Keyphrases
- pattern recognition
- machine learning
- support vector
- text messages
- user defined
- feature selection
- decision trees
- support vector machine
- classification accuracy
- classification algorithm
- user interaction
- classification systems
- user interface
- preprocessing
- feature extraction
- feature space
- supervised learning
- collaborative filtering
- data sets
- user preferences
- classification process
- location information
- social networking
- online social networks
- pattern classification
- machine learning methods
- polarity classification
- classification method
- machine learning algorithms
- training samples
- model selection
- text classification
- image classification
- end users
- social media
- active learning
- feature vectors
- information retrieval