Parameterized Complexity of Induced H-Matching on Claw-Free Graphs

Danny Hermelin, Matthias Mnich, Erik Jan van Leeuwen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingAcademicpeer-review


The induced h -matching problem asks to find k disjoint, induced subgraphs isomorphic to h in a given graph g such that there are no edges between vertices of different subgraphs. This problem generalizes amongst others the classical independent set and induced matching problems. We show that induced h -matching is fixed-parameter tractable in k on claw-free graphs when h is a fixed connected graph of constant size, and even admits a polynomial kernel when h is a clique. Both results rely on a new, strong algorithmic structure theorem for claw-free graphs. To show the fixed-parameter tractability of the problem, we additionally apply the color-coding technique in a nontrivial way. Complementing the above two positive results, we prove the w[1]-hardness of induced h -matching for graphs excluding k 1,4 as an induced subgraph. In particular, we show that independent set is w[1]-hard on k 1,4-free graphs.
Original languageEnglish
Title of host publicationAlgorithms - ESA 2012
Subtitle of host publication20th Annual European Symposium Ljubljana, Slovenia, September 2012 Proceedings
EditorsLeah Epstein, Paolo Ferragina
ISBN (Electronic)978-3-642-33090-2
ISBN (Print)978-3-642-33089-6
Publication statusPublished - 2012
Externally publishedYes

Publication series

SeriesLecture Notes in Computer Science

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