Keyphrases
- random projections
- sparse matrix
- projection matrix
- measurement matrix
- compressive sensing
- compressed sensing
- original data
- sparse representation
- dimensionality reduction
- dimension reduction
- random sampling
- principal component analysis
- signal reconstruction
- image reconstruction
- hash functions
- singular value decomposition
- low dimensional
- document clustering
- high dimensional data
- high dimensionality
- machine learning
- image classification
- upper bound
- high dimensional
- multiscale
- face recognition
- feature selection
- learning algorithm