KNOWLEDGE ACQUIRING METHOD, DOCUMENT INFORMATION STRUCTURING METHOD AND APPARATUS, AND RECORDING MEDIUM RECORDING PROGRAM FOR IMPLEMENTING THE METHOD

摘要

PROBLEM TO BE SOLVED: To provide a knowledge acquiring method capable of acquiring knowledge on various relationship between plural concepts from a large amount of document set, and structuring and classifying the document information concerned with the input concept to each document according to the knowledge, a document information structuring method and apparatus and a recording medium recording a program for implementing the method. SOLUTION: This knowledge acquiring method includes a word input process (step S11) for inputting plural desired concepts as words, a data base retrieval process (step S13) for executing AND retrieval for the input word for a large amount of document set to retrieve document concerned with the plural input concepts, a high cooccurence work extract process (step S15) for taking words having high frequency of cooccurence with the input concept among the retrieved document set as knowledge expressing relationship between the input concepts and extracting the same, and document information indexing processing (step 17) for indexing the respective retrieved documents according to the extracted high cooccurence word.