Spectral clustering of high-dimensional data exploiting sparse representation vectors.
Sen WuXiaodong FengWenjun ZhouPublished in: Neurocomputing (2014)
Keyphrases
- sparse representation
- basis vectors
- dictionary learning
- sparse coding
- face recognition
- image classification
- image patches
- compressive sensing
- compressed sensing
- signal processing
- reconstruction error
- negative matrix factorization
- image representation
- sparse reconstruction
- regularized least squares
- random projections
- piecewise smooth
- joint optimization
- sparsity constraints
- high dimensional data
- sparse approximations
- machine learning
- data analysis
- dimensionality reduction
- test images
- norm minimization