| 摘要 |
PROBLEM TO BE SOLVED: To enable a user to specify a document in accordance with classification by generating the classification following a viewpoint. SOLUTION: A word is designated, retrieval is performed and a document group to be an object is selected. The document is subjected to a morphological analysis, words are extracted and a word under consideration is selected on the basis of the number of frequencies. The cooccurrence relations (cooccurrence graph) of the word under consideration are detected in the sentence unit of each document. A cooccurrence graph included in many sentences is selected as a conceptual graph, and the conceptual vector of a document to be written is decided as to whether to include the conceptual graph. A document is classified and displayed according to the conceptual vector so that the document can be selected.
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