• I’m a first-year Ph.D. student and research intern at Shanghai AI Laboratory, honored to be advised by Prof. Dahua Lin. Prior to that, I received the B.Eng. degree in Artificial Intelligence (GuoZhi Class Programme, held by Prof. Xiaoou Tang and Prof. Cewu Lu) from Shanghai Jiao Tong University in 2025. I have also worked with Prof. Junchi Yan at the SJTU-ReThinkLab.

• 🔍 My current research interest covers 2D AIGC and VLM. Previously, I worked on Computer Vision and AI4Science.

• 🎓 I am actively seeking for a joint Ph.D. opportunity abroad. Please check my Personal Website and Curriculum Vitae.

• 📫 Email is the preferred way to contact me: bujiazi001 [AT] sjtu [dot] edu [dot] cn.

🏅️ (Co-) First Author Publications

[NeurIPS 2025] HiFlow: Training-free High-Resolution Image Generation with Flow-Aligned Guidance
Jiazi Bu*, Pengyang Ling*, Yujie Zhou*, Pan Zhang, Tong Wu, Xiaoyi Dong, Yuhang Zang, Yuhang Cao, Dahua Lin, Jiaqi Wang

[CVPR 2025] ByTheWay: Boost Your Text-to-Video Generation Model to Higher Quality in a Training-free Way
Jiazi Bu*, Pengyang Ling*, Pan Zhang, Tong Wu, Xiaoyi Dong, Yuhang Zang, Yuhang Cao, Dahua Lin, Jiaqi Wang

[arXiv 2025] DiCache: Let Diffusion Model Determine Its Own Cache
Jiazi Bu*, Pengyang Ling*, Yujie Zhou*, Yibin Wang, Yuhang Zang, Dahua Lin, Jiaqi Wang

[ICLR 2025] MotionClone: Training-Free Motion Cloning for Controllable Video Generation
Pengyang Ling*, Jiazi Bu*, Pan Zhang, Xiaoyi Dong, Yuhang Zang, Tong Wu, Huaian Chen, Jiaqi Wang, Yi Jin

[ICCV 2025] Light-A-Video: Training-free Video Relighting via Progressive Light Fusion
Yujie Zhou*, Jiazi Bu*, Pengyang Ling*, Pan Zhang, Tong Wu, Qidong Huang, Jinsong Li, Xiaoyi Dong, Yuhang Zang, Yuhang Cao, Anyi Rao, Jiaqi Wang, Li Niu

[arXiv 2025] G²RPO: Granular GRPO for Precise Reward in Flow Models
Yujie Zhou*, Pengyang Ling*, Jiazi Bu*, Yibin Wang, Yuhang Zang, Jiaqi Wang, Li Niu, Guangtao Zhai

🥈 Co-Author Publications

[arXiv 2025] UniGenBench++: A Unified Semantic Evaluation Benchmark for Text-to-Image Generation
Yibin Wang*, Zhimin Li*, Yuhang Zang*, Jiazi Bu, Yujie Zhou, Chunyu Wang, Qinglin Lu, Cheng Jin, Jiaqi Wang

[arXiv 2025] Pref-GRPO: Pairwise Preference Reward-based GRPO for Stable Text-to-Image Reinforcement Learning
Yibin Wang*, Zhimin Li*, Yuhang Zang*, Yujie Zhou, Jiazi Bu, Chunyu Wang, Qinglin Lu, Cheng Jin, Jiaqi Wang

[NeurIPS 2024] Unveiling The Matthew Effect Across Channels: Assessing Layer Width Sufficiency via Weight Norm Variance
Yiting Chen, Jiazi Bu, Junchi Yan

[AAAI 2024] ViTree: Single-Path Neural Tree for Step-Wise Interpretable Fine-Grained Visual Categorization
Danning Lao, Qi Liu, Jiazi Bu, Junchi Yan, Wei Shen

[SCIENCE CHINA Information Sciences] Drug-drug Interaction Prediction via Hierarchical Structure Modeling
Huaijin Wu, Jiazi Bu, Nianzu Yang, Yao Sun, Haitao Song, Ning Liu, Junchi Yan

Pengyang Ling (Prev Ph.D. @ USTC), Yujie Zhou (Ph.D. @ SJTU), Kailing Wang (Ph.D. @ HKU)