Dictionary creation device and dictionary creation method

Details Dictionary creation device and dictionary creation method Dictionary creation device and dictionary creation method

2011-04-05

2011-04-05

Abel-Jalil, Neveen (Department: 2165)

Data processing: database and file management or data structures

Database and file access

Preparing data for information retrieval

C707S728000, C707S730000, C707S748000

Reexamination Certificate

active

07921113

ABSTRACT:
A dictionary creation device and dictionary creation method which optimally create and update a dictionary for classifying, searching, or extracting text information in accordance with a changes in content of text information groups. The dictionary creation device includes a keyword extraction unit that extracts a keyword from inputted text information; a keyword statistics unit that finds statistics regarding an appearance of the keyword; a keyword assessment value calculation unit that calculates an assessment value of the extracted keyword based on the statistics regarding the appearance of the keyword; a determination unit that determines whether or not to register or delete the keyword based on the calculated assessment value; a dictionary registration and deletion unit which registers or deletes the keyword in or from a dictionary database based on a result of the determination performed by the determination unit; and the dictionary database.

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