DATABASE RETIEVAL METHOD, DATABASE RETIEVAL PROGRAM, AND ORIGINAL PROCESSOR

摘要

PROBLEM TO BE SOLVED: To provide a function capable of displaying highly precise retrieval results even when the number of keywords designated by a user is small in the retrieval of a database.;SOLUTION: Marked document data is captured, and the document data is converted to character string data to divide character string data into the unit of a word to be stored. Next, a marking place is specified to store a marked word as a main retrieval character string and a not-marked word as a sub retrieval character string. The frequency of appearance of the sub retrieval character string is calculated, and it is specified about which field the document data is described based on the appearance frequency. Based on a main retrieval character string or the field specified before, the data base to be used for retrieval is selected, and the retrieval processing is carried out. From among retrieval result items, an item of a field highly related with the document is displayed preferentially. When the user wants to preserve a retrieval history and to use it for a future retrieval processing, retrieval history information is stored by the unit of the user and used as the history information for the subsequent retrieval processing.;COPYRIGHT: (C)2006,JPO&NCIPI