Keyphrases
- question answering
- response time
- named entities
- natural language processing
- passage retrieval
- information extraction
- question classification
- syntactic information
- information retrieval
- open domain question answering
- natural language questions
- question answering systems
- natural language
- qa clef
- cross language
- answer validation
- relation extraction
- sentence retrieval
- semantic roles
- answer extraction
- question answer pairs
- textual entailment recognition