Keyphrases
- question answering
- knowledge extraction
- information extraction
- information retrieval
- knowledge discovery
- qa clef
- syntactic information
- natural language
- natural language processing
- multi modal
- named entities
- passage retrieval
- visual information
- relation extraction
- question classification
- visual features
- natural language questions
- expert systems
- open domain question answering
- question answering systems
- cross language
- audio visual
- low level
- answer extraction
- data mining
- visual data
- databases
- image classification
- artificial intelligence
- answer validation