A subspace-orbit randomized algorithm for quaternion tensor singular value decomposition based on Qt-product

•We investigate the third-order quaternion tensor singular value decomposition.•We propose a subspace-orbit randomized algorithm based on block Krylov iteration.•This algorithm can achieve the trade-off between computation time and accuracy.•We provide the deterministic and expected approximation er...

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Bibliographic Details

Published in:	Applied mathematics and computation Vol. 512; p. 129780
Main Authors:	Liu, Yonghe, Wu, Fengsheng, Miao, Jifei, Li, Chaoqian
Format:	Journal Article
Language:	English
Published:	Elsevier Inc 01.03.2026
Subjects:	Qt-product Quaternion tensor singular value decomposition Randomized block Krylov iteration Subspace-orbit random projection Quaternion tensor singular value decomposition Randomized block Krylov iteration Qt-product Subspace-orbit random projection
ISSN:	0096-3003
Online Access:	Get full text
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