Keyphrases
- polarity classification
- sentiment analysis
- social media data
- sentence level
- public opinion
- social media
- sentiment classification
- document level
- linguistic features
- real world events
- bayesian estimation
- markov random field
- influence propagation
- topic detection
- online social media
- opinion mining
- social media content
- social networks
- micro blog
- positive or negative
- manually annotated
- test set
- graph cuts
- micro blogging
- social networking
- online social networks
- machine learning
- open domain
- text data
- positive and negative
- text classification
- piecewise constant
- massive amounts
- user comments