Non-negative matrix factorization and sparse representation for sleep signal classification.
Mehrnaz ShokrollahiSridhar KrishnanPublished in: EMBC (2013)
Keyphrases
- sparse representation
- negative matrix factorization
- dictionary learning
- image classification
- nonnegative matrix factorization
- sparse coding
- high dimensional data
- face recognition
- image patches
- reconstruction error
- dimensionality reduction
- image representation
- regularized least squares
- signal processing
- subspace learning
- neural network
- sparsity constraints
- bag of words
- image features
- data points
- decision trees
- image processing
- machine learning
- data mining