SYSTEM AND PROGRAM FOR DATABASE KNOWLEDGE EXTRACTION, AND SYSTEM AND PROGRAM FOR DATABASE KNOWLEDGE RETRIEVAL

摘要

PROBLEM TO BE SOLVED: To provide a system for database knowledge extraction/retrieval or the like, which is available for information retrieval by automatically constructing an important word dictionary to be used for a specified purpose.;SOLUTION: Suffixes included in a knowledge extraction object database DB are taken out and are regularly arranged to generate a suffix group (S100). Suffixes constituting the suffix group are compared with each other to segment coinciding parts as character string classes, and character string classes are excluded on the basis of their frequencies in appearance to obtain the final character string classes (S200). Unless a character string class is in inclusive relation with the other character string classes, the character string class is extracted as an important word to be registered in an important word dictionary database DB (S300).;COPYRIGHT: (C)2005,JPO&NCIPI