Joint Sparse Representation of Brain Activity Patterns Related to Perceptual and Cognitive Components of a Speech Comprehension Task.
Mahdi RamezaniPurang AbolmaesumiKris MarbleH. MacDonaldIngrid S. JohnsrudePublished in: PRNI (2012)
Keyphrases
- sparse representation
- activity patterns
- dictionary learning
- joint optimization
- sparse coding
- cognitive process
- face recognition
- image patches
- compressive sensing
- compressed sensing
- image representation
- reconstruction error
- regularized least squares
- piecewise smooth
- sparse reconstruction
- sparsity constraints
- sparse approximations
- cognitive processes
- image classification
- random projections
- high dimensional data
- signal processing
- multiscale
- negative matrix factorization
- human brain
- nearest neighbor
- image segmentation
- data mining