Keyphrases
- matrix factorization
- collaborative filtering
- recommender systems
- low rank
- factorization methods
- data sparsity
- nonnegative matrix factorization
- missing data
- factor analysis
- negative matrix factorization
- probabilistic matrix factorization
- data matrix
- stochastic gradient descent
- variational bayesian
- item recommendation
- personalized ranking
- information extraction
- natural images
- least squares