METADATA EXTRACTION SERVER, METADATA EXTRACTION METHOD AND PROGRAM

摘要

<P>PROBLEM TO BE SOLVED: To automatically generate and update a proper recognizer from information on a Web. Ž<P>SOLUTION: A teacher information collection part 234 collects content from a Web server 240. A characteristic amount calculation part 204 calculates a characteristic amount matrix representing the content of the collected content. A characteristic amount DB 201 clusters the characteristic amount matrixes by group when storing them at predetermined time intervals, and determines a subspace for each group of the characteristic amount matrixes. A metadata arrangement part 203 morphologically analyzes the collected content, and generates a metadata matrix representing occurrence frequency of a morphologically-analyzed word. A correlation coefficient calculation part 214 calculates a correlation coefficient between the group of the characteristic amount matrixes and a group of the metadata matrixes in each subspace. A correlation coefficient DB 205 stores the correlation coefficient calculated for each subspace. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž