QACTIS-based Question Answering at TREC 2005.
Patrick SchoneGary M. CianyR. CuttsPaul McNameeJames MayfieldThomas SmithPublished in: TREC (2005)
Keyphrases
- question answering
- information retrieval
- information extraction
- question answering systems
- named entities
- natural language processing
- question classification
- natural language
- passage retrieval
- natural language questions
- syntactic information
- cross language
- answer extraction
- qa clef
- answer validation
- qa systems
- open domain question answering
- semantic roles
- co occurrence
- knowledge base