Han (Felix) Yan

Hi, I am Han (Felix) Yan (严涵), a fourth year undergraduate student studying at the The Chinese University of Hong Kong, Shenzhen. I'm an incoming CS PhD student at New York University (NYU) Courant Institute School of Mathematics, Computing, and Data Science in Fall 2026. I was also an exchange student at the University of Notre Dame. I am fortunated to be advised by Prof. Jianwei Huang at the NCEL lab, Prof. Meng Jiang at the DM² lab and Prof. Benyou Wang at the CUHKSZ Freedom AI lab.

My research interest lies in GenAI (e.g. MLLM/LLM/) Safety, AI Privacy, Trustworthy AI, CoT, Reinforcement Learning Reward Model and etc. Currently, I am exploring CoT and RL Reward Model Design.

Please feel free to drop me an Email for any form of communication or collaboration!

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We introduce HiMed, a Hindi reasoning medical corpus and benchmark suite covering both Western and Indian medicine. We further propose HiMed-8B, a Hindi-form medical reasoning LLM, through the design of decaying scaffolding reward. Extensive experiments demonstrate improvement in Hindi medical reasoning performance and reduction in the English--Hindi accuracy gap. Ablation studies validate the contribution of each training stage and reward component.

A comprehensive survey of inference-time control techniques for trustworthy LLMs. We organize methods into four families — guardrails, internal-representation steering, multi-agent verification, and evaluation — and analyze open challenges across reliability, safety, fairness, privacy, and explainability.

We propose a unified framework that enforces dual-space smoothness in representation and parameter spaces to improve robustness and balance unlearning metrics.

We propose an approach that diversifies grid representations and includes a rigorous evaluation process using multi-modal large language models (MLLMs) to ensure output consistency.

We propose a large language model-assisted workflow for small-scale synthetic power grid generation, verification, and visualization.

• I've always been surrounded by wonderful friends, collaborators, and advisors, and I try to maintain an optimistic outlook. If you're having a tough time and would like someone to talk to, feel free to reach out!
• I like pop music and reading science fiction. The Three-Body Problem is my favorite science fiction series.

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