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most citedSLRQA: A Sparse Low-Rank Quaternion Model for Color Image Processing with Convergence Analysis

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math.OC2026

An Inexact Riemannian Gradient Descent Algorithm on the Stiefel Manifold with One Newton-Schulz Iteration

Yuqiu Su, Wen Huang

In this paper, we propose an inexact Riemannian gradient descent algorithm on the Stiefel manifold (IRGS-StieONS) using an adaptive step size, where the ``inexact'' refers to the i…