Yannick Pencolé and Marie-Odile Cordier and Laurence Rozé
A decentralized model-based diagnostic tool for complex systems
, ICTAI'01 (IEEE international conference on tools with artificial intelligence) , IEEE computer society , 95--102 , nov , 2001

Abstract We address the problem of diagnosing complex discrete-event systems such as telecommunication networks. Given a flow of observations from the system, the goal is to explain those observations by identifying and localizing possible faults. Several model-based diagnosis approaches deal with this problem but they need the computation of a global model which is not feasible for complex systems like telecommunication networks. Our contribution is the proposal of a decentralized approach which permits to carry out an on-line diagnosis without computing the global model. This paper describes the implementation of a tool based on this approach. Given a decentralized model of the system and a flow of observations, the program analyzes the flow and computes the diagnosis in a decentralized way. We also present experimental results based on a real system.


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