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Mim-Width II. The Feedback Vertex Set Problem

Jaffke, Lars; Kwon, O-Joung; Telle, Jan Arne
Peer reviewed, Journal article
Accepted version
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URI
https://hdl.handle.net/1956/22364
Date
2020
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  • Department of Informatics [545]
Original version
https://doi.org/10.1007/s00453-019-00607-3
Abstract
We give a first polynomial-time algorithm for (WEIGHTED) FEEDBACK VERTEX SET on graphs of bounded maximum induced matching width (mim-width). Explicitly, given a branch decomposition of mim-width w, we give an nO(w)-time algorithm that solves FEEDBACK VERTEX SET. This provides a unified polynomial-time algorithm for many well-known classes, such as INTERVAL graphs, PERMUTATION graphs, and LEAF POWER graphs (given a leaf root), and furthermore, it gives the first polynomial-time algorithms for other classes of bounded mim-width, such as CIRCULAR PERMUTATION and CIRCULAR k-TRAPEZOID graphs (given a circular k-trapezoid model) for fixed k. We complement our result by showing that FEEDBACK VERTEX SET is W[1]-hard when parameterized by w and the hardness holds even when a linear branch decomposition of mim-width w is given.
Description
Under embargo until: 2020-07-18
Publisher
Springer
Journal
Algorithmica
Copyright
Copyright 2019 Springer

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