My Research Interests
Currently, my research interests lie in X areas as follows.
Coding Proficiency: I am interested in applying natural language proficiency framework like CEFR to programming languages. With my research collaborators, we have developed proficiency frameworks for Python and JavaScript and created tools for automated coding proficiency analysis (pycefr and jscefr). We are now interested in applying theses tools to perform empirical studies on coding proficiency in various contexts, such as code reviews, issue resolutions, and software maintenance.
Code Similarity: I am interested in applications of code similarity in software engineering activities. Some of the research topics in this area that I am working on include code improvement recommendations based on Stack Overflow answer edits, and finding the optimal configurations for code clone search. Moreover, one of my main focuses is the scalability of code similarity/clone detection. Scalable code clone detection is increasingly important nowadays due to the popularity of code reuse from online sources such as Stack Overflow or GitHub. Previous studies have shown that cloning code snippets from Stack Overflow not only potentially introduces vulnerabilities to the software but also causes licensing conflicts. I have built a scalable code search tool (Siamese) that instantly retrieves clone snippets from online sources. It incorporates novel techniques of multiple code representations and query reduction to accurately retrieve clones within hundred millions line of code within seconds. The tool facilitates developers and SE researchers in many ways, such as finding clones during commit or code review time, finding similar code examples, or software plagiarism detection.
Software Engineering for Data Science: I, and my team at the Faculty of ICT, Mahidol University, are interested in studying the applications of software engineering practices and tools in data science projects. We are performing an empirical study on the current states of adoption of SE practices and tools in data science industry in Thailand. This will lead to recommendations on how to improve the software quality of data science projects and the skills of the data science practitioners by using the knowledge from software engineering.
Software Engineering Challenges in Thailand: I, and my team at the Faculty of ICT, Mahidol University and UK partners in UCL, are interested in supporting Thai software industry to produce better software with better software development practices. We have conducted several studies to understand the software engineering challenges in Thailand, such as the adoption of automated software engineering tools and techniques (Ragkhitwetsagul, 2022, Ragkhitwetsagul, 2024) and are working closely with our industry partners to address these challenges.
Publications
My publications sorted chronologically in descending order are as shown below.
You can also find them at: Google Scholar | Scopus.
2024
Ragkhitwetsagul C., Kongwongsupak K., Maneesawas T., Puttiwarodom N., Rojpaisarnkit R., Choetkiertikul M., Kula R. G., Sunetnanta T., jscefr: A Framework to Evaluate the Code Proficiency for JavaScript, Proceedings of the 40th International Conference on Software Maintenance and Evolution (ICSME '24) Tool Demo Track, 6-11 October 2024, Flagstaff, AZ, USA.
Download: Preprint
Sousa D., Paixao M., Ragkhitwetsagul C., and Uchoa I., Code Clone Configuration as a Multi-Objective Search Problem, Proceedings of the 18th ACM/IEEE International Symposium on Empirical Software Engineering and Measurement (ESEM '24) Emerging Results, Vision and Reflection Papers Track, 20-25 October 2024, Barcelona, Spain.
Download: DOI
Rojpaisarnkit R., Robles G., Kula R. G., Wang D., Ragkhitwetsagul C., Gonzalez-Barahona J. M., Matsumoto K., Towards Identifying Code Proficiency through the Analysis of Python Textbooks, Proceedings of the 40th International Conference on Software Maintenance and Evolution (ICSME '24), 6-11 October 2024, Flagstaff, AZ, USA.
Download: Preprint
Ragkhitwetsagul C., Prasertpol V., Ritta N., Sae-Wong P., Noraset T. and Choetkiertikul M., Typhon: Automatic Recommendation of Relevant Code Cells in Jupyter Notebooks, Proceedings of the 21st International Joint Conference on Computer Science and Software Engineering (JCSSE '24), 19-22 June 2024, Phuket, Thailand.
