Hello you! I am Junkai Chen (陈 俊凯), working as a Research Engineer in the Software Analytics Research Group of Singapore Management University, advised by Prof. David Lo. I am also a master’s student at School of Software Technology, Zhejiang University. I feel very lucky to have Prof. Xing Hu as my supervisor, which makes this journey incredibly rewarding and meaningful to me. I am also grateful for the generous support and guidance from Dr. Xin Xia.

In the era of AI, every detail in software engineering is being revisited and reshaped by novel technologies like large language models. In response, my research aims to build more effective, efficient, and reliable AI systems for software engineering, ultimately moving towards fully automated software engineering and creating a world defined by ubiquitous software.

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News

• [Pinned] 🤗 Feel free to check recent SE conference papers at SEConfPaperList 〰️

• [30/3/25] 😆 Our paper about code review is accepted by ISSTA 2025.

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Publications

[Google Scholar]

• [TOSEM'25] NLPerturbator: Studying the Robustness of Code LLMs to Natural Language Variations
  Junkai Chen*, Zhenhao Li*, Xing Hu, and Xin Xia.
  More

  TLDR: Test robustness of llms by perturbations.
  PDF and Code: TBA
• [ISSTA'25] Understanding Practitioners’ Expectations on Clear Code Review Comments
  Junkai Chen*, Zhenhao Li*, Qiheng Mao, Xing Hu, Kui Liu, and Xin Xia.
  More

  TLDR: Investigate what constitutes clear code review comments.
  📄 PDF | 💻 Code
• [ICSE'25] Reasoning Runtime Behavior of a Program with LLM: How Far Are We?
  Junkai Chen*, Zhiyuan Pan*, Xing Hu, Zhenhao Li, Ge Li, and Xin Xia.
  More

  TLDR: Check if LLMs can reason intermediate runtime information of code.
  📄 PDF | 💻 Code
• [ICSE'24] Code Search is All You Need? Improving Code Suggestions with Code Search
  Junkai Chen, Xing Hu, Zhenhao Li, Cuiyun Gao, Xin Xia, and David Lo.
  🏆 ACM SIGSOFT Distinguished Paper Award.
  More

  TLDR: Combine different code search methods with code suggestions.
  📄 PDF | 💻 Code

* denotes equal contribution.

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Awards

• ACM SIGSOFT Distinguished Paper Award, ACM SIGSOFT, 2024
• National Scholarship, Ministry of Education of P.R.C., 2024
• ACM SIGSOFT CAPS Travel Grant, 2025

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Services

Program Committee / Journal Reviewer

• 2025: MSR (Junior PC), DL4C@ICLR, LTB@ICPE

Others

• External Reviewer: TOSEM, FSE, ASE, MSR, FCS, JSS (Chinese), etc.
• Student Volunteer: Internetware 2023

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Experiences

• Research Engineer, Singapore Management University, Jan. 2025 - present
  • Advisor: David Lo (ACM/IEEE Fellow)
• M.E. in Software Engineering, Zhejiang University, Sep. 2022 - Jun 2025
  • Supervisor: Xing Hu
  • Advisor: Xin Xia (ACM Distinguished Member)
• B.E. in Computer Science, Southwest Jiaotong University, Sep. 2018 - Jun. 2022