Séminaires DO

Organisation : Carine Jauberthie - Lieu habituel : salle EUROPE du LAAS

Le département DO fédère les activités de recherche de trois équipes de recherche du LAAS: Diagnostic Supervision et Conduite, Méthodes et Algorithmes en Commande, Recherche Opérationnelle/Optimisation Combinatoire/Contraintes.

A venir

Jeudi 6 Février 2020 - 14h - Salle Tourmalet

Marina Zanella : "Dual knowledge compilation in diagnosis durong monitoring of discrete-event systems"

A discrete-event system (DES) is an abstraction of a dynamical system that can be exploited for diagnostic purposes. The task of diagnosis during monitoring, upon the perception of each observation relevant to a DES, has to generate a set of candidates, a candidate being a set of faults: such a process requires costly model-based reasoning. Knowledge compilation techniques have been proposed in the literature in order to speed up online reasoning. In this presentation, to avoid the offline compilation of the whole knowledge inherent to the DES, a diagnosis method that performs a partial knowledge compilation is proposed. Every time a sequence of observations considered online is not encompassed by the compiled knowledge, such knowledge is permanently extended so as, if the same diagnosis problem arises anew, then it will be solved efficiently. The compiled data structure can also be enhanced by specialized knowledge coming from scenarios, which are behavioral patterns of ! the DES that need to be diagnosed quickly. 

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