Keyphrases
- matrix factorization
- collaborative filtering
- recommender systems
- nonnegative matrix factorization
- real valued
- redescription mining
- matrix multiplication
- data sparsity
- negative matrix factorization
- low rank
- data analysis
- clustering method
- principal component analysis
- parallel algorithm
- high dimensional data
- dimensionality reduction
- linear subspace
- high dimensional
- feature space
- face recognition