Keyphrases
- sentiment analysis
- concept hierarchy
- opinion mining
- sentiment classification
- text classification
- user profiles
- sentence level
- multi aspect
- co occurrence
- text mining
- formal concept analysis
- wordnet
- product reviews
- user generated
- product features
- online reviews
- domain ontology
- background knowledge
- natural language processing
- sentiment lexicon
- keywords
- attribute values
- data sets
- social media content