Non Expansive ε-Bisimulations

  • Authors:
  • Simone Tini

  • Affiliations:
  • Dipartimento di Scienze della Cultura, Politiche e dell'Informazione, Università dell'Insubria, Como, Italy

  • Venue:
  • AMAST 2008 Proceedings of the 12th international conference on Algebraic Methodology and Software Technology
  • Year:
  • 2008

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Abstract

ε-bisimulationequivalence has been proposed inthe literature as a technique to study the concept ofbehavioral distancebetween probabilistic processes. Inthis paper we consider also two stronger equivalences:action¿-bisimulation and global¿-bisimulation. For each of these three equivalencenotions we propose an SOS transition rule format ensuring theproperty of non-expansiveness. Non-expansiveness meansthat if the behavioral distance between siand tiisεi, then the behavioraldistance between f(s1,...,sn) and f(t1,...,tn) is no more thatε1+ ... + εn. As expected, the stronger theε-bisimulation considered, the (slightly) weakerthe constraints of the transition rule format.