Towards Partial (and Useful) Model Identification for Model-Based Diagnosis



Published Oct 11, 2010
Vladimir Sadov Eliahu Khalastchi Meir Kalech Gal A. Kaminka


A fundamental requirement for model-based diagnosis (MBD) is the existence of a model of the diagnosed system. Based on the model, MBD algorithms are able to diagnose the faulty components. Unfortunately, a model is not always available. While it is possible in principle to infer a partial model by repeated trials, performing such trials is time and resource costly for any practical system. Therefore minimizing the number of trials is important. In this paper, we propose three algorithms for learning the model: two algorithms are Depth-first search (DFS) based and one algorithm utilizes a binary search algorithm. We evaluate the algorithms theoretically and empirically through thousands of tests and show that one of the DFS-based algorithm scales well and the binary search algorithm is efficient for small systems. Finally, we successfully demonstrate the algorithms on a model of the NAO robot (20 components) to show its capability in real-world domain.

How to Cite

Sadov, V., Khalastchi, E., Kalech, M., & A. Kaminka, G. (2010). Towards Partial (and Useful) Model Identification for Model-Based Diagnosis. Annual Conference of the PHM Society, 2(2).
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Model Identification

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