Code churn: a measure for estimating the impact of code change
Abstract
This study presents a methodology that will produce a viable fault surrogate. The focus of the effort is on the precise measurement of software development process and product outcomes. Tools and processes for the static measurement of the source code have been installed and made operational in a large embedded software system. Source code measurements have been gathered unobtrusively for each build in the software evolution process. The measurements are synthesized to obtain the fault surrogate. The complexity of sequential builds is compared and a new measure, code churn, is calculated. This paper demonstrates the effectiveness of code complexity churn by validating it against the testing problem reports.
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Code churn is a widely recognized indicator of software maintainability.
“Code churn is a widely recognized indicator of software maintainability [22].”
From Self-Admitted GenAI Usage in Open-Source Software (2026) · cites this paper as [22]
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Self-Admitted GenAI Usage in Open-Source Software
Xiao, T., Fan, Y., Calefato, F., Treude, C., Kula, R. G., Hata, H., & Baltes, S. (2026) · IEEE Transactions on Software Engineering · doi:10.1109/tse.2026.3681886 · Cited by 1 · see citing works
- Authors
- Munson, J. C., & Elbaum, S. G.
- Affiliations
- University of Idaho (US)
- ORCID
- Elbaum, S.G.
- Venue
- Proceedings. International Conference on Software Maintenance (Cat. No. 98CB36272)
- Publisher
- IEEE Comput. Soc
- Published
- 2002-11-27
- Pages
- 24-31
- OpenAlex
- W2108161968
- Cited by
- 153
- References
- 0
- Citations by year
- 2026: 4 · 2025: 6 · 2024: 2 · 2023: 3 · 2022: 6 · 2021: 9 · 2020: 7 · 2019: 7 · 2018: 7 · 2017: 10 · 2016: 2 · 2015: 6 · 2014: 15 · 2013: 9 · 2012: 10
- FWCI
- 3.00
- Type
- conference paper
- Language
- en
- Open access
- closed
- Locations
- International Conference on Software Maintenance (publishedVersion)
- Topics
- Physical Sciences › Computer Science › Information Systems › Software Engineering Research
- Physical Sciences › Computer Science › Information Systems › Software Engineering Techniques and Practices
- Physical Sciences › Computer Science › Software › Software Reliability and Analysis Research
- Keywords
- code churn, software complexity, static analysis, embedded software, software evolution, fault prediction, software testing
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Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
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