Keyphrases
- classification method
- sparse representation
- clustering algorithm
- dictionary learning
- high dimensional data
- sparse coding
- compressive sensing
- image classification
- support vector machine
- k means
- face recognition
- text classification
- classification algorithm
- knn
- image patches
- unsupervised learning
- joint optimization
- reconstruction error
- image representation
- compressed sensing
- support vector machine svm
- random projections
- signal processing
- k nearest neighbor
- high dimensional
- document clustering
- pattern recognition
- image segmentation
- dimensionality reduction
- sparse coefficients
- neural network
- natural images
- nearest neighbor
- data points
- active learning
- data mining