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Feedback Vertex Set Inspired Kernel for Chordal Vertex Deletion

Feedback Vertex Set Inspired Kernel for Chordal Vertex Deletion Given a graph G and a parameter k, the Chordal Vertex Deletion (CVD) problem asks whether there exists a subset U V(G) of size at most k that hits all induced cycles of size at least 4. The existence of a polynomial kernel for CVD was a well-known open problem in the field of Parameterized Complexity. Recently, Jansen and Pilipczuk resolved this question affirmatively by designing a polynomial kernel for CVD of size O (k161 log58k) and asked whether one can design a kernel of size O (k10) Jansen an Pilipczuk, SODA 2017. While we do not completely resolve this question, we design a significantly smaller kernel of size O (k12 log10k), inspired by the O (k2) -size kernel for Feedback Vertex Set Thomassé, TALG 2010. Furthermore, we introduce the notion of the independence degree of a vertex, which is our main conceptual contribution. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png ACM Transactions on Algorithms (TALG) Association for Computing Machinery

Feedback Vertex Set Inspired Kernel for Chordal Vertex Deletion

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Publisher
Association for Computing Machinery
Copyright
Copyright © 2018 ACM
ISSN
1549-6325
eISSN
1549-6333
DOI
10.1145/3284356
Publisher site
See Article on Publisher Site

Abstract

Given a graph G and a parameter k, the Chordal Vertex Deletion (CVD) problem asks whether there exists a subset U V(G) of size at most k that hits all induced cycles of size at least 4. The existence of a polynomial kernel for CVD was a well-known open problem in the field of Parameterized Complexity. Recently, Jansen and Pilipczuk resolved this question affirmatively by designing a polynomial kernel for CVD of size O (k161 log58k) and asked whether one can design a kernel of size O (k10) Jansen an Pilipczuk, SODA 2017. While we do not completely resolve this question, we design a significantly smaller kernel of size O (k12 log10k), inspired by the O (k2) -size kernel for Feedback Vertex Set Thomassé, TALG 2010. Furthermore, we introduce the notion of the independence degree of a vertex, which is our main conceptual contribution.

Journal

ACM Transactions on Algorithms (TALG)Association for Computing Machinery

Published: Dec 8, 2018

Keywords: Chordal vertex deletion

References