Learning Sparse Representation by K-SVD for Stock Classification.
Jian ZhangShuo ZhangWuyi ZhangKary KangPublished in: CSE (2014)
Keyphrases
- dictionary learning
- sparse representation
- sparse coding
- image classification
- group sparsity
- compressed sensing
- compressive sensing
- supervised learning
- reconstruction error
- regularized least squares
- image patches
- face recognition
- high dimensional data
- sparse reconstruction
- joint optimization
- test images
- learning algorithm
- signal processing
- pattern recognition
- unsupervised learning
- nearest neighbor
- multiscale
- decision trees
- linear combination
- active learning
- random projections
- feature space
- support vector
- sparse learning
- feature extraction