IDLE TALK EXTRACTION SYSTEM, METHOD AND PROGRAM FOR EXTRACTING IDLE TALK PARTS FROM CONVERSATION

摘要

PROBLEM TO BE SOLVED: To provide a technique for extracting idle talk parts from a conversation.SOLUTION: An idle talk extraction system for extracting idle talks from a conversation comprises: a first corpus including documents in a plurality of fields; a second corpus including only documents in a field to which the conversation belongs; a determination part to determine as a lower limit subject word a word for which an idf value for the first corpus and an idf value for the second corpus are each below a first prescribed threshold value, for words included in the second corpus; a score calculation part to calculate as a score a tf-idf value for each word included in the second corpus and, for the lower limit subject word, use a constant set as a lower limit instead of the tf-idf value; a clipping part to sequentially cut out intervals to be processed, from text data of contents of the conversation; and an extraction part to extract as an idle talk part an interval where an average value of the score of words included in the interval is larger than a second prescribed threshold value.