Community Health

Ratio of non-core committers (drive-by committers) Can indicate openess to outsiders

In the below queries, non-core committers are defined as committers who do not have commit rights.

GHTorrent Database

Project members have commit rights for the repo.

select count(commits.id) as num_member_commits, projects.name as project_name, projects.url as url
from
commits
join projects on projects.id = commits.project_id
join users on commits.author_id = users.id
join project_members on project_members.repo_id = projects.id
where project_members.user_id = commits.author_id
group by projects.id

select count(commits.id) as num_commits, projects.name as project_name, projects.url as url
from
commits
join projects on commits.project_id = projects.id
join users on users.id = commits.author_id
where (projects.id, users.id) not in
	(select repo_id, user_id from project_members)
group by projects.id

Describe how the metric is encoded for sharing and communicating between programs.

Papers released in the academic literature that uses the metric.

Links to websites that add value to the understanding of the metric.

Authors of the metric page and authors who made significant changes.