Chaoran Cheng

Siebel School of Computing and Data Science (SSCDS)
University of Illinois Urbana-Champaign (UIUC)

profile-2.jpg

Hi! I am Chaoran Cheng, a fifth-year Ph.D. candidate in computer science at the University of Illinois Urbana-Champaign. I am advised by Prof. Ge Liu. Before beginning my Ph.D., I worked with Prof. Jian Peng at Helixon (now Earendil Labs).

My research develops generative models for AI4Science, with an emphasis on theory-driven methods whose desired behaviors can be mathematically characterized or guaranteed. I work across continuous, discrete, Riemannian, and variable-length settings to build unified generative frameworks for biomolecular design, including protein sequence-structure co-design, motif scaffolding, and post-training protein design models for closed-loop computational and experimental discovery.

My current work with NVIDIA GenAIR focuses on post-training protein co-design models using 137 million phage-display measurements from Proteina-Complexa. Our goal is to develop a practical post-training recipe that helps close the gap between in silico design and wet-lab success. In 2026, I received the Grainger College of Engineering’s Ross J. Martin Award for outstanding research achievement as the award’s sole graduate student recipient across the college.

At UIUC, I also contribute to the MMLI initiative on machine learning for molecular design and the CABBI initiative on sustainable bioproducts. I earned my summa cum laude B.S. in computer science from Peking University’s Turing Class, after beginning my undergraduate studies in chemistry.

News

Jul 13, 2026 Our new work, Variable-Length Generative Protein Design via Generalized Poisson Flow, introduces GPFlow, a unified framework that learns protein length jointly with structure and sequence instead of fixing it before sampling.
Apr 29, 2026
Four years at UIUC have flown by, and I am incredibly honored to mark a major milestone: receiving the Grainger College of Engineering's Ross J. Martin Award for outstanding research achievement. 🏆

As the award's sole graduate student recipient across the college this year, this recognition means the world to me. It affirms my journey through interdisciplinary AI4Science research, from theory-driven generative modeling to practical biomolecular design. My early roots in chemistry and longstanding interest in mathematics have finally come full circle.
Chaoran Cheng receiving the 2026 Ross J. Martin Award
Oct 2, 2025 Our latest work of Riemannian Consistency Model (RCM) rigorously extends consistency models to Riemannian manifolds utilizing core mathematical concepts of covariant derivative and its corresponding Christoffel symbols. RCM has been accepted to NeurIPS 2025, and I look forward to discussions in San Diego! Check out the details at arXiv.
Nov 6, 2024
My contributing work on AI²BMD during my internship at MSRA has been accepted to Nature. In this work, we extend AI-assisted molecular dynamics (MD) simulation to large-scale protein systems with ab initio accuracy. Check out MSR's introductory blog on why MD can be fundamental to various AI4Science domains.
Dec 7, 2022
Check out this post on the Tensor Field Network!
Nov 30, 2022
Get a glimpse of Cézanne and the revolution of modern art.

Selected Publications

Full publication list here.

  1. Variable-Length Generative Protein Design via Generalized Poisson Flow
    Chaoran Cheng*, Zhanghan Ni*, Yanru Qu*, Yuxin Chen, Ruihan Guo, Jiajun Fan, and Ge Liu
    arXiv preprint arXiv:2607.09039 2026
  2. A-CODE: Fully Atomic Protein Co-Design with Unified Multimodal Diffusion
    Chaoran Cheng*, Jiaqi Guan*, Milong Ren, Chengyue Gong, Cong Liu, Xinshi Chen, Ge Liu, and Wenzhi Xiao
    arXiv preprint arXiv:2605.03360 2026
  3. Accurate de novo Design of Peptides from Programming Biophysical Landscape
    Mingyu Li, Yini Liu, Jie Zhong, Xinchao Shi, Jiqing Zheng, Kai Wang, Yunxia Cui, Chaoran Cheng, Shijin Li, Xiangzhe Kong, Shaoning Li, Miaojie Xv, Chunhao Zhu, Xiaobing Lan, He Yang, Kewei Chang, Zhenyu An, Shizhang Wan, Xiuyan Yang, Qiancheng Shen, H. Eric Xu, Zihua Wang, Lei Liu, Youwen Zhuang, Jianzhu Ma, and Jian Zhang
    bioRxiv 2026
  4. MutAtlas: A PDB-Wide Energy-Guided Atlas of Protein Mutation Effects
    Ruihan Guo*, Chaoran Cheng*, Zhanghan Ni, Neil He, Bangji Yang, and Ge Liu
    In Proceedings of the 43rd International Conference on Machine Learning 2026
  5. Riemannian Consistency Model
    Chaoran Cheng*, Yusong Wang*, Yuxin Chen, Xiangxin Zhou, Nanning Zheng, and Ge Liu
    In Advances in Neural Information Processing Systems 2025
  6. Training-Free Guided Flow Matching with Optimal Control
    Luran Wang, Chaoran Cheng, Yizhen Liao, Yanru Qu, and Ge Liu
    In The Thirteenth International Conference on Learning Representations 2025
  7. Ab Initio Characterization of Protein Molecular Dynamics with AI2BMD
    Tong Wang, Xinheng He, Mingyu Li, Yatao Li, Ran Bi, Yusong Wang, Chaoran Cheng, Xiangzhen Shen, Jiawei Meng, He Zhang, Haiguang Liu, Zun Wang, Shaoning Li, Bin Shao, and Tie-Yan Liu
    Nature 2024
  8. Neural P³M: A Long-Range Interaction Modeling Enhancer for Geometric GNNs
    Yusong Wang*, Chaoran Cheng*, Shaoning Li*, Yuxuan Ren, Bin Shao, Ge Liu, Pheng-Ann Heng, and Nanning Zheng
    In Advances in Neural Information Processing Systems 2024
  9. Full-Atom Peptide Design Based on Multi-Modal Flow Matching
    Jiahan Li, Chaoran Cheng, Zuofan Wu, Ruihan Guo, Shitong Luo, Zhizhou Ren, Jian Peng, and Jianzhu Ma
    In Proceedings of the 41st International Conference on Machine Learning 2024
  10. Categorical Flow Matching on Statistical Manifolds
    Chaoran Cheng, Jiahan Li, Jian Peng, and Ge Liu
    In Advances in Neural Information Processing Systems 2024
  11. Equivariant Neural Operator Learning with Graphon Convolution
    Chaoran Cheng, and Jian Peng
    In Advances in Neural Information Processing Systems 2023
  12. Equivariant Point Cloud Analysis via Learning Orientations for Message Passing
    Shitong Luo, Jiahan Li, Jiaqi Guan, Yufeng Su, Chaoran Cheng, Jian Peng, and Jianzhu Ma
    In Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition 2022