Keyphrases
- learning to rank
- recommender systems
- collaborative filtering
- balancing exploration and exploitation
- ranking functions
- information retrieval
- loss function
- direct optimization
- evaluation measures
- learning to rank algorithms
- ranking svm
- query dependent
- document retrieval
- supervised learning
- user feedback
- reinforcement learning
- retrieval systems
- similarity measure
- data sets
- precision and recall
- user preferences
- web search
- evaluation metrics
- relevance judgments
- active learning
- directly optimize
- machine learning