A comparison of evaluation methods in coevolution

  • Authors:
  • Ting-Shuo Yo;Edwin D. de Jong

  • Affiliations:
  • Utrecht university, Utrecht, Netherlands;Utrecht university, Utrecht, Netherlands

  • Venue:
  • Proceedings of the 9th annual conference on Genetic and evolutionary computation
  • Year:
  • 2007

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Abstract

In this research, we compare four different evaluation meth-ods in coevolution on the Majority Function problem. Thesize of the problem is selected such that an evaluation againstall possible test cases is feasible. Two measures are usedfor the comparisons, i.e., the objective fitness derived fromevaluating solutions againt all test cases, and the objectivefitness correlation (OFC), which is defined as the correlationcoefficient between subjective and objective fitness. The re-sults of our experiments suggest that a combination of aver-age score and weighted informativeness may provide a moreaccurate evaluation in coevolution. In order to confirm thisdifference, a series of t-tests on the preference between eachpair of the evaluation methods is performed. The resultingsignificance is affirmative, and the tests for two quality mea-sures show similar preference on four evaluation methods.