Keyphrases
- sentiment analysis
- online reviews
- sentence level
- text mining
- opinion mining
- sentiment classification
- positive or negative
- text classification
- product reviews
- social media content
- sentiment polarity
- text documents
- user generated
- data mining
- knn
- information retrieval
- active learning
- free text
- wordnet
- natural language processing
- information extraction
- data analysis
- social networks