Robustness of Isotropic Stable Mutations in a General Search Space

  • Authors:
  • Przemysław Prętki;Andrzej Obuchowicz

  • Affiliations:
  • University of Zielona Góra, Zielona Góra, Poland 65-001;University of Zielona Góra, Zielona Góra, Poland 65-001

  • Venue:
  • ICAISC '08 Proceedings of the 9th international conference on Artificial Intelligence and Soft Computing
  • Year:
  • 2006

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Abstract

One of the most serious problem concerning global optimization methods is their correct configuration. Usually algorithms are described by some number of external parameters for which optimal values strongly depend on the objective function. If there is a lack of knowledge on the function under consideration the optimization algorithms can by adjusted using trail-and-error method. Naturally, this kind of approach gives rise to many computational problems. Moreover, it can be applied only when a lot of function evaluations is allowed. In order to avoid trial-and-error method it is reasonable to use an optimization algorithm which is characterized by the highest degree of robustness according to the variations in its control parameters. In this paper, the robustness issue of evolutionary strategy with isotropic stable mutations is discussed. The experimental simulations are conducted with the help of special search environment - the so-called general search space.