Two Efficient Algorithms for Approximately Orthogonal Nonnegative Matrix Factorization.
Bo LiGuoxu ZhouAndrzej CichockiPublished in: IEEE Signal Process. Lett. (2015)
Keyphrases
- nonnegative matrix factorization
- probabilistic latent semantic indexing
- negative matrix factorization
- matrix factorization
- data representation
- active set
- least squares
- nonnegative matrix
- spectral clustering
- principal component analysis
- document clustering
- original data
- sparsity constraints
- image processing
- objective function