| 摘要 |
PROBLEM TO BE SOLVED: To provide an information retrieval system that is very convenient and flexible for a user by creating new classification on the basis of not only a fixed classification retrieval but also retrieval results information and providing a client with the results. SOLUTION: An information retrieving device 102 collects information from various information storage devices, automatically calculates the degree of association of the collected information from the similarity, use frequency, etc., of the collected information by using a degree of association data collecting part 252, and stores the degree of association of the collected information as secondary information in a secondary information storing part 204. An inter-information relation constructing part 211 constructs an inter-information network diagram and a division tree diagram by using the inter-information degree of association and creates a new classification obtained by combining close pieces of information with each other. A classification extracting part 304 extracts a needed classification by using this inter-information relation data and a degree of association of classification boundaries. It is possible to flexibly correspond to information change and user convenience because a new classification corresponding to the degree of association of each piece of information can be created in this invention.
|
