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Activity Regions in Discrete-Event Systems

Alexandre Muzy, Luc Touraille, Hans Vangheluwe, Olivier Michel, David R.C. Hill and Mamadou Kaba Traoré

Symposium on Theory of Modeling and Simulation (DEVS'10) (DEVS 2010)
Orlando, ON, April 11-15 2010


The common view on modeling and simulation of dy- namical systems is to focus on the specication of the state of the system and its transition function. Although some interesting challenges remain to e- ciently and elegantly support this view, we consider in this paper that this problem is solved. Instead, we propose here to focus on a new point of view on dy- namical systems, starting from the activity exhibited by their simulation. We believe that such a view- point allows a precise analysis, comparison, classi- cation as well as a more faithful and ecient modeling and simulation of the phenomenon under study. We rst start by the denition of the key notion of ac- tivity in a specic class of dynamical system, namely discrete-event systems. Then, we rene this notion to charaterize activity regions in time, in space and in hierarchical component-based models. Examples are given to illustrate and stress the importance of this notion.

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