Sparse approximation of multivariate functions from small datasets via weighted orthogonal matching pursuit.
Ben AdcockSimone BrugiapagliaPublished in: CoRR (2018)
Keyphrases
- sparse approximation
- orthogonal matching pursuit
- linear combination
- noise model
- compressed sensing
- sparse coding
- sparse representation
- gaussian process
- convex relaxation
- transform domain
- small number
- feature selection
- greedy algorithm
- multiscale
- marginal likelihood
- image reconstruction
- multistage
- compressive sensing
- regression model
- em algorithm
- image processing