Finding a maximum induced degenerate subgraph faster than 2n

  • Authors:
  • Marcin Pilipczuk;Michał Pilipczuk

  • Affiliations:
  • Institute of Informatics, University of Warsaw, Poland;Department of Informatics, University of Bergen, Norway

  • Venue:
  • IPEC'12 Proceedings of the 7th international conference on Parameterized and Exact Computation
  • Year:
  • 2012

Quantified Score

Hi-index 0.00

Visualization

Abstract

In this paper we study the problem of finding a maximum induced d-degenerate subgraph in a given n-vertex graph from the point of view of exact algorithms. We show that for any fixed d one can find a maximum induced d-degenerate subgraph in randomized $(2-\varepsilon _d)^nn^{\mathcal{O}(1)}$ time, for some constant εd0 depending only on d. Moreover, our algorithm can be used to sample inclusion-wise maximal induced d-degenerate subgraphs in such a manner that every such subgraph is output with probability at least (2−εd)−n; hence, we prove that their number is bounded by (2−εd)n.