Keyphrases
- question answering
- domain adaptation
- question classification
- question answering systems
- qa clef
- natural language questions
- qa systems
- answer extraction
- answer validation
- candidate answers
- answering questions
- cross domain
- semi supervised
- named entities
- multiple sources
- information extraction
- natural language processing
- natural language
- labeled data
- sentiment classification
- semi supervised learning
- information retrieval
- target domain
- test data
- transfer learning
- question answer pairs
- document classification
- databases
- data sets
- passage retrieval
- prior knowledge
- training data