A hierarchical latent topic model based on sparse coding.
Wenjun ZhuLiqing ZhangQianwei BianPublished in: Neurocomputing (2012)
Keyphrases
- sparse coding
- latent topics
- dictionary learning
- sparse representation
- natural images
- unsupervised learning
- generative model
- linear combination
- topic models
- image classification
- latent dirichlet allocation
- discriminative dictionary
- image representation
- sparse codes
- visual words
- image patches
- feature space
- bag of words
- mixture model
- high dimensional
- topic modeling
- object recognition
- multiscale
- model selection
- machine learning
- higher order
- supervised learning
- nearest neighbor
- face recognition