Non-negative Matrix Factorization, Convexity and Isometry.
Nikolaos VasiloglouAlexander G. GrayDavid V. AndersonPublished in: SDM (2009)
Keyphrases
- negative matrix factorization
- vector field
- nonnegative matrix factorization
- matrix factorization
- principal component analysis
- document clustering
- sparse representation
- spectral clustering
- constrained least squares
- information retrieval
- sparsity constraints
- text mining
- pattern recognition
- signal processing
- information retrieval systems
- high dimensional
- multiscale
- machine learning
- latent semantic space