Keyphrases
- question answering
- natural language processing
- video sequences
- natural language
- information extraction
- natural language questions
- information retrieval
- passage retrieval
- activity recognition
- video frames
- question answering systems
- question classification
- relation extraction
- qa clef
- cross language
- video content
- open domain question answering
- answer validation
- named entities
- sentence retrieval
- short queries
- candidate answers
- syntactic information
- textual entailment recognition
- semantic roles