Diagnostic reasoning based on structure and behavior
Artificial Intelligence - Special volume on qualitative reasoning about physical systems
The role of frame-based representation in reasoning
Communications of the ACM
Generic expert system shell for diagnostic reasoning
IEA/AIE '88 Proceedings of the 1st international conference on Industrial and engineering applications of artificial intelligence and expert systems - Volume 1
Jet engine technical advisor (JETA)
IEA/AIE '89 Proceedings of the 2nd international conference on Industrial and engineering applications of artificial intelligence and expert systems - Volume 1
RATIONALE: Reasoning by Explaining
Proceedings of the Fourth International Conference on Data Engineering
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Proper maintenance and troubleshooting of complex mechanical equipment is a difficult task. A large amount of information, such as sensor data and previous repair actions, is available but infrequently used for interpretation by technical staff which is continually losing expertise due to turnover. Well structured knowledge-based systems can provide effective techniques for assisting in this task.A set of functional requirements for a troubleshooting advisory system is presented. Domain knowledge should be structured to make the system's operation more explicit to the knowledge engineer or end user. Reasoning must be carried out by navigating through a diagnostic network constructed from maintenance procedures and heuristics. The generic and modular approach used has the distinct advantage of making the task of creating diagnostic knowledge-bases easier. In addition, the large amount of information which is normally disseminated through many maintenance manuals can be easily accessible in a single computer environment, which in itself represents considerable savings in time for a mechanic. A generic system, called JETA (Jet Engine Troubleshooting Assistant) has been developed within this framework. In particular, JETA has been applied to troubleshoot the General Electric J85-CAN-15 jet engine that powers the CF-5 trainer fighters used by the Canadian Air Force.