Keyphrases
- sentiment analysis
- sentiment words
- sentence level
- positive or negative
- product reviews
- product features
- opinion mining
- sentiment lexicon
- sentiment classification
- text classification
- text mining
- natural language processing
- online reviews
- multi aspect
- opinion words
- user generated
- customer reviews
- social media content
- information retrieval
- sentiment polarity
- collective classification
- automatically extracting
- information theoretic
- text categorization
- natural language