NTT Question Answering System in TREC 2001.
Hideto KazawaHideki IsozakiEisaku MaedaPublished in: TREC (2001)
Keyphrases
- question answering
- question answering systems
- information retrieval
- question classification
- test collection
- natural language
- retrieval effectiveness
- answer validation
- answer extraction
- natural language processing
- information extraction
- evaluation campaigns
- named entities
- neural network
- cross language
- passage retrieval
- web search
- ir evaluation
- open domain
- text mining
- information retrieval systems
- ad hoc retrieval
- retrieval model
- qa clef
- retrieval systems
- biomedical information retrieval
- reuters corpus volume