Keyphrases
- implicit feedback
- item recommendation
- personalized ranking
- matrix factorization
- eye tracking
- user behavior
- collaborative filtering
- user feedback
- recommender systems
- web search
- explicit feedback
- relevance feedback
- cold start
- contextual information
- relevance judgments
- tensor factorization
- tag recommendation
- data sparsity
- information retrieval
- missing data
- web search engines