Download: Preprint, | Presentation
Ragkhitwetsagul C., Jarukitpipat V., Kula R. G., Choetkiertikul M., Chhun K., Wanprasert W., Sunetnanta T., See to Believe: Using Visualization To Motivate Updating Third-party Dependencies, Proceedings of the 21st International Joint Conference on Computer Science and Software Engineering (JCSSE '24), 19-22 June 2024, Phuket, Thailand.
Download: Preprint, | Presentation
Ragkhitwetsagul C., Krinke J., Choetkiertikul M., Sunetnanta T., Sarro F., Adoption of Automated Software Engineering Tools and Techniques in Thailand, Empirical Software Engineering, 2024
Download: DOI (Open Access)
Sanamontre T., Visoottiviseth V., and Ragkhitwetsagul C., Detecting Malicious Android Game Applications on Third-Party Stores Using Machine Learning, Proceedings of the 38th International Conference on
Advanced Information Networking and Applications (AINA 2024), Volume IV, LNDECT 202, 17-19 April 2024, Kitakyushu, Japan.
Download: Preprint | DOI
Lapvikai P., Ragkhitwetsagul C., Choetkiertikul M., Higo Y., Autorepairability: A New Software Quality Characteristic, 31st IEEE International Conference on Software Analysis, Evolution, and Reengineering (SANER 2024), Rovaniemi, Finland.
Download: Preprint
2023
Choetkiertikul M., Puengmongkolchaikit A., Chandra P., Ragkitwetsakul C., Maipradit R., Hata H., Sunetnanta T., Matsumoto K., Studying the association between Gitcoin's issues and resolving outcomes, Journal of Systems and Software, 2023.
Download: DOI
Choetkiertikul M., Hoonlor A., Ragkhitwetsagul C., Pongpaichet S., Sunetnanta T., Settewong T., Jiravatvanich V., Kaewpichai U., Mining the Characteristics of Jupyter Notebooks in Data Science Projects in the Mining Software Repositories 2023 (MSR '23) - Registered Report, 15-16 May 2023, Melbourne, Australia.
Download: Preprint
Rattanukul, P., Chansida Makaranond, C., Pumipat Watanakulcharus, P., Ragkhitwetsagul, C.,Nearunchorn†, T., Visoottiviseth, V., Choetkiertikul, M., Sunetnanta, T., Microusity: A testing tool for Backends for Frontends (BFF) Microservice Systems in the 31st IEEE/ACM International Conference on Program Comprehension (ICPC '23), 15-16 May 2023, Melbourne, Australia.
Download: Preprint | DOI
Sangaroonsilp, P., Dam, H. K., Choetkiertikul, M., Ragkhitwetsagul, C., & Ghose, A. (2023). A taxonomy for mining and classifying privacy requirements in issue reports. Information and Software Technology, 157 (January),
Download: DOI (Open Access)
2022
Ritta, N., & Settewong, T., Kula, R. G., Ragkhitwetsagul, C., Sunetnanta, T., & Matsumoto, K., Reusing My Own Code : Preliminary Results for Competitive Coding in Jupyter Notebooks in the 29th Asia-Pacific Software Engineering Conference (APSEC 2022), 6-9 December 2022, Virtual Event.
Download: Preprint | DOI
Settewong, T., Ritta, N., Kula, R. G., Ragkhitwetsagul, C., Sunetnanta, T., & Matsumoto, K., Why Visualize Data When Coding ? Preliminary Categories for Coding in Jupyter Notebooks in the 29th Asia-Pacific Software Engineering Conference (APSEC 2022), 6-9 December 2022, Virtual Event.
Download: Preprint | DOI
Ragkhitwetsagul, C., Choetkiertikul, M., Hoonlor, A., & Prachyabrued, M.,Virtual Reality for Software Engineering Presentations in the 29th Asia-Pacific Software Engineering Conference (APSEC 2022), 6-9 December 2022, Virtual Event -- Won the best paper award!
