Keyphrases
- question answering
- natural language processing
- information extraction
- question classification
- e learning
- syntactic information
- named entities
- cross language
- information retrieval
- natural language
- qa clef
- passage retrieval
- relation extraction
- open domain question answering
- answer validation
- artificial intelligence
- question answering systems
- candidate answers
- semantic roles
- answer extraction
- structured data
- sentence retrieval
- context aware