Question Answer program using a large amount of comment text , server and methods .

摘要

PROBLEM TO BE SOLVED: To provide a question and answer server etc. which can clearly show (or narrow down to) an answer sentence in which a user intention is reflected, when there are a plurality of candidates for the answer sentence to a question sentence from the user.;SOLUTION: A question and answer program comprises: question keyword extraction means which extracts a plurality of question keywords from a question sentence; comment text retrieval means which retrieves comment texts including the question keywords; topic classification means which classifies the retrieved plurality of comment texts into a plurality of topic groups; answer sentence detection means which associates an answer sentence whose similarity with each topic and each answer sentence becomes more than a prescribed threshold; representative keyword extraction means which extracts a representative keyword for each topic; differential keyword extraction means which extracts the representative keyword occurring only in the topic as a differential keyword; differential keyword selection means which clearly shows a plurality of differential keywords to a user so as to be selectable; and answer sentence output means which clearly shows the answer sentence corresponding to the differential keywords to the user.;COPYRIGHT: (C)2013,JPO&INPIT