Download: Preprint | DOI | Best Paper Award
Krinke J. and Ragkhitwetsagul C.,BigCloneBench Considered Harmful for Machine Learning. in the 16th International Workshop on Software Clones (IWSC '22), 2 October 2022, Limassol, Cyprus - Won the Best Paper Award and Best Presentation Award!.
Download: Preprint, | DOI | Best Paper & People's Choice Award
Jarukitpipat, V., Chhun, K., Wanprasert, W., Choetkiertikul, M., Sunetnanta, T., Kula, R. G., Chinthanet, B., Ishio, T., & Matsumoto, K., V-Achilles : An Interactive Visualization of Transitive Security Vulnerabilities. The 37th IEEE/ACM International Conference on Automated Software Engineering (ASE '22) - Tool Demonstration Track, 10-14 October 2022, Michigan, USA.
Download: Preprint | DOI
Kangwanwisit, P., Choetkiertikul, M., Ragkhitwetsagul, C., Sunetnanta, T., Maipradit, R., Hata, H., Matsumoto, K.A component recommendation model for issues in software projects. The 19th International Joint Conference on Computer Science and Software Engineering (JCSSE '22), 22 - 25 June 2022, Bangkok, Thailand.
Download: DOI
Ragkhitwetsagul C. and Paixao M.,Recommending Code Improvements Based on Stack Overflow Answer Edits. in the 19th International Conference on Mining Software Repositories (MSR '22') - Registered Report Track, 18-19 May 2022, Pittsburgh, PA, USA.
Download: Preprint |
Video:
Robles G., Kula R. G., Ragkhitwetsagul C., Sakulniwat T., Matsumoto K., Gonzalez-Barahona J. M., pycefr: Python Competency Level through Code Analysis. in the 30th IEEE/ACM International Conference on Program Comprehension (ICPC '22) - Tool Demonstration Track, 16-17 May 2022, Pittsburgh, PA, USA.
Download: Preprint | DOI | Video | DOI
Ragkhitwetsagul C., Krinke J., Choetkiertikul M., Sunetnanta T., Sarro F., Identifying Software Engineering Challenges in Software SMEs: A Case Study in Thailand. in the 29th International Conference on Software Analysis, Evolution, and Reengineering (SANER’22) - Industry Track, 15-18 March 2022, Honolulu, Hawaii.
Download: Preprint | Slides |
Video | DOI
2021
Phaithoon S., Wongnil S., Pussawong P., Choetkiertikul M., Rakhitwetsagul C., Sunetnanta T., Maipradit R., Hata H., Matsumoto K., FixMe: A GitHub Bot for Detecting and Monitoring On-hold Self-Admitted Technical Debt. in the Proceedings of the International Conference on Automated Software Engineering (ASE) - Tool Demonstrations Track, 2021 (Virtual Event).
Download: Preprint | DOI
Krinke, J., & Ragkhitwetsagul, C. (2021). Code Similarity in Clone Detection (Book Chapter).
In K. Inoue & C. K. Roy (Eds.), Code Clone Analysis (pp. 135–160), Springer.
Download: The Chapter
| The Book
Robert White, Jens Krinke, Earl Barr, Federica Sarro, Chaiyong Ragkhitwetsagul,
Artefact Relation Graphs for Unit Test Reuse Recommendation.
in the Proceedings of IEEE International Conference on Software Testing (ICST) 2021, Virtual Event.
Download: DOI
Choetkiertikul, M., Dam, H.K., Tran, T. et al.
Automatically recommending components for issue reports using deep learning.
Empirical Software Engineering 26, 14 (2021).
Download: DOI
2020
D. Han, C. Ragkhitwetsagul, J. Krinke, M. Paixao, G. Rosa,
Does code review really remove coding convention violations?.
in the Proceedings of 20th IEEE International Working Conference on Source Code Analysis and Manipulation (SCAM), 28 Sept.-2 Oct. 2020, Adelaide, Australia (Virtual Event).
