Keyphrases
- learning to rank
- ranking functions
- loss function
- information retrieval
- evaluation measures
- ranking svm
- document retrieval
- collaborative filtering
- direct optimization
- query dependent
- supervised learning
- search result
- evaluation metrics
- retrieval systems
- ranking list
- learning to rank algorithms
- balancing exploration and exploitation
- semi supervised
- information extraction
- support vector
- keywords
- training data
- feature extraction
- multimedia
- search engine