4 papers · 1 filter
Convergence Analysis of Two Alternating Iterative Schemes for Tucker Decomposition
Ren-Cang Li, Li Wang, Mei Yang
The higher-order orthogonal iteration (HOOI) and the alternating subspace iteration (ASI) are two popular numerical methods for computing the Tucker decomposition of a multiple-mod…
An NPDo Approach for Tensor Block-Diagonalization
Ren-Cang Li, Li Wang, Mei Yang
This paper is concerned with Partial Tensor Block-Diagonalization of a multiway tensor by orthonormal matrices so that the extracted block-diagonal part optimally represents the te…
An NPDo Approach for Principal Joint SVD-type Block Diagonalization
Ren-Cang Li, Li Wang, Mei Yang
This paper is concerned with partial Joint SVD-type Block Diagonalization of several matrices so that the extracted diagonal parts collectively optimally assume part of the total m…
Flexible Modified LSMR Method for Least Squares Problems
Mei Yang, Gul Karaduman, Ren-Cang Li
LSMR is a widely recognized method for solving least squares problems via the double QR decomposition. Various preconditioning techniques have been explored to improve its efficien…