Keyphrases
- question answering
- question classification
- question answering systems
- qa clef
- natural language questions
- answer extraction
- answer validation
- qa systems
- open domain question answering
- answering questions
- candidate answers
- natural language
- natural language processing
- information extraction
- information retrieval
- cross language
- named entities
- visual information
- syntactic information
- image representation
- visual features
- sentence retrieval
- semantic roles
- document retrieval
- semantic parsing
- passage retrieval
- relation extraction
- low level
- textual entailment recognition
- co occurrence
- xml documents
- question answer pairs