Keyphrases
- negative matrix factorization
- document clustering
- nonnegative matrix factorization
- spectral clustering
- clustering algorithm
- clustering method
- unsupervised feature selection
- probabilistic latent semantic analysis
- low dimensional
- unsupervised learning
- sparse representation
- matrix factorization
- constrained least squares
- high dimensional data
- principal component analysis
- manifold learning
- data clustering
- k means
- high dimensional
- multiscale