Download: Preprint | DOI
C. Ragkhitwetsagul, J. Krinke. Siamese: Scalable and Incremental Code Clone Search via Multiple Code Representations.
Empirical Software Engineering (EMSE), 2019 / ICSE 2020 (Journal-First).
Download: Preprint |
DOI 10.1007/s10664-019-09697-7 |
Website: github.com/UCL-CREST/Siamese
|
Video:
C. Khanan, W. Luewichana, K. Pruktharathikoon, J. Jiarpakdee, C. Tantithamthavorn, M. Choetkiertikul, C. Ragkhitwetsagul, T. Sunetnanta.
JITBot: An Explainable Just-In-Time Defect Prediction Bot,
in the 35th IEEE/ACM International Conference on Automated Software Engineering (ASE ’20) - Tool Demo Track, September 21–25, 2020, Virtual Event, Australia
Website: https://jitbot-tool.github.io/
P. Phan-udom, N. Wattanakul, T. Sakulniwat, C. Ragkhitwetsagul, T. Sunetnanta, M. Choetkiertikul, R.G. Kula
Teddy: Automatic Recommendation of PythonicIdiom Usage For Pull-Based Software Project,
in The 36th IEEE International Conference on Software Maintenance and Evolution (ICSME 2020) - Tool Demo Track (Won the Best Tool Demo Award!),
September 21 - October 3, 2020, Adelaide, Australia.
Download: Preprint | Award Certificate
2019
N. Assavakamhaenghan, M. Choetkiertikul, S. Tuarob, R. G. Kula, H. Hata,
C. Ragkhitwetsagul, T. Sunetnanta, and K. Matsumoto.
Software Team Member Configurations: A Study of Team Effectiveness in Moodle,
in The 10th International Workshop on Empirical Software Engineering in Practice (IWESEP 2019), Tokyo, Japan
Download: Preprint | DOI
T. Sakulniwat, R. G. Kula, C. Ragkhitwetsagul, M. Choetkiertikul, T. Sunetnanta,
D. Wang, T. Ishio and K. Matsumoto.
Visualizing the Usage of Pythonic Idioms Over Time: A Case Study of the with open Idiom,
in The 10th International Workshop on Empirical Software Engineering in Practice (IWESEP 2019), Tokyo, Japan
Download: Preprint | DOI
V. Arammongkolvichai, R. Koschke, C. Ragkhitwetsagul, M. Choetkiertikul, T. Sunetnanta.
Improving Clone Detection Precision using Machine Learning Techniques,
in The 10th International Workshop on Empirical Software Engineering in Practice (IWESEP 2019), Tokyo, Japan
Download: Preprint | DOI
T. Bunkerd, D. Wang, R. G. Kula, C. Ragkhitwetsagul, M. Choetkiertikul,
T. Sunetnanta, T. Ishio, and K. Matsumoto.
How Do Contributors Impact Code Naturalness? An Exploratory Study of 50 Python Projects,
in The 10th International Workshop on Empirical Software Engineering in Practice (IWESEP 2019), Tokyo, Japan
Download: Preprint | DOI
S. Wattanakriengkrai, N. Srisermphoak, S. Sintoplertchaikul,
M. Choetkiertikul, C. Ragkhitwetsagul, T. Sunetnanta,
H. Hata and K. Matsumoto.
Automatic Classifying Self-Admitted Technical Debt Using N-gram IDF,
in the 26th Asia-Pacific Software Engineering Conference (APSEC 19), Putrajaya, Malaysia.
Download: Preprint | DOI
M. Paixao, J. Krinke, D. Han, C. Ragkhitwetsagul, M. Harman.
The Impact of Code Review on Architectural Changes.
Transactions on Software Engineering (TSE), 2019.
