Patent ID: 8489606
Filing Date: 2013-07-16
Classification: G06F

Abstract:
1. A music search apparatus using an emotion model, comprising: a hardware computer system comprising a hardware processor and a hardware memory; a music database (DB) for storing sound source data about a plurality of pieces of music and Arousal-Valence (AV) coefficients of the respective pieces of music; an emotion model generation unit operating on the hardware computer system and adapted to classify different emotion types into a plurality of groups, and generate an emotion classification model from using respective probability distributions of the plurality of groups for an AV coefficient plane; and a music search unit operating on the hardware computer system and adapted to, when a music search request is received, identify an emotion type from using information entered by a user, detect an AV coefficient range for designating an AV coefficient corresponding to the identified emotion type from using the emotion classification model, and search the music DB for music corresponding to the AV coefficient range, wherein the emotion model generation unit is adapted to measure similarity between the different emotion types using similarity between column vectors generated from a distribution matrix, wherein the distribution matrix indicates a number of times that each of the different emotion types are selected by users for each piece of music, and classify similar emotion types into an identical group based on the measured similarity between the different emotion types.