Keyphrases
- text classification
- social media
- knowledge acquisition
- learning systems
- learned knowledge
- learning algorithm
- knowledge transfer
- acquire knowledge
- learning process
- prior knowledge
- background knowledge
- active learning
- knowledge base
- knowledge level
- reinforcement learning
- knowledge sharing
- bag of words
- expert systems
- domain knowledge
- text categorization
- learning tasks
- unlabeled data
- knowledge discovery
- labeled and unlabeled data
- feature selection