Tianyi Xu

Researcher at the Institute for Intelligent Computing (IIC), Shanghai Jiao Tong University.

My research focuses on the intersection of Large Language Models (LLMs) and Operations Research (OR).

Email: crimsonflag@sjtu.edu.cn

Publications

• PhotoBench: Beyond Visual Matching Towards Personalized Intent-Driven Photo Retrieval

  Tianyi Xu, Rong Shan, Junjie Wu, Jiadeng Huang, Teng Wang, Jiachen Zhu, Wenteng Chen, Minxin Tu, Quantao Dou, Zhaoxiang Wang, Changwang Zhang, Weinan Zhang, Jun Wang, Jianghao Lin

  arXiv preprint arXiv:2603.01493

• StepORLM: A Self-Evolving Framework With Generative Process Supervision For Operations Research Language Models

  Chenyu Zhou, Tianyi Xu, Jianghao Lin, Dongdong Ge

  arXiv preprint arXiv:2509.22558, 2025

• Externalization in LLM Agents: A Unified Review of Memory, Skills, Protocols and Harness Engineering

  Chenyu Zhou, Huacan Chai, Wenteng Chen, Zihan Guo, Rong Shan, Yuanyi Song, Tianyi Xu, Yingxuan Yang, Aofan Yu, Weiming Zhang, Congming Zheng, Jiachen Zhu, Zeyu Zheng, Zhuosheng Zhang, Xingyu Lou, Changwang Zhang, Zhihui Fu, Jun Wang, Weiwen Liu, Jianghao Lin, Weinan Zhang

  arXiv preprint arXiv:2604.08224

• OSCAR: Optimization-Steered Agentic Planning for Composed Image Retrieval

  Teng Wang, Rong Shan, Jianghao Lin, Junjie Wu, Tianyi Xu, Jianping Zhang, Wenteng Chen, Changwang Zhang, Zhaoxiang Wang, Weinan Zhang, Jun Wang

  arXiv preprint arXiv:2602.08603

• Bridging NIP and MLM: A Unified Meta-Learning Framework for Sequential Recommendation

  Youhua Li, Ersheng Ni, Yihao Liu, Sibo Xu, Tianyi Xu, Mingxuan Wu, Junchen Fu, Yucheng Zhang, Yuanqi He, Xinyuan Song, Yongxin Ni

  ACM Transactions on Knowledge Discovery from Data