Using bisimulations for optimality problems in model refinement

  • Authors:
  • Roland Glück

  • Affiliations:
  • Institut für Informatik, Universität Augsburg, Augsburg, Germany

  • Venue:
  • RAMICS'11 Proceedings of the 12th international conference on Relational and algebraic methods in computer science
  • Year:
  • 2011

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Abstract

A known generic strategy for handling large transition systems is the combined use of bisimulations and refinement. The idea is to reduce a large system by means of a bisimulation quotient into a smaller one, then to refine the smaller one in such way that it fulfils a desired property, and then to expand this refined system back into a submodel of the original one. This generic algorithm is not guaranteed to work correctly for every desired property; here we show its correctness for a class of optimality problems which can be described in the framework of dioids.