Definition of posterior probability in US English: posterior probability
noun The statistical probability that a hypothesis is true calculated in the light of relevant observations.
Example sentences
‘Within the Bayesian framework, the posterior probability is obtained from the likelihood function and the prior probability.’ ‘They implemented a full Bayesian method for calculating posterior probabilities using Markov Chain Monte Carlo.’ ‘The expectations are actually obtained using the posterior probabilities rather than the prior probabilities.’ ‘To summarize: the paradox arises because you use the prior probabilities to calculate the expected gain rather than the posterior probabilities.’ ‘If the null hypothesis is rejected, the program calculates a posterior probability for functional divergence for each position in the alignment.’