Youmei Fan

Email: fan.youmei.fs2[at]is.naist.jp

Hello, I’m Youmei Fan (范优美), an Assistant Professor of Software Engineering Laboratory at the Nara Institute of Science and Technology.

My research lies in Empirical Software Engineering, with a primary focus on OSS ecosystems. I study how developers collaborate, how their contributions evolve and sustain over time, and how financial and social dynamics influence participation in these communities. By combining large-scale data analysis with socio-technical perspectives, I aim to deepen our understanding of developer behavior and the sustainability of software as essential research infrastructure.

I am also interested in AI4SE, particularly in exploring how developers interact with large language models and how these tools reshape collaboration and practices in software development.

news

Sep 25, 2025	🎉 Excited to share that our paper “Exploring the SECURITY.md in the Dependency Chain: Preliminary Analysis of the PyPI Ecosystem” has been accepted at ISE 2025!
Sep 23, 2025	🎉 Excited to share that our paper “Human to Document, AI to Code: Three Case Studies of Comparing GenAI for Notebook Competitions” has been accepted at AIware 2025!
Jul 07, 2025	🚀 New Preprint Alert - GenAI Adoption in OSS
Apr 01, 2025	Thrilled to begin my journey as an Assistant Professor at the Software Engineering Lab, NAIST 🚀📚

selected publications

EMSE

Developer reactions to protestware in open source software: the cases of color. js and es5. ext

Youmei Fan, Dong Wang, Supatsara Wattanakriengkrai, and 4 more authors

Empirical Software Engineering, 2025

Abs DOI Bib HTML

@article{fan2025developer,
  title = {Developer reactions to protestware in open source software: the cases of color. js and es5. ext},
  author = {Fan, Youmei and Wang, Dong and Wattanakriengkrai, Supatsara and Damrongsiri, Hathaichanok and Treude, Christoph and Hata, Hideaki and Kula, Raula Gaikovina},
  journal = {Empirical Software Engineering},
  volume = {30},
  number = {2},
  pages = {56},
  year = {2025},
  publisher = {Springer},
  doi = {10.1007/s10664-024-10599-6},
  url = {https://doi.org/10.1007/s10664-024-10599-6},
  dimensions = {true},
}

ICSE

"My GitHub Sponsors profile is live!" Investigating the Impact of Twitter/X Mentions on GitHub Sponsors

Youmei Fan, Tao Xiao, Hideaki Hata, and 2 more authors

In Proceedings of the IEEE/ACM 46th International Conference on Software Engineering, 2024

Abs DOI Bib HTML

@inproceedings{fan2024my,
  title = {"My GitHub Sponsors profile is live!" Investigating the Impact of Twitter/X Mentions on GitHub Sponsors},
  author = {Fan, Youmei and Xiao, Tao and Hata, Hideaki and Treude, Christoph and Matsumoto, Kenichi},
  booktitle = {Proceedings of the IEEE/ACM 46th International Conference on Software Engineering},
  pages = {1--12},
  year = {2024},
  doi = {10.1145/3597503.3639127},
  url = {https://doi.org/10.1145/3597503.3639127},
  dimensions = {true},
}

IEEE Software

The Impact of Sanctions on GitHub Developers and Activities

Youmei Fan, Ani Hovhannisyan, Hideaki Hata, and 2 more authors

IEEE Software, 2024

Abs DOI Bib HTML

@article{10767746,
  author = {Fan, Youmei and Hovhannisyan, Ani and Hata, Hideaki and Treude, Christoph and Kula, Raula Gaikovina},
  journal = {IEEE Software},
  title = {The Impact of Sanctions on GitHub Developers and Activities},
  year = {2024},
  volume = {},
  number = {},
  pages = {1-5},
  keywords = {Software development management;Navigation;Government;Collaboration;Social networking (online);Regulation;Pandemics;Market research;Licenses;Color},
  doi = {10.1109/MS.2024.3505204},
  url = {https://doi.org/10.1109/MS.2024.3505204},
  dimensions = {true},
}