Group Sparsity in Nonnegative Matrix Factorization.
Jingu KimRenato D. C. MonteiroHaesun ParkPublished in: SDM (2012)
Keyphrases
- nonnegative matrix factorization
- group sparsity
- low rank
- matrix factorization
- structured sparsity
- sparse coding
- negative matrix factorization
- dictionary learning
- sparse representation
- data representation
- least squares
- collaborative filtering
- principal component analysis
- spectral clustering
- document clustering
- singular value decomposition
- original data
- recommender systems
- natural images
- semi supervised
- objective function
- learning problems
- missing data
- linear combination
- unsupervised learning
- image classification