Keyphrases
- matrix factorization
- cold start
- recommender systems
- data sparsity
- collaborative filtering
- cold start problem
- implicit feedback
- factorization methods
- user ratings
- item recommendation
- personalized recommendation
- missing data
- information overload
- user preferences
- recommendation quality
- user interests
- recommendation systems
- recommendation algorithms
- user profiles
- query expansion
- tensor factorization
- latent factor models
- user model
- end users
- user interface