🤔 About Me

I am currently a second year master student in UC San Diego.

My current research interest includes AI Agent and Machine Learning Systems.

📖 Educations

• 2024.09 - 2026.03 (expected), M.S. in Computer Science, UC San Diego (La Jolla, California, USA)
• 2020.09 - 2024.06, B.Eng. in Software Eng., Nanjing University (Nanjing, China)

💻 Experiences

• 2025.10 - Present, Research Intern (MLSys) @ UCSD WukLab, La Jolla, USA
• 2025.06 - 2025.09, Software Engineer Intern (Agentic AI) @ Amazon Web Services, Seattle, USA.
• 2023.06 - 2023.09, Software Engineer Intern (Search Infra) @ Meituan, China.
• 2022.09 - 2023.05, Research Intern (Automated Software Engineering) @ Nanjing University, China.
• 2022.07 - 2022.08, Software Engineer Intern (Web Dev.) @ Howmet Aerospace (Suzhou), China.

📝 Publications

Information Retrieval

• SOLAR: Serendipity Optimized Language Model Aligned for Recommendation

  Zichen Yuan^*; Lifan Sun^* et al.

  EMNLP 2025 Findings

• AMBER: Adaptive Meta Balanced Paradigm for Heterogeneous Graph-Based Knowledge Tracing

  Lifan Sun^*; Zichen Yuan^* et al.

  CIKM 2025

Software Engineering

• Towards Effective Bug Reproduction for Mobile Applications

  Xin Li^*; Shengcheng Yu^*; Lifan Sun; Yuexiao Liu; Chunrong Fang.

  DSA 2023 🏅 Best Paper Award

🎖 Honors and Awards

• 2022-2023 People’s Scholarship @ Nanjing University

• 2021-2022 People’s Scholarship @ Nanjing University

• 2020-2021 People’s Scholarship @ Nanjing University