Genetic algorithms in optimizing simulated systems

  • Authors:
  • George Tompkins;Farhad Azadivar

  • Affiliations:
  • Department of Industrial and Manufacturing Systems Engineering, Kansas State University, Manhattan, Kansas;Department of Industrial and Manufacturing Systems Engineering, Kansas State University, Manhattan, Kansas

  • Venue:
  • WSC '95 Proceedings of the 27th conference on Winter simulation
  • Year:
  • 1995

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Abstract

Advances have been made in optimizing quantitative variables within a simulation model, and many methodologies now exist for this purpose. However, many of the design decisions which confront a system's users involve policy alternatives. Often, variables used to represent these alternatives are not only discrete but qualitative. This work seeks to develop a simulation-optimization methodology which can operate on qualitative variables. The proposed approach is to link a genetic algorithm with an object-oriented simulation model generator. The system designs recommended by the genetic algorithm are converted to simulation models and executed. The results then guide the genetic algorithm in its selection of future designs. A simulation model generator for a class of manufacturing systems and a genetic algorithm which can interface with the generator have been developed. The methodology has shown positive results.