Zhichen Zeng

Portrait of Zhichen Zeng

I obtained my Ph.D. in Computer Science from the University of Illinois Urbana-Champaign, advised by Prof. Hanghang Tong. My research interests lie in LLM and agents, personalization, and geometric ML.

Before Ph.D., I obtained my M.S. in Computer Science degree from the University of Illinois Urbana-Champaign and B.Eng. in Automation from Zhejiang University.

I’m currently seeking research-oriented full-time opportunities. Please feel free to reach out if my background aligns with your interests.

news

Nov, 2026 One paper accepted @ TMLR 2026.
Aug, 2026 Two papers accepted @ EMNLP 2026.
Jul, 2026 Two papers accepted @ COLM 2026.
May, 2026 Joined Amazon as an Applied Scientist Intern.
May, 2026 One paper accepted @ ACL 2026.
Apr, 2026 One paper accepted @ ICML 2026.
Feb, 2026 One paper accepted @ TMLR 2025.
Jan, 2026 One paper accepted @ ICLR 2026.
Jan, 2026 One paper accepted @ EACL 2026.
Jan, 2026 One paper accepted @ WWW 2026.
Jan, 2026 One paper accepted @ npj Artificial Intelligence.
Aug, 2025 Two papers accepted @ CIKM 2025.
May, 2025 Joined Meta as a Research Scientist Intern.
Jan, 2025 Two papers accepted @ WWW 2025.
Jan, 2025 One paper accepted @ ICLR 2025.
Nov, 2024 One paper accepted @ KDD 2025.
Sept, 2024 One paper accepted @ NeurIPS 2024.
May, 2024 Three papers accepted @ ICML 2024.
May, 2024 One paper accepted @ KDD 2024.
May, 2024 Joined Meta as a Research Scientist Intern.
Jan, 2024 Two papers accepted @ WWW 2024.
Dec, 2023 One paper accepted @ AAAI 2024.
Apr, 2023 One paper accepted @ ICML 2023.
Jan, 2023 One paper accepted @ WWW 2023.

selected publications

  1. Preprint 2026
    One Model, Many Minds: Unlocking Multi-Agent Synergy in a Single Agent via Mixture of Roles
    Zhichen Zeng, Huiyuan Chen, Jingru Cheng,
    and more authorsJuan Zha, Ming Liu, Ying Chen, Xiyuan Yang, Chaosheng Dong, Haiyang Zhang, Hanghang Tong
  2. EMNLP 2026
    Subspace Alignment for Vision-Language Model Test-time Adaptation
    Zhichen Zeng, Wenxuan Bao, Xiao Lin,
    and more authorsRuizhong Qiu, Tianxin Wei, Xuying Ning, Yuchen Yan, Chen Luo, Monica Xiao Cheng, Jingrui He, Hanghang Tong
  3. EACL 2026
    Harnessing Model Consistency for Robust Test-Time LLM Ensemble
    Zhichen Zeng*, Qi Yu*, Xiao Lin,
    and more authorsRuizhong Qiu, Xuying Ning, Tianxin Wei, Yuchen Yan, Jingrui He, Hanghang Tong
  4. TMLR 2026
    Pave Your Own Path: Graph Gradual Domain Adaptation on Fused Gromov-Wasserstein Geodesics
    Zhichen Zeng, Ruizhong Qiu, Wenxuan Bao,
    and more authorsTianxin Wei, Xiao Lin, Yuchen Yan, Tarek F Abdelzaher, Jiawei Han, Hanghang Tong
  5. npj AI 2026
    Flow Matching Meets Biology and Life Science: A Survey
    Zihao Li*, Zhichen Zeng*, Xiao Lin*,
    and more authorsFeihao Fang, Yanru Qu, Zhe Xu, Zhining Liu, Xuying Ning, Tianxin Wei, Ge Liu, Hanghang Tong, Jingrui He
  6. Preprint 2025
    Hierarchical LoRA MoE for Efficient CTR Model Scaling
    Zhichen Zeng, Mengyue Hang, Xiaolong Liu,
    and more authorsXiaoyi Liu, Xiao Lin, Ruizhong Qiu, Tianxin Wei, Zhining Liu, Siyang Yuan, Chaofei Yang, Yiqun Liu, Hang Yin, Jiyan Yang, Hanghang Tong
  7. CIKM 2025
    InterFormer: Effective Heterogeneous Interaction Learning in CTR Prediction
    Zhichen Zeng*, Xiaolong Liu*, Mengyue Hang*,
    and more authorsXiaoyi Liu*, Qinghai Zhou, Chaofei Yang, Yiqun Liu, Yichen Ruan, Laming Chen, Yuxin Chen, Yujia Hao, Jiaqi Xu, Jade Nie, Xi Liu, Buyun Zhang, Wei Wen, Siyang Yuan, Kai Wang, Wen-Yen Chen, Yiping Han, Huayu Li, Chunzhi Yang, Bo Long, Philip S. Yu, Hanghang Tong, Jiyan Yang
  8. WWW 2025
    Joint Optimal Transport and Embedding for Network Alignment
    Qi Yu*, Zhichen Zeng*, Yuchen Yan,
    and more authorsLei Ying, R. Srikant, Hanghang Tong
  9. ICML 2024
    Graph Mixup on Approximate Gromov–Wasserstein Geodesics
    Zhichen Zeng, Ruizhong Qiu, Zhe Xu,
    and more authorsZhining Liu, Yuchen Yan, Tianxin Wei, Lei Ying, Jingrui He, Hanghang Tong
  10. AAAI 2024
    Hierarchical Multi-Marginal Optimal Transport for Network Alignment
    Zhichen Zeng, Boxin Du, Si Zhang,
    and more authorsYinglong Xia, Zhining Liu, Hanghang Tong
  11. ICML 2023
    Generative Graph Dictionary Learning
    Zhichen Zeng, Ruike Zhu, Yinglong Xia,
    and more authorsHanqing Zeng, Hanghang Tong
  12. WWW 2023
    PARROT: Position-Aware Regularized Optimal Transport for Network Alignment
    Zhichen Zeng, Si Zhang, Yinglong Xia,
    and more authorsHanghang Tong

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