acl acl2010 acl2010-189 acl2010-189-reference knowledge-graph by maker-knowledge-mining
Source: pdf
Author: Matthias H. Heie ; Edward W. D. Whittaker ; Sadaoki Furui
Abstract: In this paper we demonstrate that there is a strong correlation between the Question Answering (QA) accuracy and the log-likelihood of the answer typing component of our statistical QA model. We exploit this observation in a clustering algorithm which optimizes QA accuracy by maximizing the log-likelihood of a set of question-and-answer pairs. Experimental results show that we achieve better QA accuracy using the resulting clusters than by using manually derived clusters.
[Huang et al.2001] Xuedong Huang, Alex Acero and Hsiao-Wuen Hon. 2001. Spoken Language Processing. Prentice-Hall, Upper Saddle River, NJ, USA. [Kneser and Ney1993] Reinhard Kneser and Hermann Ney. 1993. Improved Clustering Techniques for Class-based Statistical Language Modelling. Proceedings of the European Conference on Speech Communication and Technology (EUROSPEECH). [Merkel and Klakow2007] Andreas Merkel and Dietrich Klakow. 2007. Language Model Based Query Classification. Proceedings of the European Conference on Information Retrieval (ECIR). [Whittaker et al.2005] Edward Whittaker, Sadaoki Furui and Dietrich Klakow. 2005. A Statistical Classification Approach to Question Answering using Web Data. Proceedings of the International Conference on Cyberworlds. [Whittaker et al.2006] Edward Whittaker, Josef Novak, Pierre Chatain and Sadaoki Furui. 2006. TREC 2006 Question Answering Experiments at Tokyo Institute of Technology. Proceedings of The Fifteenth Text REtrieval Conference (TREC). [Zhang and Lee2003] Dell Zhang and Wee Sun Lee. 2003. Question Classification using Support Vector Machines. Proceedings of the Special Interest Group on Information Retrieval (SIGIR). 240