"Data were collected through an online survey and by searching project archives. On Sourceforge.net, each developer was uniquely identified with a user account, and the developer’s performance was assessed through the number of function points accepted by the project in a certain time period, obtained through conversion and calculation from the project’s code repository. Data for other constructs were obtained from the developers’ response to the online survey. "
"a developer’s performance was measured by the number of function points made and accepted into the project during the observed time period."
project age, development status, license type, number of developers
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