Keyphrases
- sentiment classification
- redundant features
- sentence level
- sentiment analysis
- feature selection
- document level
- sentiment polarity
- conditional random fields
- text classification
- positive or negative
- log linear models
- high dimensionality
- cross domain
- opinion mining
- opinion words
- named entity recognition
- irrelevant features
- information extraction
- probabilistic model
- cross lingual
- natural language
- natural language processing
- hidden markov models
- classification accuracy
- feature selection algorithms
- text categorization
- product reviews
- machine learning
- neural network
- feature space
- training set
- pairwise
- language modeling
- feature subset
- data sets
- named entities
- generative model