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Computer-based diagnostic expert system organized according to Bayesian theory

  • US 5,133,046 A
  • Filed: 01/03/1991
  • Issued: 07/21/1992
  • Est. Priority Date: 01/03/1991
  • Status: Expired due to Fees
First Claim
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1. An apparatus for determining the status of a system together with the probability of that status from time-dependent observables of the system, said apparatus comprising a computer, said computer including first memory means for storing a knowledge base, said knowledge base comprising data representative of a set of possible states of a system in association with probabilities that time-variable patterns of said observables will be present given the occurrence of such states, said apparatus including means for obtaining observables indicative of the operation of the system at a succession of different times and means for representing said observables in a time-succession of digitized codes, said apparatus also including diagnostic means responsive to data selected from said knowledge base and to said succession of digitized codes for generating a second set of digitized codes representing probability distributions over the set of said states and for updating said probability distributions as a function of time.

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