Pattern identification method, apparatus, and program

摘要

Pattern recognition capable of robust identification for the variance of an input pattern is performed with a low processing cost while the possibility of identification errors is decreased. In a pattern recognition apparatus which identifies the pattern of input data from a data input unit ( 11 ) by using a hierarchical feature extraction processor ( 12 ) which hierarchically extracts features, an extraction result distribution analyzer ( 13 ) analyzes a distribution of at least one feature extraction result obtained by a primary feature extraction processor ( 121 ). On the basis of the analytical result, a secondary feature extraction processor ( 122 ) performs predetermined secondary feature extraction.