Oclets --- Scenario-Based Modeling with Petri Nets

  • Authors:
  • Dirk Fahland

  • Affiliations:
  • Institut für Informatik, Humboldt-Universität zu Berlin, Berlin, Germany 10099

  • Venue:
  • PETRI NETS '09 Proceedings of the 30th International Conference on Applications and Theory of Petri Nets
  • Year:
  • 2009

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Abstract

We present a novel, operational, formal model for scenario-based modeling with Petri nets. A scenario-based model describes the system behavior in terms of partial runs, called scenarios . This paradigm has been formalized in message sequence charts (MSCs) and live sequence charts (LSCs) which are in industrial and academic use. A particular application for scenarios are process models in disaster management where system behavior has to be adapted frequently, occasionally at run-time. An operational semantics of scenarios would allow to execute and adapt such systems on a formal basis. In this paper, we present a class of Petri nets for specifying and modeling systems with scenarios and anti-scenarios. We provide an operational semantics allowing to iteratively construct partially ordered runs that satisfy a given specification. We prove the correctness of our results.