Complexity and algorithms for the connected vertex cover problem in 4-regular graphs
Complexity and algorithms for the connected vertex cover problem in 4-regular graphs
复制标题
4-正则图中连通顶点覆盖问题的复杂度和算法
DOI:
10.1016/j.amc.2016.12.004
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Wei Wang
中科院分区:
文献类型:
--
作者:
Yuchao Li;Zishen Yang;Wei Wang
In the connected vertex cover (CVC) problem, we are given a connected graph G and required to find a vertex cover set C with minimum cardinality such that the induced subgraph G [C] is connected. In this paper, we restrict our attention to the CVC problem in 4-regular graphs. We proved that the CVC problem is still NP-hard for 4-regular graphs and gave a lower bound for the problem. Moreover, we proposed two approximation algorithms for CVC problem with approximation ratio 3 2 and 4 3+ O (1 n), respectively.
DOI:
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发表时间:
2004
期刊:
Information Processing Letters 90
影响因子:
--
作者:
Fujito;T.;Doi;T.
通讯作者:
T.