Keyphrases
- sentiment analysis
- sentiment classification
- opinion mining
- text classification
- database
- multi aspect
- sentence level
- natural language processing
- online reviews
- text mining
- query expansion
- user queries
- sentiment lexicon
- sentiment words
- social media content
- product features
- product reviews
- user generated
- data sources
- databases
- query terms
- text categorization
- relevance feedback