Baseball: an automatic question answerer
Computers & thought
A maximum entropy approach to natural language processing
Computational Linguistics
Query expansion using local and global document analysis
SIGIR '96 Proceedings of the 19th annual international ACM SIGIR conference on Research and development in information retrieval
Inducing Features of Random Fields
Inducing Features of Random Fields
Question Answering from Frequently Asked Question Files: Experiences with the FAQ Finder System
Question Answering from Frequently Asked Question Files: Experiences with the FAQ Finder System
Proceedings of the tenth international conference on Information and knowledge management
Performance issues and error analysis in an open-domain question answering system
ACM Transactions on Information Systems (TOIS)
Open-domain textual question answering techniques
Natural Language Engineering
Learning how to answer questions using trivia games
COLING '02 Proceedings of the 19th international conference on Computational linguistics - Volume 1
Performance issues and error analysis in an open-domain Question Answering system
ACL '02 Proceedings of the 40th Annual Meeting on Association for Computational Linguistics
In question answering, two heads are better than one
NAACL '03 Proceedings of the 2003 Conference of the North American Chapter of the Association for Computational Linguistics on Human Language Technology - Volume 1
Automatic derivation of surface text patterns for a maximum entropy based question answering system
NAACL-Short '03 Proceedings of the 2003 Conference of the North American Chapter of the Association for Computational Linguistics on Human Language Technology: companion volume of the Proceedings of HLT-NAACL 2003--short papers - Volume 2
A statistical method for short answer extraction
ODQA '01 Proceedings of the workshop on Open-domain question answering - Volume 12
A hybrid approach to natural language web search
EMNLP '02 Proceedings of the ACL-02 conference on Empirical methods in natural language processing - Volume 10
Question answering as question-biased term extraction: a new approach toward multilingual QA
ACL '05 Proceedings of the 43rd Annual Meeting on Association for Computational Linguistics
Statistical answer-type identification in open-domain question answering
HLT '02 Proceedings of the second international conference on Human Language Technology Research
A machine learning approach for Indonesian question answering system
AIAP'07 Proceedings of the 25th conference on Proceedings of the 25th IASTED International Multi-Conference: artificial intelligence and applications
NAACL-Short '06 Proceedings of the Human Language Technology Conference of the NAACL, Companion Volume: Short Papers
Answer validation by information distance calculation
IRQA '08 Coling 2008: Proceedings of the 2nd workshop on Information Retrieval for Question Answering
Machine learning for query formulation in question answering
Natural Language Engineering
A preliminary work on classifying time granularities of temporal questions
IJCNLP'05 Proceedings of the Second international joint conference on Natural Language Processing
Classification of multiple-sentence questions
IJCNLP'05 Proceedings of the Second international joint conference on Natural Language Processing
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We present a statistical question answering system developed for TREC-9 in detail. The system is an application of maximum entropy classification for question/answer type prediction and named entity marking. We describe our system for information retrieval which did document retrieval from a local encyclopedia, and then expanded the query words and finally did passage retrieval from the TREC collection. We will also discuss the answer selection algorithm which determines the best sentence given both the question and the occurrence of a phrase belonging to the answer class desired by the question. A new method of analyzing system performance via a transition matrix is shown.