A non-adaptive stochastic local search algorithm for the CHeSC 2011 competition

  • Authors:
  • Franco Mascia;Thomas Stützle

  • Affiliations:
  • IRIDIA - Université Libre de Bruxelles, Belgium;IRIDIA - Université Libre de Bruxelles, Belgium

  • Venue:
  • LION'12 Proceedings of the 6th international conference on Learning and Intelligent Optimization
  • Year:
  • 2012

Quantified Score

Hi-index 0.00

Visualization

Abstract

In this work, we present our submission for the Cross-domain Heuristic Search Challenge 2011. We implemented a stochastic local search algorithm that consists of several algorithm schemata that have been offline-tuned on four sample problem domains. The schemata are based on all families of low-level heuristics available in the framework used in the competition with the exception of crossover heuristics. Our algorithm goes through an initial phase that filters dominated low-level heuristics, followed by an algorithm schemata selection implemented in a race. The winning schema is run for the remaining computation time. Our algorithm ranked seventh in the competition results. In this paper, we present the results obtained after a more careful tuning, and a different combination of algorithm schemata included in the final algorithm design. This improved version would rank fourth in the competition.