Maximum weight independent sets in hole- and dart-free graphs

Basavaraju, M and Chandran, LS and Karthick, T (2012) Maximum weight independent sets in hole- and dart-free graphs. In: Discrete Applied Mathematics, 160 (16-17). pp. 2364-2369.

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Abstract

The Maximum Weight Independent Set (MWIS) problem on graphs with vertex weights asks for a set of pairwise nonadjacent vertices of maximum total weight. The complexity of the MWIS problem for hole-free graphs is unknown. In this paper, we first prove that the MWIS problem for (hole, dart, gem)-free graphs can be solved in O(n(3))-time. By using this result, we prove that the MWIS problem for (hole, dart)-free graphs can be solved in O(n(4))-time. Though the MWIS problem for (hole, dart, gem)-free graphs is used as a subroutine, we also give the best known time bound for the solvability of the MWIS problem in (hole, dart, gem)-free graphs. (C) 2012 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	Discrete Applied Mathematics
Publisher:	Elsevier Science
Additional Information:	Copyright for this article is belongs to Elsevier Science.
Keywords:	Graph algorithms;Maximum weight independent set problem; Clique separators;Hole-free graphs
Department/Centre:	Division of Electrical Sciences > Computer Science & Automation
Date Deposited:	10 Dec 2012 08:47
Last Modified:	10 Dec 2012 08:47
URI:	http://eprints.iisc.ac.in/id/eprint/45222

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