Xuhan Tong

Undergraduate Student Weiyang College Tsinghua University

I am an undergraduate student at Tsinghua University. My research interests lie in machine learning, particularly in the theoretical foundations of learning algorithms, including stability and generalization.

Xuhan Tong
Email: tongxh1204@gmail.com

About

I am broadly interested in Machine Learning. My current work investigates LLM stability and generalization. Currently, I am a undergraduate student at Tsinghua University, majoring in Software Engineering & Mathematics and Physics.

My recent work aims to provide a mathematical understanding of how LLMs perform reasoning and generalization, including analyses of in-context learning, prompting strategies, and hallucination in large language models.

During my studies, I have had the opportunity to be a research intern at the University of Wisconsin-Madison. I am fortunate to be advised by Prof. Jiawei Zhang.

Feel free to reach out — I am always happy to discuss research ideas or collaborations.

Research Interests

  • In-context Learning Theory
  • Chain-of-thought Reasoning
  • LLM Hallucination

Education

Undergraduate in Software Engineering & Mathematical Basic Sciences
Tsinghua University
2023 — Present
Research Intern in Computer Sciences
University of Wisconsin-Madison
2025 - 2026

Awards

  • Comprehensive Excellence Scholarship, Tsinghua University, 2025
  • Academic Excellence Scholarship, Tsinghua University, 2024
  • Scientific and Technological Innovation Scholarship, Tsinghua University, 2024

Publications

2026
Demonstrations, CoT, and Prompting: A Theoretical Analysis of ICL
Xuhan Tong, Y. Zeng, J. Zhang
Understanding Why Language Models Hallucinate: Testing Reasoning Against Priors
Yangfan Hu*, Xuhan Tong*, Haoyue Bai*, Xi Ding, Shashank Muralidhar Bharadwaj, Siyang Cao, Robert Nowak, Jiawei Zhang