Projects & tools.

Research projects

Funded research efforts and notable studies, most recent first.

• M-MMT4NL — Multilingual Testing Framework for Large-Language Models

  Explore metamorphic testing as a rigorous way to ensure the robustness of large language models across languages.

  Team: C. Ragkhitwetsagul, T. Racharak, T. Sunetnanta, J. Saejang, T. Intharah

  2025 – Mahidol Strategic · Rising

• MAINTAIN — Intelligent Maintenance of Software Systems

  Apply state-of-the-art ML and SE to develop a novel approach for software maintenance. Led by Matheus Paixao (UECE, Brazil).

  Team: M. Paixao, P. H. Maia, I. De Sousa Santos, J. T. De Souza, A. A. de Paula Araújo, A. Uchôa, T. Ferreira, C. Ragkhitwetsagul

  2023 – CNPq/MCTI · Brazil

• Code Similarity Applications for Improving Software Quality

  Build a code-similarity-driven approach and an automated tool that detects similar code and recommends improvements.

  Team: C. Ragkhitwetsagul · Mentor: Prof. Peter Haddawy

  2021 – 2023 RGNS · MHESRI

• ASETSI — Automated SE for Thailand's Software Industry

  Thai–UK collaboration transferring state-of-the-art ASE tools and techniques from UK experts to Thai software companies. Project site ↗

  Team: C. Ragkhitwetsagul, J. Krinke, M. Choetkiertikul, T. Sunetnanta, F. Sarro · Industry: ProGaming, Trinity Roots, Zwiz.AI, CourseSquare

  2019 – 2021 Royal Academy of Eng. · TSRI

• Toxic Code Snippets on Stack Overflow

  Clone detection across 72k Java snippets and 111 OSS projects — found 66% of matches outdated and potentially harmful to reuse. Project site ↗

  Team: C. Ragkhitwetsagul, J. Krinke, M. Paixao, G. Bianco, R. Oliveto

  2019 TSE · ESEC/FSE Journal-First

• Image-based Code Clone Detection

  Detect clones via image similarity — capture the visual perception of syntax-highlighted code as humans see it. Project site ↗

  Team: C. Ragkhitwetsagul, J. Krinke, B. Marnette

  2018 IWSC · People's Choice Award

• A Comparison of Code Similarity Analysers

  Evaluate 30 similarity tools across 5 scenarios on Java source — strong evidence for compile/decompile as a normalization step. Project site ↗

  Team: C. Ragkhitwetsagul, J. Krinke, D. Clark

  2017 EMSE Journal

• Compilation/Decompilation for Clone Detection

  Combine clones found before and after decompilation — higher recall, no loss in precision. Project site ↗

  Team: C. Ragkhitwetsagul, J. Krinke

  2017 IWSC · People's Choice Award

• Similarity of Source Code under Pervasive Modifications

  The largest comparison to date of 30 similarity tools against pervasive code modifications. Project site ↗

  Team: C. Ragkhitwetsagul, J. Krinke, D. Clark

  2016 SCAM

• Searching for Configurations in Clone Evaluation

  Replication study of EvaClone — a GA-based parameter optimizer that beats default tool settings by 19.9–66.4%. Project site ↗

  Team: C. Ragkhitwetsagul, M. Paixao, M. Adham, S. Busari, J. Krinke, J. H. Drake

  2016 SSBSE · Challenge Track

• Measuring Code Similarity in Large-scale Corpora

  Scalable code-search framework built on IR, tokenization, code normalization, and variable-length grams.

  Team: C. Ragkhitwetsagul

  2016 ICSME · Doctoral Symposium

Software tools

Tool demonstration papers — open-source tools and prototypes built with my students and collaborators. Pulled live from the publications list.

My master's degree projects

Coursework and capstone projects from Carnegie Mellon University (2007–2008).

• Honeydew — Meeting-date prediction from email

  ML-based intelligent agent that extracts meeting information from emails and drafts calendar entries. Report ↗

  Team: C. Ragkhitwetsagul

  2008 CMU · ML

• FoxBeacon — Firefox web-bug detector

  Firefox extension that scans incoming pages for hidden web bugs and implements the P3P Compact Policy component. Report ↗

  Team: C. Ragkhitwetsagul

  2008 CMU · Privacy

• GA-based Similarity Functions for Record Linkage

  Use genetic algorithms to search for the optimal combination of similarity functions, framing record linkage as classification. Report ↗

  Team: F. Shaikh, C. Ragkhitwetsagul

  2008 CMU · GA

• Hercules File System

  Distributed file system with scalable MDS and fault-tolerant DS clusters; servers can be added at runtime without disruption. Report ↗

  Team: F. Shaikh, C. Ragkhitwetsagul, A. R. Pathan

  2007 CMU · Distributed systems