An O*(1.1939n) Time Algorithm for Minimum Weighted Dominating Induced Matching

被引:0
|
作者
Min Chih Lin [1 ]
Mizrahi, Michel J. [1 ]
Szwarcfiter, Jayme L. [2 ]
机构
[1] Univ Buenos Aires, CONICET, Inst Calculo, Buenos Aires, DF, Argentina
[2] Univ Fed Rio de Janeiro, COPPE, NCE, BR-21945 Rio De Janeiro, Brazil
来源
ALGORITHMS AND COMPUTATION | 2013年 / 8283卷
关键词
exact algorithms; dominating induced matchings; branch & reduce; EFFICIENT EDGE DOMINATION; GRAPHS;
D O I
暂无
中图分类号
TP301 [理论、方法];
学科分类号
081202 ;
摘要
Say that an edge of a graph G dominates itself and every other edge sharing a vertex of it. An edge dominating set of a graph G = (V, E) is a subset of edges E' subset of E which dominates all edges of G. In particular, if every edge of G is dominated by exactly one edge of E' then E' is a dominating induced matching. It is known that not every graph admits a dominating induced matching, while the problem to decide if it does admit it is NP-complete. In this paper we consider the problems of finding a minimum weighted dominating induced matching, if any, and counting the number of dominating induced matchings of a graph with weighted edges. We describe an exact algorithm for general graphs that runs in O*(1.1939(n)) time and polynomial (linear) space, for solving these problems. This improves over the existing exact algorithms for the problems in consideration.
引用
收藏
页码:558 / 567
页数:10
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