A METHOD AND AN APPARATUS OF KEYWORD EXTRACTION AND A COMMUNICATION ASSIST DEVICE

摘要

A method for extracting a keyword comprises a step for generating an ontology schema for a word and the number of appearance frequencies of the word and generating a keyword candidate graph for a text inputted by using the ontology schema; a step for extending the keyword candidate graph by using a keyword graph stored in a database unit based on ontology; and a step for extracting a keyword from the keyword candidate graph. [Reference numerals] (100) Input unit;(200) Input processing unit;(300) Ontology-based database unit;(400) Keyword extracting unit;(500) Output unit