Hi, I’m Yu Li (LiYu), a first-year PhD student at the University of Science and Technology of China (USTC), advised by Lijun Wu, Feng Zhao, and Dahua Lin. My research focuses on data analysis for large language models, reasoning enhancement, and reinforcement learning.

I previously studied Information Security at Wuhan University (WHU) and conducted undergraduate research in the NIS&P Lab under Qian Wang. I’m always happy to connect and discuss research ideas or potential collaborations—feel free to reach out.

📝 Publications

Y. Li, W. Li, X. Gao, M. Sun, X. Wang, Q. Pei, & L. Wu. SPARK: Skeleton-Guided Reasoning Synthesis from Large-Scale Scientific Literature. Submitted to EMNLP 2026
M. Sun*, Y. Li*, Z. Yu, S. Zhang, & W. Ye. Support Vector Rubrics: Closing the Gap Between Self-Generated and Human Rubrics. Submitted to EMNLP 2026
Y. Li, X. Shang, Q. Pei, Y. Zhu, X. Gao, H. Lin, Z. Zhong, Z. Pan, Z. Liu, X. Wang, C. He, D. Lin, F. Zhao, & L. Wu. Tracing the Roots: A Multi-Agent Framework for Uncovering Data Lineage in Post-Training LLMs. Main of ACL 2026 · Oral🔥 [Paper]
Z. Pan*, Q. Pei*, Y. Li, Q. Sun, Z. Tang, H. V. Zhao, C. He, & L. Wu. REST: Stress Testing Large Reasoning Models by Asking Multiple Problems at Once. Main of ACL 2026 [Paper]
M. Sun*, Y. Li*, Y. Liu, B. Du, & Y. Ge. InverTune: Removing Backdoors from Multimodal Contrastive Learning Models via Trigger Inversion and Activation Tuning. Network and Distributed System Security (NDSS) Symposium 2026 · Oral🔥 [Paper]
Y. Li*, Z. Pan*, H. Lin*, M. Sun, C. He, & L. Wu. Can one domain help others? a data-centric study on multi-domain reasoning via reinforcement learning. arXiv preprint arXiv:2507.17512 [Paper]
Q. Pei*, L. Wu*, Z. Pan, Y. Li, H. Lin, C. Ming, X. Gao, C. He, & R. Yan. Mathfusion: Enhancing mathematical problem-solving of llm through instruction fusion. Main of ACL 2025 [Paper]
Y. Li, Q. Pei, M. Sun, H. Lin, C. Ming, X. Gao, J. Wu, C. He, & L. Wu. Cipherbank: Exploring the boundary of LLM reasoning capabilities through cryptography challenges. Findings of ACL 2025 [Paper]
Z. Pan, Y. Li, H. Lin, Q. Pei, Z. Tang, W. Wu, C. Ming, H. V. Zhao, C. He, & L. Wu. Lemma: Learning from Errors for Mathematical Advancement in LLMs. Findings of ACL 2025 [Paper]

🔧 Projects

2025.04 - 2025.10, OpenDataArena: Fair, Open, and Transparent Arena for Data — Benchmarking Dataset Value [Project] [Paper]

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📃 Awesome Repos

🏆 Competition Awards

2nd Place.🎖 Internal Reasoning in the NeurIPS 2025 CURE-Bench Competition 2025.10
Third Prize. C/C++ Programming at the 15th National LanQiao Cup Competition Software Competition 2024.06
First Prize.🎖 University Group A in C/C++ Programming at the 15th LanQiao Cup Competition Software Competition in Hubei 2024.04
Second Prize. China Undergraduate Mathematical Contest in Modeling 2023.09
First Prize🎖. The 16th NATIONAL COLLEGE STUDENT INFORMATION SECURITY CONTEST 2023.08
First Prize.🎖 The 15th “Huazhong Cup” College Student Mathematical Modeling Challenge 2023.05
Meritorious Winner.🎖 2023 Mathematical Contest In Modeling 2023.04
First Prize.🎖 2023 “Huashu Cup” International Mathematical Contest in Modeling 2023.02
Second Prize. The 14th National College Student Mathematics Competition in Hubei Division 2022.11
Second Prize. The 3rd Whu CARTOVISION Map Design Competition 2022.10

🥇 Scholarships and Honors

2024.09 National Scholarship (Award Rate: 0.2% national-wide) Ministry of Education, China
2023.09 National Scholarship (Award Rate: 0.2% national-wide) Ministry of Education, China
2022.09 National Scholarship (Award Rate: 0.2% national-wide) Ministry of Education, China
2024.10 Merit Student (Award Rate: 10% school-wide) Wuhan University
2023.10 Merit Student (Award Rate: 10% school-wide) Wuhan University
2022.10 Merit Student (Award Rate: 10% school-wide) Wuhan University
2025.06 Outstanding Graduate Wuhan University
2025.05 Outstanding Undergraduate Thesis Wuhan University
2023.12 First Prize for Advanced Individual in Learning (Award Rate:GPA Top Three) School of Cyber Science and Engineering
2023.12 Advanced individuals in scientific and technological innovation School of Cyber Science and Engineering
2023.10 First Class Scholarship of WHU (Award Rate: 5% school-wide) Wuhan University
2022.09 Second Class Scholarship of WHU (Award Rate: 10% school-wide) Wuhan University

📖 Educations

2025.09 - now, Ph.D. Student, University of Science and Technology of China (USTC), Hefei, Anhui, China.
2021.09 - 2025.06, Undergraduate, Wuhan University (WHU), Wuhan, Hubei, China.
2018.09 - 2021.06, Senior Middle School, Zhengzhou No. 7 Middle School, Zhengzhou Henan.
2015.09 - 2018.06, Junior Middle School, High-tech Zone Experimental Middle School, Zhengzhou Henan.