| 摘要 |
PROBLEM TO BE SOLVED: To provide an information retrieval device for solving the problem in the conventional device that a user cannot acquire knowledge efficiently with the result of information retrieval as a starting point since the result of ordinary information retrieval is presented merely as a list of documents. SOLUTION: While defining a document database 101 as a retrieval target, an information retrieving means 102 performs basic information retrieval, on the basis of the information request of the user, document groups on the acquired list of the retrieved result are sorted into document sets composed of mutually similar documents by a retrieved result sort means 103, a characteristic word and a characteristic relation are extracted from each of document sets of the retrieved result by a characteristic word extract means 104 and a characteristic relation extracting means 105 and on the basis of the sorted groups, the extracted word and relation, the information of an output picture operable for the user is generated by an output information-editing means 106.
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