An efficient positive-definite block-preconditioned finite volume solver for two-sided fractional diffusion equations on composite mesh.
Ping-Fei DaiJinhong JiaHong WangQingbiao WuXiangcheng ZhengPublished in: Numer. Linear Algebra Appl. (2021)
Keyphrases
- positive definite
- diffusion equation
- anisotropic diffusion
- diffusion tensor
- kernel function
- covariance matrix
- scale space
- geometric structure
- kernel matrix
- partial differential equations
- noise removal
- semi parametric
- pattern recognition
- diffusion process
- kernel machines
- boundary conditions
- low rank
- image enhancement
- edge detection
- multiscale