TY - CONF T1 - Graph Colouring Heuristics Guided by Higher Order Graph Properties T2 - Lecture Notes in Computer Science Y1 - 2008 A1 - Juhos, Istv\'{a}n A1 - van Hemert, Jano ED - van Hemert, Jano ED - Cotta, Carlos KW - evolutionary computation KW - graph colouring AB - Graph vertex colouring can be defined in such a way where colour assignments are substituted by vertex contractions. We present various hyper-graph representations for the graph colouring problem all based on the approach where vertices are merged into groups. In this paper, we show this provides a uniform and compact way to define algorithms, both of a complete or a heuristic nature. Moreover, the representation provides information useful to guide algorithms during their search. In this paper we focus on the quality of solutions obtained by graph colouring heuristics that make use of higher order properties derived during the search. An evolutionary algorithm is used to search permutations of possible merge orderings. JF - Lecture Notes in Computer Science PB - Springer VL - 4972 ER -