👀 About Me
Hello! I am a master student majoring in software engineering in the Chinese Information Processing Laboratory at the Institute of Software Chinese Academy of Sciences, focusing on large language models, with an expected graduation in June 2027. I received my B.S. degree in Computer Science and Technology from Hangzhou Normal University in June 2024 (GPA ranked 1/342), simultaneously receiving the highest award, the Presidential Scholarship. Besides, I was also honored to be awarded the Ma Yun Youth Leader Award(马云青春领袖奖) and the title of Top 10 Outstanding Student(校十佳大学生). In the same year, I was admitted to study for a M.S. degree in the Institute of Software, Chinese Academy of Sciences, fortunate to be co-advised by Prof. Xianpei Han and Assoc. Prof. Yaojie Lu without entrance examination.
My research focuses on realistic user and behavior simulation, reliable multi-turn interaction, and evaluation of LLM-based agents. Currently, I am working on building User Agents that capture complex human decision-making processes and behavioral dynamics.
My internship experience spans post-training for LLM-based customer service assistants and realistic user simulation at Kuaishou. Along the way, I have worked on OmniBehavior, a benchmark built from authentic user interaction traces for evaluating long-horizon user behavior simulation; and OmniSimulator for training language models to simulate realistic user behavior across diverse business scenarios. Besides, I led the research on ConsistentChat for improving dialogue consistency in long multi-turn conversations, and toolkit such as ZServe, an adaptive framework for efficient LLM serving in production environments.
If you are interested in my research or potential collaborations, please feel free to reach out to me at Email: [email protected] or WeChat: 15867066921 ~🎉
🔥 News
- 2026.05: 🔥 We release the complete OmniBehavior dataset and code! Please check them out and feel free to use them in your research.
- 2026.05: 🎉 Our CoCoNUTS is accepted by ACL 2026! Our MemSearcher is accepted by findings of ACL 2026! Our LiveMCPBench is accepted by KDD 2026!
- 2026.04: 🔥 Our OmniBehavior paper is released! The first open-source benchmark based on real users, featuring long-horizon, cross-commercial-scenario, heterogeneous behavior traces of Kuaishou platform.
- 2025.10: 🎉 Our ConsistentChat is selected as Oral presentation at EMNLP 2025! See you in Suzhou!
- 2025.08: 🎉 Our ConsistentChat is accepted by EMNLP 2025!
- 2025.08: 🎉 Our ShortV is accepted by ICCV 2025!
📝 Publications
Towards Real-world Human Behavior Simulation: Benchmarking Large Language Models on Long-horizon, Cross-scenario, Heterogeneous Behavior Traces
Jiawei Chen, Ruoxi Xu, Boxi Cao, Ruotong Pan, Yunfei Zhang, Yifei Hu, Yong Du, Tingting Gao, Yaojie Lu, Yingfei Sun, Xianpei Han, Le Sun, Xiangyu Wu, Hongyu Lin
首个基于真实用户的长序列、跨场景、异构的大模型行为模拟基准。
[Paper] [Code] [Project Page] [Dataset] [小红书]
OmniSimulator: Aligning Small Language Models for Authentic Heterogeneous Behavior Modeling
Jiawei Chen, Ruoxi Xu, Boxi Cao, Zhuoqun Li, Ruotong Pan, Yunfei Zhang, Zhirui Yang, Jingyan Chen, Tingting Gao, Han Li, Yaojie Lu, Xianpei Han, Le Sun, Xiangyu Wu, Hongyu Lin
基于真实用户行为训练的通用用户模拟器，在7B的小模型上实现了超越 Claude-Sonnet-4.5 的行为模拟效果。
[Paper]
ZServe: An Adaptive Framework for Optimizing Large Language Models Serving in Heterogeneous Infrastructures
Taosong Fang, Jiawei Chen, Zhengzhao Ma, Yaojie Lu, Hongyu Lin, Kaijie Zhou, Jia Zheng, Xianpei Han, Le Sun
[Paper]
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LiveMCPBench: Can Agents Navigate an Ocean of MCP Tools?
