🤗 I am Junkai Chen (陈俊凯), a Ph.D. student at Singapore Management University, advised by 👨‍🏫 Prof. David Lo. I received my master’s degree at Zhejiang University, where I was very fortunate 💗 to be advised by Prof. ✨ Xing Hu and Prof. 🌟 Xin Xia.

So many exciting and interesting \(≧▽≦)/ things are happening in the era of AI (especially Large Language Models)!, where code seems to be a promising path from uninterpretable output to grounded actions. I am thrilled to be part of this time, and hope to make meaningful contributions to real world problems, with research at the intersection of Software Engineering and Artificial Intelligence.

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News

• [26/9/25] 😆 Check our lastest preprint for evaluating 🔐 secure vide coding of code agents! We surprisingly find that, given the historical context of vulnerability introduction, current code agents still fall into human failures, even inducing other security issue!

• 🤗 Feel free to check and contribute recent SE conference papers at SEConfPaperList 〰️

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Publications

• [Preprint] SecureAgentBench: Benchmarking Secure Code Generation under Realistic Vulnerability Scenarios
  Junkai Chen*, Huihui Huang*, Yunbo Lyu, Junwen An, Jieke Shi, Chengran Yang, Ting Zhang, Haoye Tian, Yikun Li, Zhenhao Li, Xin Zhou, Xing Hu, and David Lo.
  More

  TLDR: First secure coding benchmark for vibe coding.
  📄 PDF | 💻 Code: TBD
• [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 | 💻 Code
• [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

• 2026: ICSE (Shadow PC), MSR (Junior PC), DL4C@NeurIPS, EASE (AI Models / Data Track)
• 2025: MSR (Junior PC), DL4C@ICLR, LTB@ICPE

Others

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