Keyphrases
- question answering
- multi modal
- question classification
- information retrieval
- visual features
- information extraction
- cross language
- natural language questions
- natural language processing
- named entities
- natural language
- open domain question answering
- domain specific
- syntactic information
- multimedia
- machine learning
- question answering systems
- high level
- qa clef
- sentence retrieval
- semantic roles
- qa systems
- answer validation
- low level
- expert systems
- video search