As part of my PhD research on code authorship, we calculated the Truck Factor (TF) of some popular GitHub repositories.
As you probably know, the Truck (or Bus) Factor designates the minimal number of developers that have to be hit by a truck (or quit) before a project is incapacitated. In our work, we consider that a system is in trouble if more than 50% of its files become orphan (i.e., without a main author). More details on our work in this preprint: https://peerj.com/preprints/1233 We calculated the TF for scikit-learn and obtained a value of 7. The developers responsible for this TF are: Fabian Pedregosa - author of 22% of the files Gael varoquaux - author of 13% of the files Andreas Mueller - author of 12% of the files Olivier Grisel - author of 10% of the files Lars Buitinck - author of 10% of the files Jake Vanderplas - author of 6% of the files Vlad Niculae - author of 5% of the files To validate our results, we would like to ask scikit-learn developers the following three brief questions: (a) Do you agree that the listed developers are the main developers of scikit-learn? (b) Do you agree that scikit-learn will be in trouble if the listed developers leave the project (e.g., if they win in the lottery, to be less morbid)? (c) Does scikit-learn have some characteristics that would attenuate the loss of the listed developers (e.g., detailed documentation)? Thanks in advance for your collaboration, Guilherme Avelino PhD Student Applied Software Engineering Group (ASERG) UFMG, Brazil http://aserg.labsoft.dcc.ufmg.br/ -- Prof. Guilherme Amaral Avelino Universidade Federal do Piauí Departamento de Computação
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