Download: DOI
2018
C. Ragkhitwetsagul. Code similarity and clone search in large-scale source code data. PhD thesis, 2018.
Download: PhD thesis
C. Ragkhitwetsagul, J. Krinke, M. Paixao, R. Oliveto, G. Bianco (2018). Toxic Code Snippets on Stack Overflow. Transactions on Software Engineering (TSE), 2018.
Download::
Preprint
DOI: 10.1109/TSE.2019.2900307
Website: ucl-crest.github.io/cloverflow-web
Reviewed in neverworkintheory.org
Additional material:
C. Ragkhitwetsagul, J. Krinke, R. Oliveto (2017). Awareness and Experience of Developers to Outdated and License-Violating Code on Stack Overflow: An Online Survey. UCL Computer Science Research Note (RN/17/10), 2017.
Download: Research Note arXiv: 1806.08149
J. Wilkie , Z. Al Halabi , A. Karaoglu , J. Liao , G. Ndungu, C. Ragkhitwetsagul, M. Paixão , J. Krinke (2018). Who's this? Developer identification using IDE event data. In 15th International Conference on Mining Software Repositories -- Mining Challenge (MSR 2018), 2018. Gothenburg, Sweden, 2018.
Download: Preprint
DOI: 10.1145/3196398.3196461
C. Ragkhitwetsagul, J. Krinke, B. Marnette (2017). A picture is worth a thousand words: code clone detection based on image similarity. In 12th International Workshop on Software Clones, 2018. Campobasso, Italy, 2018.
Download: Preprint DOI: 10.1109/IWSC.2018.8327318
C. Ragkhitwetsagul, J. Krinke, D. Clark (2017), A comparison of code similarity analysers, Empirical Software Engineering, vol. 23, no. 4, pp. 2464–2519, Aug. 2018.
Download: Preprint DOI: 10.1007/s10664-017-9564-7
Slideshow: Slideshare
2017
M. Paixao, J. Krinke, D. Han, C. Ragkhitwetsagul and M. Harman (2017). Are Developers Aware of the Architectural Impact of Their Changes? In the 32nd IEEE/ACM International Conference on Automated Software Engineering (ASE 2017), Illinois, USA
Download: Preprint DOI: 10.1109/ASE.2017.8115622
C. Ragkhitwetsagul, J. Krinke (2017). Using Compilation/Decompilation to Enhance Clone Detection. In 11th International Workshop on Software Clones, 2017. Klagenfurt, Austria -- Won the People's Choice Award!
Download: Preprint DOI: 10.1109/IWSC.2017.7880502 Slideshow: SlideShare
2016
C. Ragkhitwetsagul, J. Krinke, D. Clark (2016). Similarity of Source Code in the Presence of Pervasive Modifications. In 16th IEEE International Working Conference on Source Code Analysis and Manipulation (SCAM), 2016. North Carolina, USA.
Download: Preprint DOI: 10.1109/SCAM.2016.13 Slideshow: SlideShare
C. Ragkhitwetsagul (2016). Measuring Code Similarity in Large-scaled Code Corpora. In 32nd International Conference on Software Maintenance and Evolution (ICSME): Doctoral Symposium, 2016. North Carolina, USA.
Download: Preprint DOI: 10.1109/ICSME.2016.18
C. Ragkhitwetsagul, M. Paixao, M. Adham, S. Busari, J. Krinke, and J.H. Drake (2016). Searching for Configurations in Clone Evalution: A Replication Study. In 8th International Symposium on Search-based Software Engineering (SSBSE): Challenge Track, 2016. North Carolina, USA.
Download: Preprint DOI: 10.1007/978-3-319-47106-8_20 Slideshow: SlideShare
The publications listed from here are undergraduate student projects that I advised at the faculty of ICT, Mahidol University before my PhD:
P. Janviriya, T. Ongarjithichai, P. Numruktrakul, C. Ragkhitwetsagul (2014). CloudyDays : Cloud Storage Integration System. In Student Project Conference (ICT-ISPC), 2014 Third ICT International (pp. 125–128). Nakhonpathom, Thailand.
