Dictionary Learning with Large Step Gradient Descent for Sparse Representations.
Boris MailhéMark D. PlumbleyPublished in: LVA/ICA (2012)
Keyphrases
- dictionary learning
- sparse representation
- sparse coding
- image super resolution
- group sparsity
- compressive sensing
- image classification
- signal processing
- negative matrix factorization
- sparsity constraints
- sparse codes
- face recognition
- high dimensional data
- loss function
- random projections
- feature extraction
- dimensionality reduction
- nearest neighbor
- test images
- semi supervised
- prior knowledge
- high dimensional