Is the triple parameter hypothesis generalizable

  • Authors:
  • John M. Crofford

  • Affiliations:
  • Southern Nazarene University, Bethany, OK, USA

  • Venue:
  • Proceedings of the 12th annual conference companion on Genetic and evolutionary computation
  • Year:
  • 2010

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Abstract

A method for identifying values for a genetic algorithm's probability of crossover, mutation rate, and selection pressure that promote the evolution of better results in fewer generations has recently been proposed. This approach, termed the Triple Parameter Hypothesis (TPH), derives these values from schema theory. However, the experiments previously used to test the hypothesis used schema distances that were the extreme ends of the spectrum. In the work presented here, we evaluate the parameters predicted by the hypothesis in a series of maintenance scheduling experiments which use schema distances in between these extremes. Results show that evolutionary runs which use parameters that satisfy the hypothesis statistically significantly outperform runs that use parameters that do not satisfy the hypothesis.