Keyphrases
- nonnegative matrix factorization
- sparsity constraints
- tensor factorization
- probabilistic latent semantic indexing
- matrix factorization
- negative matrix factorization
- data representation
- spectral clustering
- least squares
- active set
- nonnegative matrix
- principal component analysis
- document clustering
- sparse representation
- original data
- high dimensional
- computer vision
- factor matrices
- face recognition
- clustering method
- text mining
- pairwise
- natural language
- pattern recognition
- similarity measure