Keyphrases
- covariance matrices
- source localization
- sparse representation
- joint optimization
- covariance matrix
- dictionary learning
- maximum likelihood
- sparse coding
- wireless sensor networks
- gaussian distribution
- gaussian mixture model
- vector space
- distance measure
- dimensionality reduction
- face recognition
- image classification
- image patches
- gaussian mixture
- feature vectors
- signal processing
- image representation
- linear classifiers
- high dimensional data
- principal component analysis
- test images
- manifold learning
- sound source
- image data
- sample size
- feature extraction