A Probabilistic Approach to Hierarchical Model-Based Diagnosis

Reference: Srinivas, S. A Probabilistic Approach to Hierarchical Model-Based Diagnosis. Knowledge Systems Laboratory, February, 1994.

Abstract: Model-based diagnosis reasons backwards from a functional schematic of a system to isolate faults given observations of anomalous behavior. We develop a fully probabilistic approach to model based diagnosis and extend it to support hierarchical models. Our scheme translates the functional schematic into a Bayesian network and diagnostic inference takes place in the Bayesian network. A Bayesian network diagnostic inference algorithm is modified to take advantage of the hierarchy to give computational gains.

Full paper available as ps.

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