TL;DR
This paper presents a visualization method for analyzing contributions in open-source projects by graphically representing developer collaboration and file modifications, demonstrated on Germany's COVID-19 exposure notification app.
Contribution
It introduces a provenance-based visualization approach to depict collaboration patterns in open-source development, applied to a real-world COVID-19 app.
Findings
Visualizes developer collaboration and contribution extent
Reveals joint file modifications among developers
Applied successfully to a large open-source project
Abstract
We want to analyze visually, to what extend team members and external developers contribute to open-source projects. This gives a high-level impression about collaboration in that projects. We achieve this by recording provenance of the development process and use graph drawing on the resulting provenance graph. Our graph drawings show, which developers are jointly changed the same files -- and to what extent -- which we show at Germany's COVID-19 exposure notification app 'Corona-Warn-App'.
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