Evaluating Complex Sparse Representation of Hypervectors for Unsupervised Machine Learning.
Dilantha HaputhanthriEvgeny OsipovSachin KahawalaDaswin De SilvaThimal KempitiyaDamminda AlahakoonPublished in: IJCNN (2022)
Keyphrases
- sparse representation
- machine learning
- dictionary learning
- sparse coding
- face recognition
- unsupervised learning
- signal processing
- compressive sensing
- image classification
- supervised learning
- sparse approximations
- regularized least squares
- compressed sensing
- random projections
- reconstruction error
- test images
- high dimensional data
- image patches
- image representation
- dimensionality reduction
- piecewise smooth
- joint optimization
- text classification
- negative matrix factorization
- learning algorithm
- kernel methods
- data analysis
- training data
- feature selection
- sparsity constraints
- sparse learning
- data sets