Keyphrases
- sentiment classification
- particle swarm optimization
- feature selection
- text classification
- sentiment analysis
- text categorization
- cross domain
- sentence level
- online product reviews
- opinion mining
- feature space
- multi objective
- genetic algorithm
- cross lingual
- online reviews
- feature set
- machine learning
- text documents
- decision trees
- document level
- k nearest neighbor
- n gram
- text mining
- support vector machine
- opinion summarization
- unsupervised learning
- knn