Any Circulant-Like Preconditioner for Multilevel Matrices Is Not Superlinear.
Stefano Serra CapizzanoEugene E. TyrtyshnikovPublished in: SIAM J. Matrix Anal. Appl. (2000)
Keyphrases
- iterative methods
- singular value decomposition
- least squares
- computationally expensive
- constrained optimization
- data matrix
- singular values
- pairwise comparison
- kronecker product
- database
- projection matrices
- iterative algorithms
- covariance matrices
- edge preserving
- fourier transform
- linear combination
- optimal solution
- case study
- image processing