I am now a 3rd year Ph.D. student in THUIR, Department of Computer Science and Technology in Tsinghua University, Beijing, China. My supervisor is Prof. Min Zhang.

Education

• Aug.2023 - present: Ph.D. student, Department of Computer Science and Technology, Tsinghua University, China.
• Aug.2018 - Jul.2023: B.E. Degree, Department of Computer Science and Technology, Tsinghua University, China.

Publications

• Yuanqing Yu, Zhefan Wang, Weizhi Ma, Shuai Wang, Chuhan Wu, Zhiqiang Guo, Min Zhang. StepTool: Enhancing Multi-Step Tool Usage in LLMs via Step-Grained Reinforcement Learning. The 34th ACM International Conference on Information and Knowledge Management. (CIKM 2025)

• Yuanqing Yu, Zhefan Wang, Chumeng Jiang, Xinyi Li, Jiayin Wang, Min Zhang. Intelligent Agents with Adaptive Knowledge Fusion for Personalized Recommendation. Companion Proceedings of the ACM on Web Conference 2025. (WWW Companion 2025) Online Version

• Chongming Gao, Ruijun Chen, Shuai Yuan, Kexin Huang, Yuanqing Yu, Xiangnan He. SPRec: Self-Play to Debias LLM-based Recommendation. Proceedings of the ACM on Web Conference 2025. (WWW 2025) Online Version

• Weiwen Liu*, Xu Huang*, Xingshan Zeng*, Xinlong Hao, Shuai Yu, Dexun Li, Shuai Wang, Weinan Gan, Zhengying Liu, Yuanqing Yu, et al. Toolace: Winning the points of llm function calling. The 13th International Conference on Learning Representations (ICLR 2025) Online Version

• Yuanqing Yu, Chongming Gao, Jiawei Chen, Heng Tang, Yuefeng Sun, Qian Chen, Weizhi Ma, Min Zhang. EasyRL4Rec: An Easy-to-use Library for Reinforcement Learning Based Recommender Systems. The 47th International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2024) (Resource)

• Zhefan Wang*, Yuanqing Yu* (Co-First Author), Wendi Zheng, Weizhi Ma, Min Zhang. MACRec: a Multi-Agent Collaboration Framework for Recommendation. The 47th International ACM SIGIR Conference on Research and Development in Information Retrieval. (SIGIR 2024) (Demo)

• Chenyang Wang, Yankai Liu, Yuanqing Yu, Weizhi Ma, Min Zhang, Yiqun Liu, Haitao Zeng, Junlan Feng, Chao Deng. Two-sided Calibration for Quality-aware Responsible Recommendation. The 17th ACM Conference on Recommender Systems. (RecSys 2023) Online Version

• Chenyang Wang, Yuanqing Yu, Weizhi Ma, Min Zhang, Chong Chen, Yiqun Liu, Shaoping Ma. Towards Representation Alignment and Uniformity in Collaborative Filtering. The 28th ACM SIGKDD Conference on Knowledge Discovery and Data Mining. (KDD 2022) Online Version

Honors and Awards

• Dec.2024: Overall Excellence Scholarship, Department of Computer Science and Technology, Tsinghua University.

• Jul.2023: Outstanding Graduate, Beijing.
• Jul.2023: Excellent Graduate, Tsinghua University.
• Dec.2022: Overall Excellence Scholarship, Tsinghua University.
• Dec.2021: Overall Excellence Scholarship, Tsinghua University.
• Dec.2019: Overall Excellence Scholarship, Tsinghua University.