Annotating web images using NOVA: NOn-conVex group spArsity.
Fei WuYing YuanYong RuiShuicheng YanYueting ZhuangPublished in: ACM Multimedia (2012)
Keyphrases
- web images
- group sparsity
- structured sparsity
- low rank
- sparse coding
- convex optimization
- image search
- dictionary learning
- convex optimization problems
- visual features
- image annotation
- image classification
- sparse representation
- web pages
- discriminative power
- compressive sensing
- image collections
- group lasso
- generative model
- natural images
- efficient optimization
- training set
- unsupervised learning
- linear combination