QACTIS Enhancements in TREC QA 2006.
Patrick SchoneGary M. CianyR. CuttsPaul McNameeJames MayfieldTom SmithPublished in: TREC (2006)
Keyphrases
- question answering
- information retrieval
- question answering systems
- qa clef
- qa systems
- natural language
- natural language processing
- question classification
- test collection
- answer extraction
- open domain question answering
- information extraction
- passage retrieval
- semantic roles
- candidate answers
- natural language questions
- answer validation
- cross language
- pseudo relevance feedback
- open domain
- blog opinion retrieval