Oclets
a formal approach to adaptive systems using scenario-based concepts
Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, Institut für Informatik
Usually, a component in a distributed system has assumptions about the remaining components of the system. A change in one component might require to change other components as well. It may happen that the change has to be performed in the running system. In this paper, we propose a formal model for systems that change their behaviour at run-time: An adaptive system is denoted as a set of scenarios using a Petri net syntax. Our operational model provides an adaptation operator that synthesizes and adapts the system behavior as a Petri net branching-process at run-time based on the given scenarios. We show the feasibility of our approach by the help of an example.
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