Keyphrases
- feature selection
- database
- query formulation
- response time
- text categorization
- query processing
- learning experience
- range queries
- query evaluation
- user queries
- relevance feedback
- e learning
- mutual information
- database queries
- learning process
- keywords
- query expansion
- data sources
- database systems
- language learning
- support vector
- model selection
- learning activities
- learning environment
- learning systems
- learning strategies
- learning processes
- text classification
- multi task
- feature selection algorithms
- query terms
- vector space
- index structure
- information retrieval systems
- multi dimensional
- multi class
- classification accuracy
- feature extraction
- machine learning