Jiarui's Homepage

Email: jiarui14 [AT] illinois [DOT] edu
I am a first-year CS PhD student in Siebel School of Computing and Data Science, University of Illinois, Urbana-Champaign (UIUC), with a great fortune to be supervised by Prof. Tong Zhang.
I obtained a bachelor’s degree of engineering (B.Eng.) from Yao Class, Tsinghua University.
My current research interests mainly focus on reinforcement learning, large language models, especially autonomous agents learning, and the interdisciplinary fields.
News
May 08, 2025 | We released GVM - Gradient Variance Minimization, a framework to improve the data sampling efficiency in LLMs math reasoning. Starting from rejection sampling, we generalize our pipeline to RL algorithms like GRPO, and present corresponding theoretical analysis for our algorithm. |
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Apr 15, 2025 | We wrote a report analyzing what makes GRPO “stand out” for math reasoning, with some understanding and ablation studies to compare different algorithms for LLMs reasoning training. |
Mar 05, 2025 | We release FANS - Formal Answer Selection for Natural Language Reasoning Uinsg Lean4, enhancing test-time math answer selection using formal language. |
Aug 21, 2024 | I started my PhD journey in the CS School of UIUC. ![]() ![]() |
Selected Publications
- preprintFANS – Formal Answer Selection for Natural Language Math Reasoning Using Lean4arXiv preprint arXiv:2503.03238, 2025
Latest Posts
Jan 07, 2025 | Japan travel journal with photo collections |
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