Keyphrases
- text classification
- covariate shift
- social media
- training and test data
- domain adaptation
- semi supervised learning
- model selection
- labeled data
- feature selection
- sentiment classification
- text mining
- bag of words
- text categorization
- sentiment analysis
- machine learning
- naive bayes
- unlabeled data
- text data
- transfer learning
- text documents
- document classification
- co training
- data generation
- multi label
- unsupervised learning
- text classifiers
- data sets
- semantic features
- knn
- language modeling
- cross validation
- semi supervised
- labeled training data
- support vector
- training examples