Keyphrases
- matrix factorization
- collaborative filtering
- recommender systems
- user preferences
- factor analysis
- item recommendation
- data sparsity
- cold start problem
- collaborative recommendation
- low rank
- latent factor models
- recommendation systems
- personalized recommendation
- factorization methods
- variational bayesian
- rating prediction
- missing data
- recommendation algorithms
- probabilistic matrix factorization
- cold start
- implicit feedback
- negative matrix factorization
- user behavior
- stochastic gradient descent
- latent factors
- personalized ranking
- data matrix
- nonnegative matrix factorization
- user profiles
- image classification
- tensor factorization
- social networks