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Health management is becoming increasingly important in expensive and complex machinery such as aircraft, shipboard equipments, and ground vehicles. The diagnosis of failures in such vehicles (or in their subsystems) based on asset condition has been analyzed in-depth in the last few decades, and is relatively well understood. However, prognostic evaluation of faults in machinery, also known as prognostic...
Intelligent diagnostic reasoning system (IDRS), developed by Lockheed Martin Simulation, Training & Support (LM STS), implements a Bayesian model that is able to reduce the time and cost to diagnose failures by isolating faults[1]. As is the case with all learning systems, the quality of diagnosis is expected to increase with time as more data is presented and more knowledge is absorbed by the...
In fuzzy abduction, one needs to evaluate the membership distribution of the premise (antecedent clause), when the membership distribution of the consequent clause, and the fuzzy implication relations between the antecedent and the consequent clauses are provided. The paper formulates and solves the problem of fuzzy abduction by using type-2 fuzzy sets. It presumes background knowledge about the primary...
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