Keyphrases
- matrix factorization
- collaborative filtering
- recommender systems
- missing data
- low rank
- negative matrix factorization
- factor analysis
- nonnegative matrix factorization
- factorization methods
- association rules
- variational bayesian
- latent factors
- implicit feedback
- data matrix
- stochastic gradient descent
- tensor factorization
- personalized ranking
- factorization method
- feature extraction
- data sparsity
- gaussian processes
- item recommendation