About Me

Hi, everyone! Welcome to Yan Sun (孙彦)’s personal website.

I am a Ph.D. candidate in SGEMS lab, School of Computing, National University of Singapore (NUS), advised by Prof. Stanley Kok. Prior to this, I graduated from the Chinese University of Hong Kong, Shenzhen, under the guidance of Prof. Jicong Fan. I have been honored with Google PhD Fellowship!

My research interests span algorithms in large language models (LLMs), reinforcement learning (RL), machine learning and their applications. I have worked on graph-level tasks, including graph kernels and anomaly detection.

News

• 2025.10: Paper on self-improving code agent accepted by WITS'25! 🎉
• 2025.10: Paper on modeling proactive web agent accepted by ICIS’25! 🎉
• 2025.09: PREPO [Github Repo] [Poster] was accepted at NeurIPS’25 Workshop on Efficient Reasoning. 🎉
• 2025.09: IcePop has been released to enable more stable RL training for LLMs. 🙌
• 2025.09: I have been selected to participate in the 12th Heidelberg Laureate Forum in Heidelberg, Germany this September! 🫡
• 2025.08: PREPO has been released for data-efficient RL training for LLMs! 🚀
• 2025.02: I received Research Achievement Award from School of Computing, NUS! 🙏
• 2025.01: UMKL-G on graph kernel was accepted by ICLR’25! 🎉
• 2024.11: Awarded Google PhD Fellowship 2024 (Algorithms and Theory track) 🙏
• 2024.10: Passed my qualifying exam! 🙏
• 2024.10: Paper on evaluating LLM bias accepted by ICIS’24! 🎉
• 2024.01: DO2HSC on abnomaly detection and MMD-GK on graph kernel were accepted as spotlight by ICLR’24! Thanks to my co-authors! 🎉🎉
• 2023.08: Embark my Ph.D. journey in NUS! 😄
• 2023.07: LaptSNE on dimensionality reduction was accepted by TKDD! Thanks to my co-authors! 🎉

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In my spare time, I enjoy music 🎵, books 📖 , food 😋.