Sparse and Transformation-Invariant Hierarchical NMF.
Sven RebhanJulian EggertHorst-Michael GroßEdgar KörnerPublished in: ICANN (1) (2007)
Keyphrases
- negative matrix factorization
- nonnegative matrix factorization
- geometric transformations
- sparsity constraints
- sparse representation
- affine transformation
- hierarchical structure
- high dimensional
- hierarchical model
- sparse data
- moment invariants
- coefficient matrix
- basis vectors
- affine invariant
- dictionary learning
- image transformations
- tensor factorization
- sparse coding
- unsupervised learning