Yifei Lu (卢逸飞)

Research on LLM Agents, Tool Learning, and Reinforcement Learning

I obtained my master's degree from Northeastern University under the supervision of Prof. Feiliang Ren. I am currently working at Qiantang Credit. Previously, I conducted research and engineering internships at Meituan(AI Search), Tencent(AI Lab & Hunyuan Digital Human), and DeepLang AI.

My research focuses on large language model agents, tool learning, and reinforcement learning. I am especially interested in building autonomous agents that can invoke tools, learn from interaction, and complete long-horizon tasks that require planning, reasoning, and reliable execution.

Email: lyfei1126@gmail.com / Google Scholar

Portrait of Yifei Lu
📷 Caught on camera in Teriberka

News

  • Apr. 2026: One paper was accepted to ACL 2026.
  • Jan. 2026: One paper was accepted to ICASSP 2026.
  • Aug. 2025: One paper was accepted to EMNLP 2025. See you in Suzhou, China.
  • May. 2025: Two papers were accepted to ACL 2025. See you in Vienna, Austria.

Experiences

  • 2026.01-Present
    Qiantang Credit
  • 2025.06-2026.01
    Algorithm Intern, Meituan AI Search
  • 2024.09-2025.05
    Research Intern, Tencent AI Lab & Hunyuan Digital Human
  • 2024.04-2024.08
    Algorithm Intern, DeepLang AI

Selected Publications and Preprints

CogDual: Enhancing Dual Cognition of LLMs via Reinforcement Learning with Implicit Rule-Based Rewards

Cheng Liu*, Yifei Lu*, Fanghua Ye†, Jian Li†, Xingyu Chen, Feiliang Ren, Zhaopeng Tu, Xiaolong Li

Conference on Empirical Methods in Natural Language Processing (EMNLP), 2025 Main Conference

[arXiv] / [GitHub Code]

CodeTool: Enhancing Programmatic Tool Invocation of LLMs via Process Supervision

Yifei Lu*, Fanghua Ye*, Jian Li†, Qiang Gao, Cheng Liu, Haibo Luo, Nan Du, Xiaolong Li, Feiliang Ren†

Conference on Annual Meeting of the Association for Computational Linguistics (ACL), 2025 Main Conference

[arXiv] / [GitHub Code]