Keyphrases
- domain adaptation
- language model
- language modeling
- multiple sources
- document retrieval
- query expansion
- information retrieval
- labeled data
- cross domain
- probabilistic model
- n gram
- test collection
- retrieval model
- semi supervised learning
- semi supervised
- sentiment classification
- relevance model
- transfer learning
- document classification
- unlabeled data
- training data
- test data
- text classification
- search engine