Yucheng Shi

史淯城
Tencent AI Lab, Seattle — Research Scientist
University of Georgia — Ph.D. in Computer Science
Advised by Prof. Ninghao Liu

My research focuses on Agent Reinforcement Learning and Self-Evolving AI — building agents that autonomously improve through environmental interaction and self-generated experience.

Email · GitHub · LinkedIn
Yucheng Shi

News

Feb 2026Joined Tencent AI Lab (Seattle) full-time as Research Scientist.
Jan 5, 2026Successfully defended my Ph.D. dissertation at the University of Georgia. Ph.D.
Jan 2026Preprint: MobileGUI-RL — online RL for mobile GUI agents. arXiv
May 2025Papers accepted at ICML 2025 and BIBM 2025. ICML
Apr 2025Received Dissertation Completion Award Assistantship for 2025–2026. Award
Mar 2025Passed my Comprehensive Exam.
Jan 2025Three papers accepted at ICLR 2025. ICLR
Nov 2024MKRAG received Distinguished Paper Award at AMIA 2024. Award

Experience

Tencent AI Lab, Seattle Feb 2026 – Present
Research Scientist
  • Agent RL and self-evolving AI.
    • Netflix Sep – Dec 2025
    ML Research Intern  ·  Dr. Ying Li, Dr. Yu Wang
  • Content recommendation with large language models.
    • Tencent AI Lab, Seattle May – Aug 2025
    Research Scientist Intern  ·  Dr. Wenhao Yu
  • MobileGUI-RL: online RL for mobile GUI agent automation.
  • Multimodal AI for mobile UI understanding.
    • Harvard Medical School May – Sep 2024
    Student Researcher  ·  Dr. Xiang Li
  • Post-trained LLaMA-3 70B on 6.5M+ radiology reports.
  • Built SearchRAG for medical question answering.

    • Selected Publications full list →

    Enhancing Cognition and Explainability of Multimodal Foundation Models with Self-Synthesized Data
    Yucheng Shi, Quanzheng Li, Jin Sun, Xiang Li, Ninghao Liu
    ICLR 2025  ·  Paper  ·  Code  ·  Model  5k+ HF downloads
    CORTEX: Concept-Oriented Token Explanation in Vector-Quantized Generative Models
    Tianze Yang*, Yucheng Shi*, Mengnan Du, Xuansheng Wu, Qiaoyu Tan, Jin Sun, Ninghao Liu
    ICML 2025  ·  Paper  ·  Code
    Black-box Backdoor Defense via Zero-shot Image Purification
    Yucheng Shi, Mengnan Du, Xuansheng Wu, Zihan Guan, Jin Sun, Ninghao Liu
    NeurIPS 2023  ·  Paper  ·  Code
    MKRAG: Medical Knowledge Retrieval Augmented Generation for Medical Question Answering
    Yucheng Shi*, Shaochen Xu*, Tianze Yang*, Zhengliang Liu, Tianming Liu, Quanzheng Li, Xiang Li, Ninghao Liu
    AMIA 2024  ·  Paper  ·  Code  Dist