Focus-shifting patterns of OSS developers and their congruence with call graphs
Abstract
Developers in complex, self-organized open-source projects often work on many different files, and over time switch focus between them. Shifting focus can have impact on the software quality and productivity, and is thus an important topic of investigation. In this paper, we study focus shifting patterns (FSPs) of developers by comparing trace data from a dozen open source software (OSS) projects of their longitudinal commit activities and file dependencies from the projects call graphs. Using information theoretic measures of network structure, we find that fairly complex focus-shifting patterns emerge, and FSPs in the same project are more similar to each other. We show that developers tend to shift focus along with, rather than away from, software dependency links described by the call graphs. This tendency becomes weaker as either the interval between successive commits, or the organizational distance between committed files (i.e. directory distance), gets larger. Interestingly, this tendency appears stronger with more productive developers. We hope our study will initiate interest in further understanding of FSPs, which can ultimately help to (1) improve current recommender systems to predict the next focus of developers, and (2) provide insight into better call graph design, so as to facilitate developers' work.
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Developers seek information about how to use APIs, about data or control flow, and about requirements.
“These include the need for information about how to use APIs [10], about data or control flow [23,46], and about requirements [31].”
From Foraging and navigations, fundamentally: developers' predictions of value and cost (2016) · cites this paper as [46]
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- Authors
- Xuan, Q., Okano, A., Devanbu, P., & Filkov, V.
- Affiliations
- Zhejiang University of Technology (CN)
- University of California, Davis (US)
- University of California at Davis, USA
- Venue
- Proceedings of the 22nd ACM SIGSOFT International Symposium on Foundations of Software Engineering
- Publisher
- ACM
- Published
- 2014-11-11
- Pages
- 401-412
- OpenAlex
- W1992375688
- Cited by
- 27
- References
- 53
- Citations by year
- 2026: 1 · 2021: 2 · 2020: 2 · 2019: 6 · 2018: 4 · 2017: 5 · 2016: 5 · 2015: 2
- FWCI
- 3.41
- Type
- conference paper
- Language
- en
- Open access
- closed
- Locations
- ACM Joint European Software Engineering Conference and Symposium on the Foundations of Software Engineering (ESEC/FSE) (publishedVersion)
- Funders
- National Natural Science Foundation of China
- China Scholarship Council
- Air Force Office of Scientific Research
- Topics
- Physical Sciences › Computer Science › Information Systems › Software Engineering Research
- Physical Sciences › Computer Science › Computer Science Applications › Open Source Software Innovations
- Physical Sciences › Computer Science › Information Systems › Software Engineering Techniques and Practices
- Keywords
- open source software, call graph, developer behavior, commit activity, developer productivity, organizational distance, recommender systems
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