Keyphrases
- sparse coding
- mobile apps
- dictionary learning
- natural images
- sparse representation
- image classification
- linear combination
- unsupervised learning
- sparse codes
- image representation
- generative model
- mobile applications
- image patches
- high dimensional
- feature space
- business models
- higher order
- input image
- small number
- computer vision
- bag of words
- visual words
- data sets
- information retrieval
- smart phones
- m learning
- face recognition
- web documents
- mobile devices
- active learning
- low dimensional
- co occurrence