Artificial Intelligence
Laboratory

Diagnosis Group

The Diagnosis group is concerned with the following main research topics:

Functional diagnosis. Proposal, extensions. and application of the FDef (Functional Diagnosis with efforts and flows) approach.
Diagnosis of hydraulic systems. Application of model-based diagnosis techniques to marine technical systems (in particular, the heavy fuel oil transfer system of a ship).
Diagnostic reasoning about qualitative deviations. Exploitation of a 3-valued quantity space (too low, nominal, too high) for model-based diagnosis.
Diagnostic reasoning at multiple granularities. Techniques for organizing a model into different levels of granularity and translating observations and diagnostic conclusions among them.
Diagnosis based on multiple models. Representation and reasoning about symptoms and faults with different types of knowledge (structural,behavioral, functional, and teleological).

MAIN PUBLICATIONS:

Chittaro L., Ranon R. "Augmenting the diagnostic power of flow-based approaches to functional reasoning". Proceedings of AAAI-96: 13th Conference of the American Association for Artificial Intelligence, Portland, OR, USA, AAAI Press/MIT Press, 1996.
Chittaro L., Ranon R., Lopez Cortes J. "Ship over troubled waters: Functional reasoning with influences applied to the diagnosis of a marine technical system". In Proceedings of DX-96: 7th International Workshop on Principles of Diagnosis, Val Morin, Canada, NRC-CNRC, 1996.
Chittaro L. "Functional diagnosis and prescription of measurements using effort and flow variables", IEE Control Theory and Applications, vol. 142, no. 5, 1995, pp. 420-432.
Chittaro L., Guida G., Tasso C., and Toppano E. "Functional and teleological knowledge in the multi-modeling approach for reasoning about physical systems: a case study in diagnosis". IEEE Transactions on Systems, Man and Cybernetics, vol.23, no.6, 1993, pp. 1718-1751.
Chittaro L., Guida G., Tasso C., Toppano E. "Developing diagnostic applications using multiple models: the role of interpretative knowledge". In G.Guida, A.Stefanini (Eds.) Industrial Applications of Knowledge-based Diagnosis, Elsevier, Amsterdam, NL, 1992, pp. 219-263.

Galileo Project (Italian-French scientific cooperation, sponsored by CRUI and APAPE).

L. Chittaro has been:

program committee member of AAAI-97: 14th Conference of the American Association for Artificial Intelligence
co-editor of the forthcoming Special Issue on Functional Reasoning in Engineering of the AI in Engineering Journal
program committee member of DX-97: 8th International Worksho on Principles of Diagnosis
program committee member of DX-96: 7th International Workshop on Principles of Diagnosis
co-chair of STRAF-96 and STRAF-97: 2nd and 3rd Special Tracks on Reasonin about Function
program committee member of the IJCAI-97 Workshop on Modeling and Reasoning about Function
program committee member of the AAAI-96 Workshop on Modeling and Reasoning with Function
program committee member of the IJCAI-95 Workshop on Representing and Reasoning about Device Function
program committee member of the Invited Sessions on Model-based Systems at IMACS/IEEE-SMC CESA '96

Alfredo Soldati, Department of Chemical Science and Technology, University of Udine

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