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1209.6570math.COcs.DM
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随机三次图上求大2-匹配的贪婪算法

A greedy algorithm for finding a large 2-matching on a random cubic graph

Deepak Bal, Patrick Bennett, Tom Bohman, Alan Frieze

摘要:

图$G$的2-匹配是最大度为2的生成子图。2-匹配$U$的大小是$U$中的边的数量,并且这至少是$n-\k(U)$,其中$n$是$G$的顶点的数量,并且$\k$表示分量的数量。在本文中,我们分析了一个贪婪算法\textsc{2greedy}的性能,寻找一个随机3-正则图上的大2-匹配。我们证明,以高概率,该算法输出一个2-匹配的$U$与$\k(U) = \tildeΘ\of{n^{1/5}}$。

英文摘要:

A 2-matching of a graph $G$ is a spanning subgraph with maximum degree two. The size of a 2-matching $U$ is the number of edges in $U$ and this is at least $n-\k(U)$ where $n$ is the number of vertices of $G$ and $\k$ denotes the number of components. In this paper, we analyze the performance of a greedy algorithm \textsc{2greedy} for finding a large 2-matching on a random 3-regular graph. We prove that with high probability, the algorithm outputs a 2-matching $U$ with $\k(U) = \tildeΘ\of{n^{1/5}}$.

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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