An improved ant colony optimisation heuristic for graph colouring

  • Authors:
  • Kathryn A. Dowsland;Jonathan M. Thompson

  • Affiliations:
  • Gower Optimal Algorithms Ltd. and Nottingham University, UK;School of Mathematics, Cardiff University, Cardiff, CF24 4AG, UK

  • Venue:
  • Discrete Applied Mathematics
  • Year:
  • 2008

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Abstract

The focus of this paper is an ant colony optimisation heuristic for the graph colouring problem. We start by showing how a series of improvements enhance the performance of an existing ant colony approach to the problem and then go on to demonstrate that a further strengthening of the construction phase, combined with a tabu search improvement phase, raise the performance to the point where it is able to compete with some of the best-known approaches on a series of benchmark problems.