Initialization of Nonnegative Matrix Factorization with Vertices of Convex Polytope.
Rafal ZdunekPublished in: ICAISC (1) (2012)
Keyphrases
- nonnegative matrix factorization
- convex hull
- hamiltonian cycle
- semidefinite
- probabilistic latent semantic indexing
- negative matrix factorization
- matrix factorization
- data representation
- nonnegative matrix
- least squares
- convex optimization
- principal component analysis
- original data
- sparsity constraints
- document clustering
- spectral clustering
- semi supervised
- convex sets
- convex relaxation
- objective function
- k means
- multiscale
- data sets
- sparse representation
- information extraction
- image segmentation