Keyphrases
- sentiment analysis
- product reviews
- online reviews
- emotion recognition
- opinion mining
- text mining
- product features
- multi aspect
- public opinion
- sentiment classification
- opinion words
- sentence level
- text classification
- positive or negative
- sentiment words
- customer reviews
- natural language processing
- data mining
- social media
- sentiment lexicon
- sentiment polarity
- opinion retrieval
- collective classification
- automatically extracting