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math.NA2026
On subspace-constrained preconditioning for randomized iterative methods
Yonghan Sun, Hou-Duo Qi, Deren Han +1
In this paper, we further investigate and refine the subspace-constrained preconditioning technique to enhance the theoretical and numerical convergence properties of randomized it…
math.NA2026
Linear convergence of Gearhart-Koshy accelerated Kaczmarz methods for tensor linear systems
Yijie Wang, Yonghan Sun, Deren Han +1
The generalized Gearhart-Koshy acceleration is a recent exact affine search technique designed for the method of cyclic projections onto hyperplanes, i.e., the Kaczmarz method. How…