Searching the web for alternative answers to questions on WebQA sites

Authors:
Natsuki Takata;Hiroaki Ohshima;Satoshi Oyama;Katsumi Tanaka
Affiliations:
Graduate School of Informatics, Kyoto University, Japan;Graduate School of Informatics, Kyoto University, Japan;Graduate School of Information Science and Technology, Hokkaido University, Japan;Graduate School of Informatics, Kyoto University, Japan
Venue:
WAIM'10 Proceedings of the 11th international conference on Web-age information management
Year:
2010

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Abstract

We propose a method of discovering alternative answers from the Web that are to a question posted on a Web question & answer (Q&A) site and differ from existing answers to the question on the Q&A site. Our method first automatically generates queries for conventional Web search engines to collect Web pages that can contain answers to the target question. Each collected Web page is evaluated by calculating two kinds of scores: one represents the probability that the page has information that answers a question in the Q&A content and the other represents the possibility that it has an alternative answer. The method is implemented and the system is evaluated using actual Q&A contents.