Publications

2025

On the Width Scaling of Neural Optimizers Under Matrix Operator Norms I: Making Operators Play Nice Together
Ruihan Xu, Jiajin Li, Yiping Lu

What is a Sketch-and-Precondition Derivation for Low-Rank Approximation? Inverese Power Error or Inverse Power Estimation?
Ruihan Xu, Yiping Lu
submitted

Randomized Iterative Solver as Iterative Refinement: A Simple Fix Towards Backward Stability
Ruihan Xu, Yiping Lu
Artificial Intelligence and Statistics (AISTATS) 2025

Online Dynamic Mode Decomposition via First-Order Feedback
Yuanlv Chen, Ruihan Xu, Yiping Lu

2024

Dynamics of a Two-Dimensional Slow–Fast Belousov–Zhabotinsky Model
Ruihan Xu, Ming Sun, Xiang Zhang
Qualitative Theory of Dynamical Systems 23.Suppl 1 (2024): 281.

Manuscripts

mixing on random regular graph with improved degree dependence
Ruihan Xu, Frederic Koehler
In preparation

Hit-and-Run via ensemble sample
Ruihan Xu, Yiping Lu
In preparation