Keyphrases
- question answering
- multi step
- information retrieval
- answering questions
- information extraction
- natural language
- cross language
- natural language processing
- video data
- video sequences
- k nearest neighbor
- passage retrieval
- knn
- natural language questions
- multimedia
- question answering systems
- syntactic information
- qa clef
- question classification
- video content
- knowledge representation
- open domain question answering
- qa systems
- video retrieval
- semi supervised
- training data
- search engine