Preconditioning by Gram matrix approximation for diffusion-convection-reaction equations with discontinuous coefficients.
Gheorghe JuncuConstantin PopaPublished in: Math. Comput. Simul. (2002)
Keyphrases
- matrix approximation
- diffusion processes
- least squares
- diffusion equation
- diffusion process
- linear systems
- approximation error
- theoretical guarantees
- maximum entropy
- low rank matrix approximation
- linear combination
- anisotropic diffusion
- wavelet coefficients
- bregman divergences
- partial differential equations
- low rank matrix
- scale space
- primal dual
- denoising
- dimensionality reduction
- convex optimization
- nearest neighbor