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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 Medical Foundation Models. I currently focus on building powerful reasoning (Multimodal) Large Language Models (LLMs) for medical tasks.

Research Interests

News

Publications

  1. 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

  2. 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

  3. preprint
    More Thinking, Less Seeing? Assessing Amplified Hallucination in Multimodal Reasoning Models
    Chengzhi Liu, Zhongxing Xu, Qingyue Wei, Juncheng Wu, James Zou, Xin Eric Wang, Yuyin Zhou, Sheng Liu
    ArXiv preprint, 2025.
    PDF Code Project Page

  4. preprint
    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
    ArXiv preprint, 2025.
    PDF Code

  5. preprint
    EpiFoundation: A Foundation Model for Single-Cell ATAC-seq via Peak-to-Gene Alignment
    Juncheng Wu, Changxin Wan, Zhicheng Ji, Yuyin Zhou, Wenpin Hou
    bioRxiv preprint, 2025.
    PDF Code

  6. Neurips
    DDR: Exploiting Deep Degradation Response as Flexible Image Descriptor
    Juncheng Wu, Zhangkai Ni, Hanli Wang, Wenhan Yang, Yuyin Zhou, Shiqi Wang
    Annual Conference on Neural Information Processing Systems (Neurips), 2024.
    PDF Code

  7. 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

  8. 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

  9. preprint
    Restorer: Removing Multi-Degradation with All-Axis Attention and Prompt Guidance
    Jiawei Mao, Juncheng Wu, Yuyin Zhou, Xuesong Yin, Yuanqi Chang
    ArXiv preprint, 2024.
    PDF

  10. CVPR
    Misalignment-Robust Frequency Distribution Loss for Image Transformation
    Zhangkai Ni, Juncheng Wu*, Zian Wang*, Wenhan Yang, Hanli Wang, Lin Ma
    IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2024.
    PDF Code

  11. preprint
    m1: Unleash the Potential of Test-Time Scaling for Medical Reasoning with Large Language Models
    Xiaoke Huang, Juncheng Wu, Hui Liu, Xianfeng Tang, Yuyin Zhou
    ArXiv preprint, 2025.
    PDF Code

  12. preprint
    STAR-1: Safer Alignment of Reasoning LLMs with 1K Data
    Zijun Wang, Haoqin Tu, Yuhan Wang, Juncheng Wu, Jieru Mei, Brian R. Bartoldson, Bhavya Kailkhura, Cihang Xie
    ArXiv preprint, 2025.
    PDF Code

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