WordNet: a lexical database for English
Communications of the ACM
ANLC '00 Proceedings of the sixth conference on Applied natural language processing
A new statistical parser based on bigram lexical dependencies
ACL '96 Proceedings of the 34th annual meeting on Association for Computational Linguistics
The role of lexico-semantic feedback in open-domain textual question-answering
ACL '01 Proceedings of the 39th Annual Meeting on Association for Computational Linguistics
On the MSE robustness of batching estimators
Proceedings of the 33nd conference on Winter simulation
Discovering word senses from text
Proceedings of the eighth ACM SIGKDD international conference on Knowledge discovery and data mining
Structured use of external knowledge for event-based open domain question answering
Proceedings of the 26th annual international ACM SIGIR conference on Research and development in informaion retrieval
Open-domain textual question answering techniques
Natural Language Engineering
Analysis of Statistical Question Classification for Fact-Based Questions
Information Retrieval
How to build a QA system in your back-garden: application for Romanian
EACL '03 Proceedings of the tenth conference on European chapter of the Association for Computational Linguistics - Volume 2
QUALIFIER: question answering by lexical fabric and external resources
EACL '03 Proceedings of the tenth conference on European chapter of the Association for Computational Linguistics - Volume 1
Open-domain voice-activated question answering
COLING '02 Proceedings of the 19th international conference on Computational linguistics - Volume 1
Finding similar questions in large question and answer archives
Proceedings of the 14th ACM international conference on Information and knowledge management
An intelligent discussion-bot for answering student queries in threaded discussions
Proceedings of the 11th international conference on Intelligent user interfaces
An analysis of the AskMSR question-answering system
EMNLP '02 Proceedings of the ACL-02 conference on Empirical methods in natural language processing - Volume 10
A machine learning approach to introspection in a Question Answering system
EMNLP '02 Proceedings of the ACL-02 conference on Empirical methods in natural language processing - Volume 10
Extracting exact answers to questions based on structural links
MultiSumQA '02 proceedings of the 2002 conference on multilingual summarization and question answering - Volume 19
Answering clinical questions with role identification
BioMed '03 Proceedings of the ACL 2003 workshop on Natural language processing in biomedicine - Volume 13
Question Answering on a case insensitive corpus
MultiSumQA '03 Proceedings of the ACL 2003 workshop on Multilingual summarization and question answering - Volume 12
Automatic question answering using the web: Beyond the Factoid
Information Retrieval
Answering complex questions with random walk models
SIGIR '06 Proceedings of the 29th annual international ACM SIGIR conference on Research and development in information retrieval
Automatic generation of document semantics for the e-science knowledge grid
Journal of Systems and Software - Special issue: Selected papers from the 11th Asia Pacific software engineering conference (APSEC 2004)
ACL '04 Proceedings of the 42nd Annual Meeting on Association for Computational Linguistics
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
Wide-coverage semantic representations from a CCG parser
COLING '04 Proceedings of the 20th international conference on Computational Linguistics
Discovering word senses from a network of lexical cooccurrences
COLING '04 Proceedings of the 20th international conference on Computational Linguistics
Handling biographical questions with implicature
HLT '05 Proceedings of the conference on Human Language Technology and Empirical Methods in Natural Language Processing
Learning to recognize features of valid textual entailments
HLT-NAACL '06 Proceedings of the main conference on Human Language Technology Conference of the North American Chapter of the Association of Computational Linguistics
Evaluating the efficacy of a terrorism question/answer system
Communications of the ACM - Creating a science of games
Satisfying information needs with multi-document summaries
Information Processing and Management: an International Journal
The Arizona virtual patient: using question-answering technology to enhance dialogue processing
HLT '02 Proceedings of the second international conference on Human Language Technology Research
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
Open-domain question: answering
Foundations and Trends in Information Retrieval
A weighted string pattern matching-based passage ranking algorithm for video question answering
Expert Systems with Applications: An International Journal
Concept-Based Question Analysis for an Efficient Document Ranking
ICCS '07 Proceedings of the 7th international conference on Computational Science, Part II
Scaffolding On-Line Discussions with Past Discussions: An Analysis and Pilot Study of PedaBot
ITS '08 Proceedings of the 9th international conference on Intelligent Tutoring Systems
Tapping on the potential of q&a community by recommending answer providers
Proceedings of the 17th ACM conference on Information and knowledge management
BestCut: a graph algorithm for coreference resolution
EMNLP '06 Proceedings of the 2006 Conference on Empirical Methods in Natural Language Processing
Solving logic puzzles: from robust processing to precise semantics
TextMean '04 Proceedings of the 2nd Workshop on Text Meaning and Interpretation
Concept-based question answering system
Proceedings of the 2007 conference on Human interface: Part I
Multiple-taxonomy question classification for category search on faceted information
TSD'07 Proceedings of the 10th international conference on Text, speech and dialogue
A framework for corroborating answers from multiple web sources
Information Systems
Learning to select the correct answer in multi-stream question answering
Information Processing and Management: an International Journal
A survey on question answering technology from an information retrieval perspective
Information Sciences: an International Journal
Finding answers to indonesian questions from english documents
CLEF'05 Proceedings of the 6th international conference on Cross-Language Evalution Forum: accessing Multilingual Information Repositories
Improving text similarity measurement by critical sentence vector model
AIRS'05 Proceedings of the Second Asia conference on Asia Information Retrieval Technology
A new passage ranking algorithm for video question answering
PSIVT'06 Proceedings of the First Pacific Rim conference on Advances in Image and Video Technology
Answer extraction from passage graph for question answering
IJCAI'13 Proceedings of the Twenty-Third international joint conference on Artificial Intelligence
Scaffolding student online discussions using past discussions: PedaBot studies
Artificial Intelligence Review
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In this paper we present the features of a Question/Answering (Q/A) system that had unparalleled performance in the TREC-9 evaluations. We explain the accuracy of our system through the unique characteristics of its architecture: (1) usage of a wide-coverage answer type taxonomy; (2) repeated passage retrieval; (3) lexico-semantic feedback loops; (4) extraction of the answers based on machine learning techniques; and (5) answer caching. Experimental results show the effects of each feature on the overall performance of the Q/A system and lead to general conclusions about Q/A from large text collections.