Research Interests
Large language models, reinforcement learning, and diffusion models.
Personal Website
Hi, I’m Jiayi Fu.
I am a researcher working on large language models, reinforcement learning, and diffusion models. My biggest dream is to build a general-purpose agent that can learn to do anything.
- 3Papers
- 3Years of Research
Jiayi Fu
Researcher · Engineer · Pianist
Profile
Who I Am
I am a First-year PhD student at INSAIT, supervised by Prof. Yuxia Wang. I am also a amateur pianist, and I like watching football matches.
Highlights
- Empty for now
Education
Academic Background
2026 — Present
Ph.D. in Computer Science
INSAIT
Focus: Large language models, reinforcement learning, and diffusion models.
2022 — 2025
M.S. in Computer Science
Fudan University
Focus: Natural Language Processing, reinforcement learning, and watermarking.
2018 — 2022
B.Eng. in Computer Science and Technology
Harbin Institute of Technology
Operating systems, Database systems, Compilers, Computer Networks, etc.
Papers
Selected Publications
GumbelSoft: Diversified Language Model Watermarking via the GumbelMax-trick
We propose GumbelSoft, a novel language model watermarking method that leverages the GumbelMax-tric.
Reward Shaping to Mitigate Reward Hacking in RLHF
We propose a reward shaping method PAR to mitigate reward hacking in RLHF.
Experience
Research & Industry Experience
Research Intern
StepFun
Worked on LLM Post-training.
Teaching Assistant
Fudan University
Worked as a teaching assistant for the course "Operating Systems".
Media
Images, Video, and Audio
Sofia Photography
National Gallery.
Ordinary Road
The road of an ordinary people.
Sunset Road
A comfortable song for driving.
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