Twitter Geolocation and Regional Classification via Sparse Coding.
Miriam ChaYoungjune GwonH. T. KungPublished in: ICWSM (2015)
Keyphrases
- sparse coding
- dictionary learning
- image classification
- object category recognition
- sparse representation
- natural images
- unsupervised learning
- pattern recognition
- feature extraction
- linear combination
- feature space
- group sparsity
- decision trees
- generative model
- image patches
- model selection
- image representation
- machine learning
- single image super resolution
- text classification
- object recognition
- data sets
- support vector
- co occurrence
- computer vision
- spatial pyramid matching
- small number
- training set