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This paper gives an overview of LOTOS-based semantics for compositional UML statecharts. The purpose of this work is to develop a description of a UML statechart model using one of the formal description language - LOTOS.Our approach concentrate on two aspects of the statechart model: concurrency and compositionality. We are using a full LOTOS version to define micro-step semantics which allows to implement cross-state boundaries transitions. Based on the translation function we are able to use a formal statechart model to check the equivalence relations and other model checking techniques.
Date of Conference: 1-5 July 2008