POTENTIAL CLASS EXTRACTION METHOD AND DEVICE, POTENTIAL CLASS EXTRACTION PROGRAM AND ITS RECORDING MEDIUM

摘要

PPROBLEM TO BE SOLVED: To perform potential class analysis in a short time. PSOLUTION: A singular value decomposition part 2 reads an analysis target data matrix A from an analysis target DB1, and operates singular value decomposition. A concept space in which highly relevant components are gathered in one dimension is generated from the analysis target data matrix A by the singular value decomposition. A dimension compression part 3 operates dimension compression to the analysis target data matrix A by using only a larger singular value based on the result of the singular value decomposition, and calculates an approximation matrix A'. A discretization part 4 discretizes each component of the approximation matrix A' to calculate a diffusion approximation matrix A". A potential class extraction part 5 operates potential class extraction by applying a method such as known EM algorithm or deterministic annealing EM algorithm to the diffusion approximation matrix A". PCOPYRIGHT: (C)2008,JPO&INPIT