Keyphrases
- question answering
- natural language processing
- question classification
- information extraction
- natural language
- information retrieval
- qa clef
- cross language
- named entities
- syntactic information
- natural language questions
- question answering systems
- passage retrieval
- visual information
- image features
- feature vectors
- visual features
- semantic roles
- relation extraction
- artificial intelligence
- answer extraction
- data mining
- answering questions
- textual entailment recognition
- open domain question answering