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math.NA2023
CPQR-based randomized algorithms for generalized CUR decompositions
Guihua Zhang, Hanyu Li, Yimin Wei
Based on the column pivoted QR decomposition, we propose some randomized algorithms including pass-efficient ones for the generalized CUR decompositions of matrix pair and matrix t…
math.NA2021
Componentwise perturbation analysis for the generalized Schur decomposition
Guihua Zhang, Hanyu Li, Yimin Wei
By defining two important terms called basic perturbation vectors and obtaining their linear bounds, we obtain the linear componentwise perturbation bounds for unitary factors and…