Yizhen Zhang

I am a first-year master student at IIGroup in Tsinghua University, supervised by Prof. Yujiu Yang. I received my Bachelor's degree at Computer Science and Technology, Harbin Institute of Technology, Shenzhen.

Previously, I was honoured to work with Prof. Wenjie Pei in HITsz. I am currently working closely with Ruilin Luo ,Shuoshuo Zhang and Yang Ding at THU.

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profile photo
Education
THU logo Tsinghua University
M.Eng. in Artificial Intelligence (2024 - Now)
Advisor: Prof. Yujiu Yang
XDU logo Harbin Institute of Technology, Shenzhen
B.Eng. in Computer Science and Technology (2020 - 2024)
Advisor: Prof. Wenjie Pei
Research

My current research focuses on Multimodal Large Language Models (MLLMs), specifically revolutionizing reinforcement learning for the alignment of Vision-Language Models and continuously pushing the boundaries of their reasoning ability to unlock full potential in complex scenarios.

Publications (* denotes equal contribution)

profile photo See Less, See Right: Bi-directional Perceptual Shaping For Multimodal Reasoning
Shuoshuo Zhang*, Yizhen Zhang*, Jingjing Fu, Lei Song, Jiang Bian, Yujiu Yang, Rui Wang
Under Review
Preprint / Code


profile photo From Narrow to Panoramic Vision: Attention-Guided Cold Start Reshapes Multimodal Reasoning
Ruilin Luo*, Chufan Shi*, Yizhen Zhang*, Cheng Yang, Songtao Jiang, Tongkun Guan, Ruizhe Chen, Ruihang Chu, Peng Wang, Mingkun Yang, Yujiu Yang, Junyang Lin, Zhibo Yang, Rui Wang
Under Review
Preprint / Code


profile photo VideoZoomer: Reinforcement-Learned Temporal Focusing for Long Video Reasoning
Yang Ding*, Yizhen Zhang*, Xin Lai, Ruihang Chu, Yujiu Yang
Under Review
Preprint / Code


profile photo PixelCraft: A Multi-Agent System for High-Fidelity Visual Reasoning on Structured Images
Shuoshuo Zhang*, Zijian Li*, Yizhen Zhang, Jingjing Fu, Lei Song, Jiang Bian, Jun Zhang, Yujiu Yang, Rui Wang
Under Review
Preprint / Code


profile photo PeRL: Permutation-Enhanced Reinforcement Learning for Interleaved Vision-Language Reasoning
Yizhen Zhang*, Yang Ding*, Shuoshuo Zhang*, Xinchen Zhang, Haoling Li, Zhong-zhi Li, Peijie Wang, Jie Wu, Lei Ji, Yelong Shen, Yujiu Yang, Yeyun Gong
NeurIPS 2025
Preprint / Code


profile photo Teaching Your Models to Understand Code via Focal Preference Alignment
Jie Wu*, Haoling Li*, Xin Zhang*, Xiao Liu, Yangyu Huang, Jianwen Luo, Yizhen Zhang, Zuchao Li, Ruihang Chu, Yujiu Yang, Scarlett Li
EMNLP main 2025
Preprint / Code


profile photo Efficiently Building Large Language Models through Merging
Yizhen Zhang*, Yang Ding*, Jie Wu*, Yujiu Yang
NeurIPS 2024 LMC Oral
Preprint

Experience
bytedance logo Microsoft, NLC Group
Research Intern (Feb. 2025 - Present)
Topic: Multimodal Large Language Models Reasoning
Mentor: Lei Ji, Yeyun Gong, Yelong Shen
rednote logo Rednote, Communities Feed Team
Research Intern (Apr. 2024 - Aug. 2024)
Topic: Recommendation System & Computational Advertising
Honors & Awards
  • Neurips 2024 Large Language Model Merging Challenge (LMC)[link] Rank:1/150, 2024
  • CVPR 2023 workshop Image Matching Challenge [link] Silver medal, 2023