Abstract
In this paper, we introduce and study three graph modification problems: 2-Club Cluster Vertex Deletion, 2-Club Cluster Edge Deletion, and 2-Club Cluster Editing. In 2-Club Cluster Vertex Deletion (2-Club Cluster Edge Deletion, and 2-Club Cluster Editing), one is given an undirected graph G and an integer k ≥ 0, and needs to decide whether it is possible to transform G into a 2-club cluster graph by deleting at most k vertices (by deleting at most k edges, and by deleting and adding totally at most k edges). Here, a 2-club cluster graph is a graph in which every connected component is of diameter 2. We first prove that all these three problems are NP-complete. Then, we present for 2-Club Cluster Vertex Deletion a fixed parameter algorithm with running time O ∗ (3.31k), and for 2-Club Cluster Edge Deletion a fixed parameter algorithm with running time O ∗ (2.74k).
Research supported by the National Natural Science Foundation of China (61070019) and the National Natural Science Foundation of China (60603007).
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Liu, H., Zhang, P., Zhu, D. (2012). On Editing Graphs into 2-Club Clusters. In: Snoeyink, J., Lu, P., Su, K., Wang, L. (eds) Frontiers in Algorithmics and Algorithmic Aspects in Information and Management. Lecture Notes in Computer Science, vol 7285. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-29700-7_22
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DOI: https://doi.org/10.1007/978-3-642-29700-7_22
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