Approximating maximum uniquely restricted matchings in bipartite graphs
Approximating maximum uniquely restricted matchings in bipartite graphs
复制标题
近似二分图中的最大唯一限制匹配
DOI:
10.1016/j.dam.2019.04.024
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
I. Sau
中科院分区:
文献类型:
--
作者:
J. Baste;D. Rautenbach;I. Sau
A matching in a graph is uniquely restricted if no other matching covers exactly the same set of vertices. This notion was defined by Golumbic, Hirst, and Lewenstein (2001) and studied in a number of articles. We provide approximation algorithms for computing a uniquely restricted matching of maximum size in some bipartite graphs, namely those excluding a C 4 or with maximum degree at most three. In particular, we achieve a ratio of 5∕ 9 for subcubic bipartite graphs, improving over a 1∕ 2-approximation algorithm proposed by Mishra (2011).
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DOI:
--
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2005
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