Keyphrases
- matrix factorization
- collaborative filtering
- missing data
- recommender systems
- prediction accuracy
- factorization methods
- low rank
- negative matrix factorization
- data matrix
- nonnegative matrix factorization
- data sparsity
- stochastic gradient descent
- implicit feedback
- recurrent neural networks
- variational bayesian
- data sets
- factor analysis
- factorization method
- latent factors
- item recommendation
- least squares