Keyphrases
- question answering
- question answering systems
- open domain
- question classification
- information retrieval
- natural language
- information extraction
- passage retrieval
- qa clef
- natural language processing
- qa systems
- cross language
- interactive question answering
- databases
- question answer
- natural language questions
- answer validation
- open domain question answering
- syntactic information
- document retrieval
- image segmentation
- data sets
- database