Clique-width is one of the graph complexity measures leading to polynomial
special-case algorithms for generally NP-complete problems, e.g. graph
colourability. The best two currently known algorithms for verifying
c-colourability of graphs represented as clique-width terms are optimised
towards two different extreme cases, a constant number of colours and a very
large number of colours. We present a way to unify these approaches in a single
relatively simple algorithm that achieves the state of the art complexity in
both cases. The unified algorithm also provides a speed-up for a large number
of colours.
%0 Journal Article
%1 courcelle2020unified
%A Courcelle, Bruno
%A Durand, Irène
%A Raskin, Michael
%D 2020
%K finiteautomata graphexploration informal preprint
%T A unified algorithm for colouring graphs of bounded clique-width.
%X Clique-width is one of the graph complexity measures leading to polynomial
special-case algorithms for generally NP-complete problems, e.g. graph
colourability. The best two currently known algorithms for verifying
c-colourability of graphs represented as clique-width terms are optimised
towards two different extreme cases, a constant number of colours and a very
large number of colours. We present a way to unify these approaches in a single
relatively simple algorithm that achieves the state of the art complexity in
both cases. The unified algorithm also provides a speed-up for a large number
of colours.
@article{courcelle2020unified,
abstract = {Clique-width is one of the graph complexity measures leading to polynomial
special-case algorithms for generally NP-complete problems, e.g. graph
colourability. The best two currently known algorithms for verifying
c-colourability of graphs represented as clique-width terms are optimised
towards two different extreme cases, a constant number of colours and a very
large number of colours. We present a way to unify these approaches in a single
relatively simple algorithm that achieves the state of the art complexity in
both cases. The unified algorithm also provides a speed-up for a large number
of colours.},
added-at = {2020-10-01T17:09:33.000+0200},
author = {Courcelle, Bruno and Durand, Irène and Raskin, Michael},
biburl = {https://www.bibsonomy.org/bibtex/2f79926892d9f772c6bdaa4398d7f6183/paves},
interhash = {3224afc57f268c925b20aa4a9cfad044},
intrahash = {f79926892d9f772c6bdaa4398d7f6183},
keywords = {finiteautomata graphexploration informal preprint},
note = {http://arxiv.org/abs/2008.07468},
timestamp = {2023-09-24T19:11:28.000+0200},
title = {A unified algorithm for colouring graphs of bounded clique-width.},
year = 2020
}