He Ye | Assistant Professor at UCL

This is Ye. Welcome to my page. I am a Lecturer (aka. Assistant Professor) in the Department of Computer Science at University College London. Previously, I worked as a Postdoctoral Researcher at Carnegie Mellon University (2023 to 2025) with Prof. Claire Le Goues. I obtained my PhD from KTH Royal Institute of Technology in February 2023, where I was fortunate to be supervised by Prof. Martin Monperrus and Prof. Benoit Baudry.

My research focuses on developing the next generation of code agents to automate software engineering tasks. I work on codebase context retrieval and long-term memory for code agents. Specifically, my research interests are:

• Improving codebase context retrieval precision through graph–based reasoning.
• Building intelligent code agents for issue resolution, environment setup, terminal tasks, and reproduction test generation.
• Model–agent and multi-agent orchestration.

News

• [2025-11] Prometheus achieved TOP 5 and TOP 1 🏆 in the code agents using gpt-5 in the SWE-bench Verified leaderboard 🎉! Check out our Project Repository.
• [2025-11] Prometheus resolved 33.77% of issues in the AWS PolyBench code-agent benchmark using GPT 5, which is higher than the current top agent on the leaderboard. Check out our Experiment Result.
• [2025-10] We maintain a curated list of code agent projects and research: Awesome Code Agents - explore the cutting-edge developments in autonomous code generation, bug fixing, and software engineering automation.

Team

PhD students

• Zhaoyang Chu (starting Fall 2025)
• Xiang Li (starting Fall 2025)

Research Assistants

• Yue Pan
• Han Li

Visiting PhDs

• Zhiwei Fei (2025-2026) from Nanjing University
• Lingxiao Tang (2025-2026) from Zhejiang University
• Zhenyu Yang (2025-2026) from Shandong University

Publications

For a complete list, please visit my Google Scholar.

Code Agents

• Prometheus: Unified Knowledge Graphs for Issue Resolution in Multilingual Codebases.
  Zimin Chen, Yue Pan, Siyu Lu, Jiayi Xu, Claire Le Goues, Martin Monperrus, He Ye.
  Arxiv 2025.
• Understanding Code Agent Behaviour: An Empirical Study of Success and Failure Trajectories.
  Oorja Majgaonkar, Zhiwei Fei, Xiang Li, Federica Sarro, He Ye.
  Arxiv 2025.
• AdverIntent-Agent: Adversarial Reasoning for Repair Based on Inferred Program Intent.
  He Ye, Aidan ZH Yang, Chang Hu, Yanlin Wang, Tao Zhang, Claire Le Goues.
  Proceedings of the ACM on Software Engineering 2 (ISSTA), 1398–1420, 2025.
• MemoryBank: Enhancing Large Language Models with Long-Term Memory.
  Wanjun Zhong, Lianghong Guo, Qiqi Gao, He Ye, Yanlin Wang.
  Proceedings of the 38th AAAI Conference on Artificial Intelligence, 38(17), 19724–19731.

Model Post-Training and Reasoning

• CodeReasoner: Enhancing the Code Reasoning Ability with Reinforcement Learning.
  Lingxiao Tang, He Ye, Zhongxin Liu, Xiaoxue Ren, Lingfeng Bao.
  Arxiv 2025.
• Security vulnerability detection with multitask self-instructed fine-tuning of large language models.
  Aidan ZH Yang, Haoye Tian, He Ye, Ruben Martins, Claire Le Goues.
  Arxiv 2024.

Learning-based Automated Program Repair

• Iter: Iterative neural repair for multi-location patches.
  He Ye, Martin Monperrus.
  Proceedings of the 46th IEEE/ACM International Conference on Software Engineering, 2024.
• Neural program repair with execution-based backpropagation.
  He Ye, Matias Martinez, Martin Monperrus.
  Proceedings of the 44th International Conference on Software Engineering, 2022.
• SelfAPR: Self-supervised program repair with test execution diagnostics.
  He Ye, Matias Martinez, Xiapu Luo, Tao Zhang, Martin Monperrus.
  Proceedings of the 37th IEEE/ACM International Conference on Automated Software Engineering, 2022.

Service

Organizer

• The 67th CREST Open Workshop (COW), UCL (2025)

  Workshop Chair

• Automated Program Repair @ ICSE (2025)
• Language Models and Program Languages @ SPLASH (2025)

  Program Committee Member

• ICSE Research Track (2025, 2026)
• ASE Research Track (2024, 2025)
• ESEC/FSE Research Track (2026)
• ISSTA Research Track (2026)
• MSR Research Track (2024)

  Organizing Committees

• Proceedings Co-chair, 15th International Conference on Internetware (2024)
• Publicity Co-chair, 31st Asia-Pacific Software Engineering Conference (2024)
• Doctoral Symposium Co-chair, 16th Asia-Pacific Symposium on Internetware (2025)
• Publicity Co-chair, 16th International Conference on Internetware (2025)

  Journal Reviewers

• IEEE TSE (2022–2025)
• ACM TOSEM (2023–2025)
• IEEE TDSC (2022–2024)
• Automated Software Engineering Journal (2024)
• Elsevier SCP (2023), Elsevier IST (2023)

  Workshop Reviewers

• LLM4Code @ ICSE (2025)
• AI-Augmented SDLC @ FSE (2025)
• AgenticSE @ ASE (2025)
• APSEC Demo Track (2025)

Contact

• Email: he[DOT]ye[AT]ucl[DOT]ac[DOT]uk