🤖 Brief Introduction

Hello, I am Kosmo CHE (Xinyu CHE, 车心宇).

I am a first-year Master’s student in Computer Science at Xi’an Jiaotong University, advised by Prof. Jun LIU. Recently my research interests focus on LLM Reasoning in the context of Reinforcement Learning and Test Time Scaling.

I achieved my Bachelor’s degree in Intelligent Science and Technology from Shanghai University. During that time, I conducted in-depth research on Document Understanding and Inference Acceleration.

If you have any inquiries or are interested in collaboration, please feel free to contact me via email at kosmoche@gmail.com.

🧑‍🎓 Education History

  • 2025.09 - 2028.06: Master of Computer Technology, Xi’an Jiaotong University, Xi’an, Shaanxi, China.
  • 2021.09 - 2025.06: Bachelor of Intelligent Science and Technology, Shanghai University, Shanghai, China.

💻 Professional Experience

  • 2025.04 - 2025.08: Research Intern, IEG, Tencent.
  • 2024.09 - 2025.03: Research Intern, Corporate Research, Bosch.
  • 2023.03 - 2025.04: Team Member, Shanghai University Super Computing Team.

🎉 Honors and Awards

  • [2024.12] Xiaomi Scholarship for outstanding academic performance and competition achievements, Shanghai University and Xiaomi Foundation.
  • [2024.04] First Prize and Group Competition Award in 2024 ASC Student Supercomputer Challenge Global Final.

📰 Publications

$*$ indicates equal contribution, $^\dagger$ indicates corresponding author.

2026 ————

  1. [Preprint | Code] “TIDE: Trajectory-based Diagnostic Evaluation of Test-Time Improvement in LLM Agents”

    Hang Yan$^*$, Xinyu Che$^*$, Fangzhi Xu$^{*\dagger}$, Qiushi Sun, Zichen Ding, Kanzhi Cheng, Jian Zhang, Tao Qin, Jun Liu, Qika Lin$^\dagger$.

  2. [Preprint | Code] “OdysseyArena: Benchmarking Large Language Models For Long-Horizon, Active and Inductive Interactions”

    Fangzhi Xu$^*$, Hang Yan$^*$, Qiushi Sun$^*$, Jinyang Wu, Zixian Huang, Muye Huang, Jingyang Gong, Zichen Ding, Kanzhi Cheng, Yian Wang, Xinyu Che, Zeyi Sun, Jian Zhang, Zhangyue Yin, Haoran Luo, Xuanjing Huang, Ben Kao, Jun Liu, Qika Lin$^\dagger$.

🤪 Hobbies

  • 🎮 A rookie Monster Hunter player
  • 🚴 Road bike noob legs
  • 🏋️‍♂️ Protein shaker pro