Question Answering Using Constraint Satisfaction: QA-By-Dossier-With-Contraints.
John M. PragerJennifer Chu-CarrollKrzysztof CzubaPublished in: ACL (2004)
Keyphrases
- retrieval effectiveness
- constraint satisfaction
- question answering
- information retrieval
- constraint satisfaction problems
- qa systems
- qa clef
- passage retrieval
- heuristic search
- constraint relaxation
- natural language processing
- named entities
- question classification
- open domain question answering
- natural language
- information extraction
- question answering systems
- open domain
- answer validation
- answer extraction
- relation extraction
- sentence retrieval
- syntactic information
- cross language
- semantic roles
- natural language questions
- search space