Keyphrases
- domain adaptation
- multiple sources
- cross domain
- semi supervised
- labeled data
- semi supervised learning
- manifold alignment
- information retrieval
- sentiment classification
- target domain
- document classification
- test data
- transfer learning
- covariate shift
- unlabeled data
- text classification
- general purpose
- training examples
- text categorization
- active learning
- keywords
- training data
- concept space
- e learning
- databases