A Split-and-Merge Dictionary Learning Algorithm for Sparse Representation.
Subhadip MukherjeeChandra Sekhar SeelamantulaPublished in: CoRR (2014)
Keyphrases
- sparse representation
- learning algorithm
- dictionary learning
- sparse coding
- image classification
- face recognition
- signal processing
- image patches
- sparse codes
- compressed sensing
- sparse approximations
- dimensionality reduction
- reconstruction error
- machine learning
- piecewise smooth
- image representation
- high dimensional data
- learning problems
- joint optimization
- sparse reconstruction
- random projections
- compressive sensing
- sparse coefficients
- negative matrix factorization
- learned dictionary
- regularized least squares
- supervised learning
- learning tasks
- training samples
- pattern recognition
- training data
- test images
- active learning
- sparsity constraints
- image retrieval
- high dimensional
- feature selection