Contextual Collaborative Filtering via Hierarchical Matrix Factorization.
Erheng ZhongWei FanQiang YangPublished in: SDM (2012)
Keyphrases
- matrix factorization
- collaborative filtering
- recommender systems
- data sparsity
- probabilistic matrix factorization
- nonnegative matrix factorization
- low rank
- contextual information
- negative matrix factorization
- stochastic gradient descent
- missing data
- factor analysis
- factorization methods
- recommendation systems
- item recommendation
- implicit feedback
- cold start problem
- data matrix
- user preferences
- variational bayesian
- recommendation quality
- factor matrices
- dimensionality reduction
- tensor factorization
- personalized recommendation
- multiscale
- pairwise