DEVICE FOR PREPARING REFERENCE DATA FOR RETRIEVAL, INFORMATION RETRIEVAL DEVICE, METHOD OF PREPARING REFERENCE DATA FOR RETRIEVAL AND INFORMATION RETRIEVAL METHOD

摘要

PROBLEM TO BE SOLVED: To provide a device for preparing reference data for retrieval, an information retrieval device, a method of preparing reference data for retrieval, and an information retrieval method, which obtain a suitable retrieval result even when a retrieval query is erroneously input or there is any fluctuation in the expressions of a retrieval keyword.;SOLUTION: A retrieval history storage means 110 stores a retrieval history which is based on a retrieval query including one or more retrieval keywords into a memory for each retrieval query. A retrieval frequency tabulation means 111 tabulates the retrieval frequency F of the retrieval query for each retrieval query, based on the retrieval history stored in the incorporated memory of a device 11 for preparing reference data for retrieval by the retrieval history storage means 110. A relevancy calculation means 112 calculates the relevancy of two retrieval keywords included in the retrieval history, based on the retrieval frequency tabulated by the retrieval frequency tabulation means 111, and creates the reference data for retrieval for associating the relevancy with the two retrieval keywords.;COPYRIGHT: (C)2011,JPO&INPIT