Table 4. Commits aggregation using k-means clustering classification.

Cluster no.	Cluster center	Committers	%Committers
1	56	4,000	85.82%
2	737	424	9.10%
3	1,921	131	2.81%
4	3,560.8	65	1.39%
5	6,199.8	30	0.64%
6	9,336	3	0.06%
7	12,269	2	0.04%
8	14,230	5	0.11%
9	19,053	1	0.02%