CV

Education

Shanghai University of Finance and Economics (SUFE), Shanghai, China
- Undergraduate of Engineering in Data Science and Big Data Technology
- Pilot Class of Research Institute for Interdisciplinary Science
- GPA: 3.81/4.0
- Rank: 4/127
- Sept 2022 - Present

Jan 2025 - Present: Research Assistant (Tuning-free First Order Methods)
- Shanghai Jiao Tong University
- Supervisor: Prof. Qi Deng
- Propose an accelerated distance-adaptive method which achieves optimal anytime convergence rates for Hölder smooth problems without requiring prior knowledge of smoothness parameters or explicit parameter tuning.
- Extend to convex problems with linear constraint and stochastic gradient.
Sept 2025 - Present: Research Assistant (Schedule Free Method and Preconditioner)
- Shanghai Jiao Tong University, Stanford University
- Supervisor: Prof. Qi Deng, Prof. Yinyu Ye
- Show operator norm has some advantage beyond other norm in matrix optimizer.
- Apply online scaling method to achieve better performance than the schedule-free approach.
Sept 2024 - Feb 2025: Research Assistant (Online Robust Mechanism on Cooperative Games)
- Shanghai University of Finance and Economics (SUFE)
- Supervisor: Prof. Hu Fu and Prof. Zhihao Gavin Tang
- Constructed a counterexample showing that no mechanism can achieve the approximation rate beyond O(1/k).
- Proved that with partial information about the value function, linear programming can be used to design a complete mechanism.
Mar 2025 - May 2025: Research Assistant (Experiments on Hidden City Ticketing Revenue Management)
- Georgia Tech, University of Western Ontario London
- Supervisor: Prof. Zikai Xiong and Prof. Nanxi Zhang
Sept 2024 - Jan 2025: LLMs Technical Intern
- Cardinal, Shanghai, China

Accelerated Distance-adaptive Methods for Hölder Smooth and Convex Optimization
- Yijin Ren, Haifeng Xu, Qi Deng
- NeurIPS 2025, arXiv:2510.22135

Feb 2025 - June 2025: Teaching Assistant
- Course: Algorithm Design and Analysis
- Institution: SUFE
- Supervisor: Prof. Hu Fu
Feb 2024 - June 2024: Teaching Assistant
- Course: Mathematical Analysis II
- Institution: SUFE
- Supervisor: Prof. Tsz Chiu Kwok