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On Counting Parameterized Matching and Packing

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Frontiers in Algorithmics (FAW 2016)

Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 9711))

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Abstract

In this paper, we first show that the complexity of parameterized m-set packing (resp. m-d matching) counting is \(\sharp \)W[1]-hard by a reduction from parameterized graph (resp. bipartite graph) matching counting \((m\ge 3)\). Subsequently, based on the algorithm for 3-d matching counting, we develop fixed-parameter tractable randomized approximation schemes (FPTRAS) for m-set packing counting, m-d matching counting, and bipartite graph matching counting, respectively. Our results indicate that parameterized m-set packing counting and m-d matching counting are typical examples that are \(\sharp \)W[1]-hard but admit FPTRAS. Furthermore, we show that edge disjoint subgraph packing counting, i.e., a special subgraph counting problem parameterized by the size of the packing, admits FPTRAS even if some of the counted subgraphs don’t have bounded treewidth.

This research was supported in part by the National Natural Science Foundation of China under Grants 61572190, 61232001, and 61420106009.

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Notes

  1. 1.

    Note that in these problems, m is a constant rather than a parameter.

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Acknowledgments

We are grateful to the anonymous referees for helpful suggestions that improve the presentation of this paper.

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Correspondence to Jianxin Wang .

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Liu, Y., Wang, J. (2016). On Counting Parameterized Matching and Packing. In: Zhu, D., Bereg, S. (eds) Frontiers in Algorithmics. FAW 2016. Lecture Notes in Computer Science(), vol 9711. Springer, Cham. https://doi.org/10.1007/978-3-319-39817-4_13

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  • DOI: https://doi.org/10.1007/978-3-319-39817-4_13

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