Utterance key word extraction device, key word extraction system using the device, method and program thereof

摘要

PROBLEM TO BE SOLVED: To provide an in-utterance important word extraction device capable of extracting an important word from utterance information without creating a keyword list for each user.SOLUTION: A morpheme analysis part outputs a morpheme string comprising information on a word and a part of speech divided into morphemes through morpheme analysis of text information input to a text input part. A word registration part receives the morpheme string as an input and registers a word meeting a predetermined condition as a keyword in a keyword list. A speech recognition part creates and outputs a text sentence comprising a word string divided into morphemes through speech recognition processing on speech information input to a speech input part. An important word extraction part receives the text sentence as an input and extracts, as an important word, a word matching any of keywords registered in the keyword list.