Download: DOI: 10.1109/ICT-ISPC.2014.6923233
P. Hathaiwichian, L. Siriwittayacharoen, A. Wongwachirawanich, C. Ragkhitwetsagul (2014). Android Application for Event Management and Information Propagation. In Student Project Conference (ICT-ISPC), 2014 Third ICT International (pp. 139–142). Nakhonpathom, Thailand.
Download: DOI: 10.1109/ICT-ISPC.2014.6923236
Academic Services
2021
Empirical Software Engineering (EMSE) Reviewer
ICSME 2021 Research Track Program Committee (https://icsme2021.github.io)
ICPC 2021 ERA Track Co-chair (https://conf.researchr.org/track/icpc-2021/icpc-2021-era)
ASE 2021 Research Track Program Committee (https://conf.researchr.org/track/ase-2021/ase-2021-papers)
ASE 2021 Late Breaking Results Track Program Committee (https://conf.researchr.org/track/ase-2021/ase-2021-late-breaking-results)
SANER 2021 ERA Track Program Committee (https://saner2021.shidler.hawaii.edu/index)
2020
Journal of Systems & Software (JSS) Reviewer
Science of Computer Programming (SCICO) Reviewer
Computer Science Review (COSREV) Reviewer
ASE 2020 Late Breaking Results Track Program Committee (https://conf.researchr.org/track/ase-2020/ase-2020-late-breaking-results)
ASE 2020 Research Track Program Committee (https://conf.researchr.org/track/ase-2020/ase-2020-papers)
ICPC 2020 Research Track Program Committee (https://conf.researchr.org/track/icpc-2020/icpc-2020-research)
Presentations
21/2/2017: Using Compilation/Decompilation to Enhance Clone Detection: The slides of my talk at IWSC '17.
3/10/2016: Similarity of Source Code in the Presence of Pervasive Modifications: The slides of my talk at SCAM '16.
9/10/2016: Searching for Configurations in Clone Evalution: A Replication Study: The slides of my talk at SSBSE '16 (Challenge Track).
15/06/2016: Similarity of Source Code in the Presence of Pervasive Modifications: The slides of my talk at the 12th International Summer School on Software Engineering (Student Talk) covering the complete results of CloPlag experiment.
01/06/2015: CloPlag: A Study of Effects of Code Obfuscation to Similarity Detection Tools: Latest update of CloPlag study with more results! It was given at COW 42 Annual Research Review of CREST.
06/02/2015: CloPlag: A Study of Effects of Code Obfuscation to Clone/Plagiarism Detection Tools: A presentation of intial results from the experiment on effects of code obfuscation to current similarity detection tools. It was given at a CREST Monthly Meeting.
Worth Reading
Interesting papers or articles regarding doing a PhD and conducting reserach in general.
- Schwartz, M. A., THE IMPORTANCE OF STUPIDITY IN SCIENTIFIC RESEARCH. Journal of Cell Science. 2008; 121, 1771.
- Harman, M., Draft Guidelines for My Students on Writing Software Engineering Research Papers.
- Jeff Offutt, Editorial: Standards for reviewing papers. Softw. Test. Verif. Reliab. 2007; 17:135–136
- Virginia Gewin, How to write a first-class paper
Worth Watching
Videos or slides that I found very valuable for doing research.
- Jones, S. P., How to write a great research paper.
- Jones, S. P., Hughes J., Launchbury, J., How to give a great research talk. 1993.
- Andreas Zeller, On Impact in Software Engineering Research
- Andreas Zeller, Relevance, Simplicity, and Innovation: Stories and Takeaways from SE research (from 42 minutes onwards)
- Alexander Serebrenik, Peer Reviews (and how to survive them)
