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Juncheng Wu

Ph.D. Student
University of California, Santa Cruz
jwu418 (at) ucsc.edu


About Me

I am a Ph.D. student at VLAA Lab in University of California, Santa Cruz. I am fortunate to work with Prof. Yuyin Zhou and Cihang Xie. I received bachelor degree in Tongji University, where I am fortunate to be advised by Prof. Zhangkai Ni.

My research interest lies in Agentic AI and Generative AI for Healthcare. I currently focus on building powerful reasoning and agentic (Multimodal) Large Language Models (LLMs) for medical and clinical tasks.

Research Interests

Agentic AI, Large Language Models, Vision-Language Models, Generative AI for Healthcare.

News

Selected Publications

* indicates equal contribution. The full list is available on Google Scholar.

Language Models for Healthcare

  1. ICML
    MedReason: Eliciting Factual Medical Reasoning Steps in LLMs via Knowledge Graphs
    Juncheng Wu*, Wenlong Deng*, Xingxuan Li, Sheng Liu, Taomian Mi, Yifan Peng, Ziyang Xu, Yi Liu, Hyunjin Cho, Chang-In Choi, Yihan Cao, Hui Ren, Xiang Li, Xiaoxiao Li, Yuyin Zhou
    GFM Workshop @ International Conference on Machine Learning (ICML), 2026. (Oral)
    PDF Code

  2. ICLR
    MedTrinity-25M: A Large-scale Multimodal Dataset with Multigranular Annotations for Medicine
    Yunfei Xie*, Ce Zhou*, Lang Gao*, Juncheng Wu*, Xianhang Li, Hong-Yu Zhou, Sheng Liu, Lei Xing, James Zou, Cihang Xie, Yuyin Zhou
    The Thirteenth International Conference on Learning Representations (ICLR), 2025.
    PDF Code Project Page

  3. preprint
    MedFrameQA: A Multi-Image Medical VQA Benchmark for Clinical Reasoning
    Suhao Yu*, Haojin Wang*, Juncheng Wu*, Cihang Xie, Yuyin Zhou
    ArXiv preprint, 2025.
    PDF Code Project Page

  4. preprint
    Knowledge or Reasoning? A Close Look at How LLMs Think Across Domains
    Juncheng Wu*, Sheng Liu, Haoqin Tu, Hang Yu, Xiaoke Huang, James Zou, Cihang Xie, Yuyin Zhou
    ArXiv preprint, 2025.
    PDF Code Project Page

  5. preprint
    A Preliminary Study of o1 in Medicine: Are We Closer to an AI Doctor?
    Yunfei Xie*, Juncheng Wu*, Haoqin Tu*, Siwei Yang*, Bingchen Zhao, Yongshuo Zong, Qiao Jin, Cihang Xie, Yuyin Zhou
    ArXiv preprint, 2024.
    PDF Project Page

Agentic Language Models

  1. ICML
    ClinSeekAgent: Automating Multimodal Evidence Seeking for Agentic Clinical Reasoning
    Juncheng Wu*, Letian Zhang*, Yuhan Wang*, et al., Yuyin Zhou
    AIWILD Workshop @ International Conference on Machine Learning (ICML), 2026.
    PDF Project Page

  2. preprint
    Harness Updating Is Not Harness Benefit: Disentangling Evolution Capabilities in Self-Evolving LLM Agents
    Minhua Lin*, Juncheng Wu*, et al., Hanqing Lu
    ArXiv preprint, 2026.
    PDF Code

Multimodal Language Models

  1. CVPR
    All You Need Are Random Visual Tokens? Demystifying Token Pruning in VLLMs
    Yahong Wang*, Juncheng Wu*, et al., Yuyin Zhou
    IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2026.
    PDF Code

  2. ICML
    From Seeing to Thinking: Decoupling Perception and Reasoning Improves Post-Training of Vision-Language Models
    Juncheng Wu, Hardy Chen, Haoqin Tu, Xianfeng Tang, Freda Shi, Hui Liu, Hanqing Lu, Cihang Xie, Yuyin Zhou
    International Conference on Machine Learning (ICML), 2026.
    PDF Project Page

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