| 摘要 |
PROBLEM TO BE SOLVED: To give a category expressing ambiguity to document data even if definition of the category given to document data in advance has ambiguity.SOLUTION: A feature extraction part 16 extracts feature information from document data classified into a specific category in advance. A clustering part 18 classifies classification of the document data into clusters based on the feature information. A category updating section 24 gives even a category of other document data classified into the same cluster as its own to the document data classified into the same cluster. |
