2024.09 - Present
Ph.D. Student, School of Computer Science
Zhiyu Xu
I am a second-year Ph.D. student at the Language Computing and Machine Learning Group (LANCO), Institute of Computational Linguistics (ICL), School of Computer Science, Peking University, advised by Prof. Xu Sun.
Prior to this, I received my B.Eng. degree in Data Science and Big Data Technology from Tongji University in 2024.
My research interests include multimodal large language models, video understanding, and multimodal agents.
I am actively seeking research internship opportunities focused on multimodal large language models. I am also open to research collaborations in related areas. Please feel free to contact me at zhiyu_xu@stu.pku.edu.cn.
Publications
Investigating Cross-Modal Skill Injection: Scenarios, Methods, and Hyperparameters
Zhiyu Xu, Lean Wang, Yuanxin Liu, Lei Li, Hao Zhou, Fandong Meng, Jie Zhou, and Xu Sun
ACL 2026 Main Conference.
AdaRisk: Risk-Adaptive Deep Reinforcement Learning for Vulnerable Nodes Detection
Fan Li, Zhiyu Xu, Dawei Cheng, and Xiaoyang Wang
IEEE TKDE 2024.
Does Explicit Reasoning Help in Finance? A Study of Chain-of-Thought for Financial NLP
Ziyue Wang, Zhiyu Xu, Yi Liu, Yuxiang Wang, Ruihan Bao, Keiko Harimoto, and Xu Sun
AFA Workshop @ ICLR 2026.
Modeling Interactions Between Stocks Using LLM-Enhanced Graphs for Volume Prediction
Zhiyu Xu, Yi Liu, Yuchi Wang, Ruihan Bao, Keiko Harimoto, and Xu Sun
FinNLP-FNP-LLMFinLegal Workshop @ COLING 2025.
Education
2020.09 - 2024.06
B.Eng., Data Science and Big Data Technology
Internships
2024 - 2025
Research Intern
2023 - 2024
Intern
Awards
2024.06
Shanghai Outstanding Graduate
2022.12
Second Place, CCF Big Data and Computing Intelligence Contest
2021.12
National Scholarship for Undergraduates