A number of different tests and approaches are developed to determine the existence of potential anomalies in rule-based systems that employ MYCIN uncertainty factors (weights). First, the distribution of weights is compared to other systems' distributions and weights are investigated as to...

Expert systems often employ a weight on rules to capture conditional probabilities. For example, in classic rule-based settings, Pr(h | e) = x is used to mean "If e is known to be true then conclude h is true with probability x." Further, other probability-based approaches, such as influence...