Preprint
Jul 2026
RCLUPPr: a new randomized CholeskyQR with LU preconditioning
In this work, we present the comprehensive rounding error analysis of RCLUPPr proposed in \cite{RCLUPP}, which is a novel randomized CholeskyQR-type algorithm performing LU decomposition with partial pivoting (LUPP decomposition) directly on the tall-skinny $X\in\mathbb{R}^{m\times n}$ with $m \ge n$ and $\mbox{rank}(X...
Haoran Guan, Zhenyu Zou, Yufeng Wei et al.
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