Keyphrases
- language model
- domain adaptation
- language modeling
- n gram
- document retrieval
- probabilistic model
- information retrieval
- retrieval model
- cross domain
- labeled data
- multiple sources
- test collection
- unlabeled data
- semi supervised
- query expansion
- sentiment classification
- co training
- semi supervised learning
- document level
- test data
- bag of words
- error rate
- co occurrence
- feature extraction