Keyphrases
- question answering
- natural language processing
- passage retrieval
- question classification
- information retrieval
- visual information
- cross language
- information extraction
- qa clef
- image database
- syntactic information
- natural language questions
- low level
- natural language
- answer extraction
- sentence retrieval
- answer validation
- open domain question answering
- visual features
- relation extraction
- candidate answers
- high level
- artificial intelligence