Ellipsoidal rounding for nonnegative matrix factorization under noisy separability.
Tomohiko MizutaniPublished in: J. Mach. Learn. Res. (2014)
Keyphrases
- nonnegative matrix factorization
- probabilistic latent semantic indexing
- negative matrix factorization
- data representation
- matrix factorization
- active set
- least squares
- nonnegative matrix
- spectral clustering
- principal component analysis
- dimensionality reduction
- approximation algorithms
- sparsity constraints
- document clustering
- missing data
- objective function
- sparse representation
- image processing
- linear programming
- similarity measure