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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 1SourcePDFScholar
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 0SourcecodeScholar
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 4SourcePDFScholar
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 1SourcePDFScholar