Modeling Emerging, Evolving and Fading Topics Using Dynamic Soft Orthogonal NMF with Sparse Representation.
Yong ChenHui ZhangJunjie WuXingguang WangRui LiuMengxiang LinPublished in: ICDM (2015)
Keyphrases
- sparse representation
- negative matrix factorization
- dictionary learning
- sparse coding
- image classification
- sparsity constraints
- nonnegative matrix factorization
- random projections
- face recognition
- compressed sensing
- compressive sensing
- image patches
- sparse approximations
- signal processing
- data mining
- image representation
- basis vectors
- sparse reconstruction
- reconstruction error
- high dimensional data
- joint optimization
- pattern recognition
- neural network
- natural images
- high dimensional
- norm minimization