Keyphrases
- principal component analysis
- decision support system
- independent component analysis
- principal components
- source signals
- dimensionality reduction
- signal processing
- covariance matrix
- dimension reduction
- high frequency
- frequency domain
- singular value decomposition
- feature extraction
- face recognition
- non stationary
- discriminant analysis
- low dimensional
- face images
- feature space
- negative matrix factorization
- random projections
- feature selection
- linear discriminant analysis