arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1907.01700cs.DScs.DM
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基于交替循环的最短完美匹配重构

Shortest Reconfiguration of Perfect Matchings via Alternating Cycles

Takehiro Ito, Naonori Kakimura, Naoyuki Kamiyama, Yusuke Kobayashi, Yoshio Okamoto

摘要:

受完美匹配多面体邻接性的启发,研究了完美匹配多面体通过交替循环的最短重构问题。也就是说,我们希望找到一个最短的完美匹配序列,它将一个给定的完美匹配转换为另一个给定的完美匹配,使得每对连续完美匹配的对称差是一个循环。该问题等价于完美匹配多面体中的组合最短路问题。我们证明了即使给定的图是平面图或二部图,该问题也是NP-难的,但当图是外平面图时,该问题可以在多项式时间内求解。

英文摘要:

Motivated by adjacency in perfect matching polytopes, we study the shortest reconfiguration problem of perfect matchings via alternating cycles. Namely, we want to find a shortest sequence of perfect matchings which transforms one given perfect matching to another given perfect matching such that the symmetric difference of each pair of consecutive perfect matchings is a single cycle. The problem is equivalent to the combinatorial shortest path problem in perfect matching polytopes. We prove that the problem is NP-hard even when a given graph is planar or bipartite, but it can be solved in polynomial time when the graph is outerplanar.

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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