Patent ID: 8731881
Filing Date: 2014-05-20
Classification: G06F,G06K,G06N

Abstract:
1. A mixture model estimation device comprising: a data input unit that inputs data of a mixture model to be estimated, and candidate values for a mixture number, and types and parameters of components constituting the mixture model that are necessary for estimating the mixture model of the data; a processing unit comprising a computer hardware processor that sets the mixture number from the candidate values, calculates a variation probability of a hidden variable for a random variable which is a target for estimating the mixture model of the data with respect to the set mixture number, and optimally estimates the mixture model by optimizing the types and parameters of the components using the calculated variation probability of the hidden variable so that a lower bound of a model posterior probability separated for each of the components of the mixture model is maximized; and a model estimation result output unit that outputs a model estimation result obtained by the processing unit, wherein: