Keyphrases
- question answering
- information extraction
- question classification
- natural language processing
- video data
- information retrieval
- video clips
- answering questions
- named entities
- passage retrieval
- relation extraction
- question answering systems
- qa clef
- natural language questions
- syntactic information
- open domain question answering
- cross language
- natural language
- video retrieval
- video streams
- qa systems
- candidate answers
- answer validation
- knowledge base
- video shots
- semantic roles
- video content
- video frames
- knowledge representation
- sentence retrieval
- expert systems