← Search

Zhitong Xu

4 accepted papers

2025

Arbitrarily-Conditioned Multi-Functional Diffusion for Multi-Physics Emulation

ICML 2025poster

Modern physics simulation often involves multiple functions of interests, and traditional numerical approaches are known to be complex and computationally costly. While machine learning-based surrogate models can offer significant cost reductions, most focus on a single task, such as forward predict…

Cited by 1Source ↗PDF ↗Scholar ↗
2025

Invertible Fourier Neural Operators for Tackling Both Forward and Inverse Problems

AISTATS 2025poster

Fourier Neural Operator (FNO) is a powerful and popular operator learning method. However, FNO is mainly used in forward prediction, yet a great many applications rely on solving inverse problems. In this paper, we propose an invertible Fourier Neural Operator (iFNO) for jointly tackling the forwar…

Cited by 0Source ↗code ↗Scholar ↗
2025

Standard Gaussian Process is All You Need for High-Dimensional Bayesian Optimization

ICLR 2025oral

A long-standing belief holds that Bayesian Optimization (BO) with standard Gaussian processes (GP) --- referred to as standard BO --- underperforms in high-dimensional optimization problems. While this belief seems plausible, it lacks both robust empirical evidence and theoretical justification. To…

Cited by 49Source ↗PDF ↗Scholar ↗
2025

Toward Efficient Kernel-Based Solvers for Nonlinear PDEs

ICML 2025poster

We introduce a novel kernel learning framework toward efficiently solving nonlinear partial differential equations (PDEs). In contrast to the state-of-the-art kernel solver that embeds differential operators within kernels, posing challenges with a large number of collocation points, our approach el…

Cited by 1Source ↗PDF ↗Scholar ↗