POSTERIOR PROBABILITY CALCULATING APPARATUS, POSTERIOR PROBABILITY CALCULATING METHOD, AND NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM

摘要

A posterior probability calculating apparatus that calculates the posterior probability in a short time includes a user information storage unit, a prior probability calculating unit, a likelihood calculating unit, an accepting unit, a posterior probability calculating unit, and an output unit. The user information storage unit stores user information that associates a user attribute and log information. The prior probability calculating unit calculates the prior probability that a user has a certain user attribute. The likelihood calculating unit calculates the likelihood that a user with a certain user attribute has performed a certain event. The accepting unit accepts calculation target information. The posterior probability calculating unit calculates the posterior probability that a user who has performed an event included in log information included in the accepted calculation target information has a user attribute included in the calculation target information. The output unit outputs information regarding the posterior probability.