Matrix-free constructions of circulant and block circulant preconditioners.
Chao YangEsmond G. NgPawel A. PenczekPublished in: Numer. Linear Algebra Appl. (2004)
Keyphrases
- iterative methods
- condition number
- linear algebra
- least squares
- coefficient matrix
- fourier transform
- block wise
- computationally expensive
- regression model
- constrained optimization
- interior point methods
- discrete fourier transform
- regularization methods
- covariance matrix
- singular value decomposition
- linear systems
- iterative algorithms
- signal processing
- neural network