Automatic Core-Developer Identification on GitHub:
A Validation Study

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RQ3: Which metrics and network-construction methods are most accurate in classifying developers into core and peripheral?

Sizes of the set of privileged+extended developers, of the set of classified core developers, and of the set of classified peripheral developers

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unsimplified, undirected, all contributors
unsimplified, directed, all contributors
simplified, undirected, all contributors
simplified, directed, all contributors
unsimplified, undirected, code contributors
unsimplified, directed, code contributors
simplified, undirected, code contributors
simplified, directed, code contributors

Networks: unsimplified, undirected, all contributors
Accuracy assessment based on privileged+extended events
sizes-unsimplified-undirected-allcontributors-privileged+extended-3months
sizes-unsimplified-undirected-allcontributors-privileged+extended-6months
sizes-unsimplified-undirected-allcontributors-privileged+extended-9months
sizes-unsimplified-undirected-allcontributors-privileged+extended-12months
sizes-unsimplified-undirected-allcontributors-privileged+extended-3months-sliding
sizes-unsimplified-undirected-allcontributors-privileged+extended-6months-sliding
sizes-unsimplified-undirected-allcontributors-privileged+extended-9months-sliding
sizes-unsimplified-undirected-allcontributors-privileged+extended-12months-sliding

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Networks: unsimplified, directed, all contributors
Accuracy assessment based on privileged+extended events
sizes-unsimplified-directed-allcontributors-privileged+extended-3months
sizes-unsimplified-directed-allcontributors-privileged+extended-6months
sizes-unsimplified-directed-allcontributors-privileged+extended-9months
sizes-unsimplified-directed-allcontributors-privileged+extended-12months
sizes-unsimplified-directed-allcontributors-privileged+extended-3months-sliding
sizes-unsimplified-directed-allcontributors-privileged+extended-6months-sliding
sizes-unsimplified-directed-allcontributors-privileged+extended-9months-sliding
sizes-unsimplified-directed-allcontributors-privileged+extended-12months-sliding

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Networks: simplified, undirected, all contributors
Accuracy assessment based on privileged+extended events
sizes-simplified-undirected-allcontributors-privileged+extended-3months
sizes-simplified-undirected-allcontributors-privileged+extended-6months
sizes-simplified-undirected-allcontributors-privileged+extended-9months
sizes-simplified-undirected-allcontributors-privileged+extended-12months
sizes-simplified-undirected-allcontributors-privileged+extended-3months-sliding
sizes-simplified-undirected-allcontributors-privileged+extended-6months-sliding
sizes-simplified-undirected-allcontributors-privileged+extended-9months-sliding
sizes-simplified-undirected-allcontributors-privileged+extended-12months-sliding

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Networks: simplified, directed, all contributors
Accuracy assessment based on privileged+extended events
sizes-simplified-directed-allcontributors-privileged+extended-3months
sizes-simplified-directed-allcontributors-privileged+extended-6months
sizes-simplified-directed-allcontributors-privileged+extended-9months
sizes-simplified-directed-allcontributors-privileged+extended-12months
sizes-simplified-directed-allcontributors-privileged+extended-3months-sliding
sizes-simplified-directed-allcontributors-privileged+extended-6months-sliding
sizes-simplified-directed-allcontributors-privileged+extended-9months-sliding
sizes-simplified-directed-allcontributors-privileged+extended-12months-sliding

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Networks: unsimplified, undirected, code contributors
Accuracy assessment based on privileged+extended events
sizes-unsimplified-undirected-codecontributors-privileged+extended-3months
sizes-unsimplified-undirected-codecontributors-privileged+extended-6months
sizes-unsimplified-undirected-codecontributors-privileged+extended-9months
sizes-unsimplified-undirected-codecontributors-privileged+extended-12months
sizes-unsimplified-undirected-codecontributors-privileged+extended-3months-sliding
sizes-unsimplified-undirected-codecontributors-privileged+extended-6months-sliding
sizes-unsimplified-undirected-codecontributors-privileged+extended-9months-sliding
sizes-unsimplified-undirected-codecontributors-privileged+extended-12months-sliding

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Networks: unsimplified, directed, code contributors
Accuracy assessment based on privileged+extended events
sizes-unsimplified-directed-codecontributors-privileged+extended-3months
sizes-unsimplified-directed-codecontributors-privileged+extended-6months
sizes-unsimplified-directed-codecontributors-privileged+extended-9months
sizes-unsimplified-directed-codecontributors-privileged+extended-12months
sizes-unsimplified-directed-codecontributors-privileged+extended-3months-sliding
sizes-unsimplified-directed-codecontributors-privileged+extended-6months-sliding
sizes-unsimplified-directed-codecontributors-privileged+extended-9months-sliding
sizes-unsimplified-directed-codecontributors-privileged+extended-12months-sliding

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Networks: simplified, undirected, code contributors
Accuracy assessment based on privileged+extended events
sizes-simplified-undirected-codecontributors-privileged+extended-3months
sizes-simplified-undirected-codecontributors-privileged+extended-6months
sizes-simplified-undirected-codecontributors-privileged+extended-9months
sizes-simplified-undirected-codecontributors-privileged+extended-12months
sizes-simplified-undirected-codecontributors-privileged+extended-3months-sliding
sizes-simplified-undirected-codecontributors-privileged+extended-6months-sliding
sizes-simplified-undirected-codecontributors-privileged+extended-9months-sliding
sizes-simplified-undirected-codecontributors-privileged+extended-12months-sliding

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Networks: simplified, directed, code contributors
Accuracy assessment based on privileged+extended events
sizes-simplified-directed-codecontributors-privileged+extended-3months
sizes-simplified-directed-codecontributors-privileged+extended-6months
sizes-simplified-directed-codecontributors-privileged+extended-9months
sizes-simplified-directed-codecontributors-privileged+extended-12months
sizes-simplified-directed-codecontributors-privileged+extended-3months-sliding
sizes-simplified-directed-codecontributors-privileged+extended-6months-sliding
sizes-simplified-directed-codecontributors-privileged+extended-9months-sliding
sizes-simplified-directed-codecontributors-privileged+extended-12months-sliding

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