a theorem describing how the conditional probability of each of a set of possible causes for a given observed outcome can be computed from knowledge of the probability of each cause and the conditional probability of the outcome of each cause.
Derivatives
Bayesian
adjective
Origin:
mid 19th century: named after Thomas Bayes (1702–61), English mathematician
Bayes' theorem in other Oxford dictionaries
Definition of Bayes' theorem in the US English dictionary