Artificial Intelligence - Special volume on qualitative reasoning about physical systems
Diagnostic reasoning based on structure and behavior
Artificial Intelligence - Special volume on qualitative reasoning about physical systems
The use of design descriptions in automated diagnosis
Artificial Intelligence - Special volume on qualitative reasoning about physical systems
A blackboard architecture for control
Artificial Intelligence
A formal model of diagnostic inference. I. Problem formulation and decomposition
Information Sciences: an International Journal - Special issue on expert systems
A theory of diagnosis from first principles
Artificial Intelligence
Artificial Intelligence
Artificial Intelligence
Issues in Model Based Troubleshooting
Issues in Model Based Troubleshooting
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Model based causal reasoning has been widely used for physical systems diagnosis. The system fault is localized with the causal relation of system structure and behavior. In such applications, if the system fault is not localized with the observed behavior, then a subsequent observation is made. This research studies a hierarchical symptom classification for guiding a subsequent observation in model based causal reasoning. The diagnostic symptoms are mapped to the system functional hierarchy and the symptoms are classified by partitioning the functional hierarchy. The dependency relation of symptoms guides subsequent observation. This strategy enhances the control of subsequent observation by hierarchically structuring and classifying the symptoms.