A better constant-factor approximation for weighted dominating set in unit disk graph
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贝壳书屋 A better constant-factor approximation for weighted dominating set in unit disk graph 电子书下载

A better constant-factor approximation for weighted dominating set in unit disk graph 电子书下载

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书名：A better constant-factor approximation for weighted dominating set in unit disk graph

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This paper presents a (10 + ε)-approximation algorithm to compute minimum-weight connected dominating set (MWCDS) in unit disk graph. MWCDS is to select a vertex subset with minimum weight for a given unit disk graph, such that each vertex of the graph is contained in this subset or has a neighbor in this subset. Besides, the subgraph induced by this vertex subset is connected. Our algorithm is composed of two phases: the first phase computes a dominating set, which has approximation ratio 6 + ε (ε is an arbitrary positive number), while the second phase connects the dominating sets computed in the first phase, which has approximation ratio 4.

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