Publications

2026

1. IEEE Software

   How Natural Language Proficiency Shapes Generative AI Code for Software Engineering Tasks

   Ruksit Rojpaisarnkit, Youmei Fan, Kenichi Matsumoto, and 1 more author

   IEEE Software, 2026

   DOI

2025

1. Intelligent SE

   Exploring the SECURITY. md in the Dependency Chain: Preliminary Analysis of the PyPI Ecosystem

   Chayanid Termphaiboon, Raula Gaikovina Kula, Youmei Fan, and 4 more authors

   arXiv preprint arXiv:2511.22186, 2025
2. AIware

   Human to Document, AI to Code: Three Case Studies of Comparing GenAI for Notebook Competitions

   Tasha Settewong, Youmei Fan, Raula Gaikovina Kula, and 1 more author

   arXiv e-prints, 2025
3. IEICE

   Should Maintainers Deploy to Cross-Ecosystems? An Analysis of Packages from PyPI and NPM

   Lenz NERIT, Youmei Fan, Benson MIROU, and 2 more authors

   IEICE Transactions on Information and Systems, 2025

   DOI
4. 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

   This study examines developer reactions to protestware incidents in the JavaScript ecosystem, analyzing community responses to the color.js and es5.ext cases through mixed-methods empirical research.

   @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},
   }

5. MSR

   Do Developers Depend on Deprecated Library Versions? A Mining Study of Log4j

   Haruhiko Yoshioka, Sila Lertbanjongngam, Masayuki Inaba, and 5 more authors

   In 2025 IEEE/ACM 22nd International Conference on Mining Software Repositories (MSR), 2025

   DOI
6. MSR

   Mining for Lags in Updating Critical Security Threats: A Case Study of Log4j Library

   Hidetake Tanaka, Kazuma Yamasaki, Momoka Hirose, and 5 more authors

   In 2025 IEEE/ACM 22nd International Conference on Mining Software Repositories (MSR), 2025

   DOI

2024

1. 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

   This paper investigates how Twitter/X mentions impact GitHub Sponsors funding through empirical analysis of social media promotion strategies.

   @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},
   }

2. 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

   An empirical study examining how international sanctions affect GitHub developer communities and their collaborative activities.

   @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},
   }

3. ISSREW

   Linking Code and Documentation Churn: Preliminary Analysis

   Ani Hovhannisyan, Youmei Fan, Gema Rodríguez-Pérez, and 1 more author

   In 2024 IEEE 35th International Symposium on Software Reliability Engineering Workshops (ISSREW), 2024

   DOI
4. ISSREW

   How Maintainable is Proficient Code? A Case Study of Three PyPI Libraries

   Indira Febriyanti, Youmei Fan, Kazumasa Shimari, and 2 more authors

   In 2024 IEEE 35th International Symposium on Software Reliability Engineering Workshops (ISSREW), 2024

   DOI