Keyphrases
- question answering
- question classification
- qa clef
- question answering systems
- natural language questions
- answer extraction
- qa systems
- answer validation
- candidate answers
- open domain question answering
- answering questions
- natural language
- information extraction
- named entities
- syntactic information
- information retrieval
- visual features
- natural language processing
- question answer pairs
- cross language
- relation extraction
- visual information
- passage retrieval
- artificial intelligence
- semantic roles
- cross lingual