A Hybrid Approach for QA Track Definitional Questions.
Sasha Blair-GoldensohnKathleen R. McKeownAndrew Hazen SchlaikjerPublished in: TREC (2003)
Keyphrases
- qa systems
- question answering
- open domain
- question answer
- natural language questions
- qa clef
- answer extraction
- question answering systems
- correct answers
- candidate answers
- evaluation methodology
- answer validation
- natural language processing
- interactive question answering
- natural language
- open domain question answering
- question classification
- information extraction
- passage retrieval
- cross language
- question answer pairs
- answering questions
- answer questions
- information retrieval
- semantic roles
- relational databases
- genetic algorithm