Keyphrases
- matrix factorization
- collaborative filtering
- recommender systems
- item recommendation
- user ratings
- recommendation quality
- user preferences
- low rank
- factorization methods
- data sparsity
- negative matrix factorization
- cold start problem
- implicit feedback
- nonnegative matrix factorization
- recommendation systems
- user profiles
- cold start
- factor analysis
- missing data
- rating prediction
- probabilistic matrix factorization
- user interests
- user interaction
- personalized recommendation
- stochastic gradient descent
- user interface
- recommendation algorithms
- data matrix
- user feedback