Regularized split gradient method for nonnegative matrix factorization.
Henri LantériCéline TheysCédric RichardDavid MaryPublished in: ICASSP (2011)
Keyphrases
- gradient method
- nonnegative matrix factorization
- negative matrix factorization
- sparsity constraints
- matrix factorization
- least squares
- sparse representation
- document clustering
- principal component analysis
- data representation
- spectral clustering
- objective function
- optimization methods
- step size
- convergence rate
- genetic algorithm
- original data
- text mining
- natural language
- pattern recognition