Guozhao Mo, Wenliang Zhong, Jiawei Chen, Qianhao Yuan, Xuanang Chen, Yaojie Lu, Hongyu Lin, Ben He, Xianpei Han, Le Sun
KDD’26.
[Paper] [Code] [Project Page] [Huggingface]
PraMem: Practice-derived Experiential Memory for Long-horizon Behavior Prediction
Zhuoqun Li, Boxi Cao, Jiawei Chen, Hanshu Zhou, Ruoxi Xu, Guiping Jiang, Ruotong Pan, Tingting Gao, Han Li, Xiangyu Wu, Hongyu Lin, Yaojie Lu, Xianpei Han, Le Sun
[Paper]
Beyond Surface Style: Aligning Multi-Turn User Simulators with Behavioral Consistency
Geng Chen, Ruotong Pan, Zhirui Yang, Jiawei Chen, Boxi Cao, Zhang yunfei, Zhuoqun Li, Chongyuan Chen, Zheng Yang, Hongyu Lin, Xiangyu Wu, Tingting Gao, Han Li
[Paper]
ShortV: Efficient Multimodal Large Language Models by Freezing Visual Tokens in Ineffective Layers
Qianhao Yuan, Qingyu Zhang, Yanjiang Liu, Jiawei Chen, Yaojie Lu, Hongyu Lin, Jia Zheng, Xianpei Han, Le Sun
ICCV’25.
[Paper]
MemSearcher: Training LLMs to Reason, Search and Manage Memory via End-to-End Reinforcement Learning
Qianhao Yuan, Jie Lou, Zichao Li, Jiawei Chen, Yaojie Lu, Hongyu Lin, Le Sun, Debing Zhang, Xianpei Han
Findings of ACL 2026.
[Paper]
Navigating the Infinite Dynamic Web Space: Effective In-Context Exploration via Cognitive Multi-Agent Collaboration
Guozhao Mo, Yanjiang Liu, Yafei Shi, Jiawei Chen, Yang Li, Yaojie Lu, Hongyu Lin, Ben He, Le Sun, Bo Zheng, Xianpei Han
EACL’26.
[Paper]
🎖 Honors and Awards
- 2026.05 Outstanding Student Leader(优秀学生干部), University of Chinese Academy of Sciences.
- 2025.11 Highlight poster of 4th National Large Model and Generation Conference, Chinese Information Processing Society of China.
- 2025.09 EMNLP Oral.
- 2024.06 Outstanding Graduate named by Zhejiang(省优秀毕业生).
- 2024.06 Presidential Scholarship(校长奖学金).
- 2023.12 National Scholarship(国家奖学金), Ministry of Education of China.
- 2023.06 Ma Yun Youth Leader Award & Top 10 Outstanding Students(马云青春领袖奖·十佳大学生), 马云教育基金会.
📖 Educations
- 2024.09 - now, M.S. student, Institute of Software, Chinese Academy of Sciences.
- 2020.09 - 2024.06, B.S. in Computer Science and Technology, Hangzhou Normal University.
💻 Internships
- 2025.09 - now, LLM Research Intern, Foundation Model and Application Team, Kuaishou Technology, China.
- Adviser: Xiangyu Wu
- Research Focus: User agent for business scenarios, post-training and evaluation.
- 2023.10 - 2024.08, Research Intern, Institute of Software, Chinese Academy of Sciences, China.
- Adviser: Yaojie Lu
- Research Focus: research on enhancing LLMs’ ability through RAG, SFT, RLHF ,etc.
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2024.05 - 2024.08, Application Intern, 影刀RPA, China
- 2021.09 - 2024.06, Application Intern, Research Center of Health Management System, Ministry of Education, China.