Automatic acquisition of hyponyms from large text corpora
COLING '92 Proceedings of the 14th conference on Computational linguistics - Volume 2
Finding parts in very large corpora
ACL '99 Proceedings of the 37th annual meeting of the Association for Computational Linguistics on Computational Linguistics
Learning surface text patterns for a Question Answering system
ACL '02 Proceedings of the 40th Annual Meeting on Association for Computational Linguistics
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
Offline strategies for online question answering: answering questions before they are asked
ACL '03 Proceedings of the 41st Annual Meeting on Association for Computational Linguistics - Volume 1
Fine-grained proper noun ontologies for question answering
SEMANET '02 Proceedings of the 2002 workshop on Building and using semantic networks - Volume 11
Semantic Segment Extraction and Matching for Internet FAQ Retrieval
IEEE Transactions on Knowledge and Data Engineering
HLT '05 Proceedings of the conference on Human Language Technology and Empirical Methods in Natural Language Processing
HLT '05 Proceedings of the conference on Human Language Technology and Empirical Methods in Natural Language Processing
Integrating linguistic knowledge in passage retrieval for question answering
HLT '05 Proceedings of the conference on Human Language Technology and Empirical Methods in Natural Language Processing
Lexical patterns or dependency patterns: which is better for hypernym extraction?
CoNLL '09 Proceedings of the Thirteenth Conference on Computational Natural Language Learning
Structural, transitive and latent models for biographic fact extraction
EACL '09 Proceedings of the 12th Conference of the European Chapter of the Association for Computational Linguistics
Topic indexing and retrieval for factoid QA
IRQA '08 Coling 2008: Proceedings of the 2nd workshop on Information Retrieval for Question Answering
Lexical and structural biases for function parsing
Parsing '05 Proceedings of the Ninth International Workshop on Parsing Technology
Coreference Resolution on Blogs and Commented News
DAARC '09 Proceedings of the 7th Discourse Anaphora and Anaphor Resolution Colloquium on Anaphora Processing and Applications
Towards natural question guided search
Proceedings of the 19th international conference on World wide web
Extracting meronymy relationships from domain-specific, textual corporate databases
NLDB'10 Proceedings of the Natural language processing and information systems, and 15th international conference on Applications of natural language to information systems
Estimating importance features for fact mining: with a case study in biography mining
Large Scale Semantic Access to Content (Text, Image, Video, and Sound)
Question answering for dutch using dependency relations
CLEF'05 Proceedings of the 6th international conference on Cross-Language Evalution Forum: accessing Multilingual Information Repositories
Improving passage retrieval in question answering using NLP
EPIA'05 Proceedings of the 12th Portuguese conference on Progress in Artificial Intelligence
Making stone soup: evaluating a recall-oriented multi-stream question answering system for dutch
CLEF'04 Proceedings of the 5th conference on Cross-Language Evaluation Forum: multilingual Information Access for Text, Speech and Images
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We investigate the impact of the precision/recall trade-off of information extraction on the performance of an offline corpus-based question answering (QA) system. One of our findings is that, because of the robust final answer selection mechanism of the QA system, recall is more important. We show that the recall of the extraction component can be improved using syntactic parsing instead of more common surface text patterns, substantially increasing the number of factoid questions answered by the QA system.