G - Physics – 06 – F
Patent
G - Physics
06
F
354/225
G06F 11/34 (2006.01) G06F 11/25 (2006.01)
Patent
CA 2017970
-12- A TECHNIQUE FOR PRODUCING AN EXPERT SYSTEM FOR SYSTEM FAULT DIAGNOSIS Abstract The present invention relates to a technique for operation on a computer for developing the knowledge base for ultimately providing very fast and cost-efficient fault diagnosis systems. The present technique uses a effective hierarchy of rules where at a first level are rules which allow the arrangement of the system under test to bedecomposed into a hierarchy of sequential and parallel subsystems. At the second level are rules that generate the efficient testing rules for each pure subsystem. The second level rules can be compared to a node evaluation function in a typical problem of searching a graph to select the best node for expansion from a current list of candidate nodes, so that the best path to the correct system diagnosis is found in the shortest amount of time using a minimum of user input. Two heuristic rules are applied tospeed-up the process of selecting the node as the best candidate for expansion. The resultant hierarchy of rules permit the cost-efficient knowledge base and resultant output test tree procedure to be generated for a fault diagnosis system to be applied for testing an associated device or system.
Lirov Yuval V.
Yue On-Ching
American Telephone And Telegraph Company
Kirby Eades Gale Baker
LandOfFree
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