Sparse representation and overcomplete dictionary learning for anomaly detection in electrocardiograms.
Tomasz AndrysiakPublished in: Neural Comput. Appl. (2020)
Keyphrases
- anomaly detection
- sparse representation
- dictionary learning
- sparse coding
- image classification
- face recognition
- image super resolution
- negative matrix factorization
- high dimensional data
- sparse codes
- unsupervised learning
- image representation
- dimensionality reduction
- group sparsity
- compressive sensing
- random projections
- image patches
- joint optimization
- single image super resolution
- signal processing
- test images
- image processing
- pattern recognition
- sparsity constraints
- sparse representation based classification