Keyphrases
- principal component analysis
- principal components
- independent component analysis
- dimension reduction
- dimensionality reduction
- covariance matrix
- face recognition
- low dimensional
- feature extraction
- feature space
- highly correlated
- discriminant analysis
- linear discriminant analysis
- neural classifier
- random projections
- multiscale
- artificial intelligence
- face images
- probabilistic model
- optimal solution
- three dimensional
- negative matrix factorization
- lower dimensional
- databases