Title
Golub-Kahan bidiagonalization for ill-conditioned tensor equations with applications.
Abstract
This paper is concerned with the solution of severely ill-conditioned linear tensor equations. These kinds of equations may arise when discretizing partial differential equations in many space-dimensions by finite difference or spectral methods. The deblurring of color images is another application. We describe the tensor Golub-Kahan bidiagonalization (GKB) algorithm and apply it in conjunction with Tikhonov regularization. The conditioning of the Stein tensor equation is examined. These results suggest how the tensor GKB process can be used to solve general linear tensor equations. Computed examples illustrate the feasibility of the proposed algorithm.
Year
DOI
Venue
2020
10.1007/s11075-020-00911-y
NUMERICAL ALGORITHMS
Keywords
DocType
Volume
Linear tensor operator equation,Ill-posed problem,Tikhonov regularization,Golub-Kahan bidiagonalization
Journal
84.0
Issue
ISSN
Citations 
SP4
1017-1398
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Fatemeh Panjeh Ali Beik1223.81
Khalide Jbilou200.34
Mehdi Najafi-Kalyani300.68
Lothar Reichel445395.02