About Me
I am a Senior Research Scientist at Google DeepMind. I obtained my PhD from University of Southern California (USC), advised by Prof. Xiang Ren. I obtained my B.Eng. from Tsinghua University, advised by Prof. Zhiyuan Liu.
I work on improving the agentic capabilities of Gemini.
Selected Publications
(* indicates equal contribution; † indicates I am a corresponding author)
SkillOS: Learning Skill Curation for Self-Evolving Agents
Siru Ouyang, Jun Yan†, Yanfei Chen, Rujun Han, Zifeng Wang, Bhavana Dalvi Mishra, Rui Meng, Chun-Liang Li, Yizhu Jiao, Kaiwen Zha, Maohao Shen, Vishy Tirumalashetty, George Lee, Jiawei Han, Tomas Pfister, Chen-Yu Lee
NeurIPS 2026 [paper]
ReasoningBank: Scaling Agent Self-Evolving with Reasoning Memory
Siru Ouyang, Jun Yan†, I-Hung Hsu, Yanfei Chen, Ke Jiang, Zifeng Wang, Rujun Han, Long T. Le, Samira Daruki, Xiangru Tang, Vishy Tirumalashetty, George Lee, Mahsan Rofouei, Hangfei Lin, Jiawei Han, Chen-Yu Lee, Tomas Pfister
ICLR 2026 [paper] [code] [Google Research blog] Featured by [VentureBeat] [Andrej Karpathy’s podcast]
EnvHarness: Awakening Static Worlds for Agent Learning
Chengsong Huang, Zifeng Wang, Rujun Han, Jun Yan, Yanfei Chen, Zoey CuiZhu, Ke Jiang, Peng Xia, Han Yu, Yufan Zhuang, Yifei Ming, Jiaqi Pan, Bhavana Dalvi Mishra, Jiaxin Huang, Burak Gokturk, Tomas Pfister, Chen-Yu Lee
arXiv 2026 [paper]
In Prospect and Retrospect: Reflective Memory Management for Long-term Personalized Dialogue Agents
Zhen Tan, Jun Yan†, I-Hung Hsu, Rujun Han, Zifeng Wang, Long T. Le, Yiwen Song, Yanfei Chen, Hamid Palangi, George Lee, Anand Iyer, Tianlong Chen, Huan Liu, Chen-Yu Lee, Tomas Pfister
ACL 2025 [paper]
Backdooring Instruction-Tuned Large Language Models with Virtual Prompt Injection
Jun Yan, Vikas Yadav*, Shiyang Li*, Lichang Chen, Zheng Tang, Hai Wang, Vijay Srinivasan, Xiang Ren, Hongxia Jin
NAACL 2024 [paper] [project page]
AlpaGasus: Training A Better Alpaca with Fewer Data
Lichang Chen*, Shiyang Li*, Jun Yan, Hai Wang, Kalpa Gunaratna, Vikas Yadav, Zheng Tang, Vijay Srinivasan, Tianyi Zhou, Heng Huang, Hongxia Jin
ICLR 2024 [paper] [project page]
Technical Reports
Gemma 4 Technical Report
Gemma Team, Google
Technical Report, 2026 [paper]
Gemini 2.5: Pushing the Frontier with Advanced Reasoning, Multimodality, Long Context, and Next Generation Agentic Capabilities
Gemini Team, Google
Technical Report, 2025 [paper]
Education
University of Southern California
Ph.D. in Computer Science
2019 - 2024 Los Angeles, CA, U.S.
Tsinghua University
B.Eng. in Electronic Engineering
2015 - 2019 Beijing, China