2 papers
math.NA2025
Randomized strong rank-revealing QR for column subset selection and low-rank matrix approximation
Laura Grigori, Zhipeng Xue
We discuss a randomized strong rank-revealing QR factorization that effectively reveals the spectrum of a matrix . This factorization can be used to address problems su…
cs.LG2024
Score-Based Variational Inference for Inverse Problems
Zhipeng Xue, Penghao Cai, Xiaojun Yuan +1
Existing diffusion-based methods for inverse problems sample from the posterior using score functions and accept the generated random samples as solutions. In applications that pos…