Additional Plots

This page contains additional plots.

Only ground truth

These plots and tables are based only on the ground truth, i.e., the manually classified commits, without use of a sequence classification model.

Size

	Perfective		Corrective
Metric	p-value	effect size	p-value	effect size
#lines added	<0.0001	0.20 (s)	<0.0001	0.20 (s)
#lines deleted	<0.0001	0.13 (s)	<0.0001	0.17 (s)
#files modified	0.2829	-	<0.0001	0.22 (s)
#hunks	0.7009	-	<0.0001	0.21 (s)

ColumbusQM Metrics

	Perfective		Corrective
Metric	p-value	effect size	p-value	effect size
McC	<0.0001	0.37 (m)	1.0000	-
LLOC	<0.0001	0.42 (m)	1.0000	-
NLE	<0.0001	0.26 (s)	0.9577	-
NUMPAR	<0.0001	0.24 (s)	<0.0001	0.09 (n)
CC	1.0000	-	<0.0001	0.12 (s)
CLOC	<0.0001	0.19 (s)	0.1906	-
CD	0.9303	-	<0.0001	0.15 (s)
AD	0.1556	-	<0.0001	0.10 (s)
NOA	<0.0001	0.08 (n)	<0.0001	0.09 (n)
CBO	<0.0001	0.18 (s)	0.0145	-
NII	<0.0001	0.19 (s)	0.0005	-
Minor	<0.0001	0.18 (s)	0.0005	-
Major	<0.0001	0.10 (n)	<0.0002	0.06 (n)
Critical	<0.0001	0.06 (n)	0.1111	-

Metric values prior to change (mean per file)

Metric	Median all	Median perfective	Median corrective
McCC	21.00	18.00	34.00
LOC	187.22	160.38	270.00
NLE	9.50	7.67	15.20
NUMPAR	16.00	14.67	21.00
CC	0.04	0.04	0.04
CLOC	48.22	55.00	55.00
CD	0.25	0.31	0.24
AD	0.50	0.63	0.49
NOA	1.00	1.00	1.00
CBO	9.50	8.00	14.00
NII	8.00	8.00	9.00
Minor	7.00	5.43	10.00
Major	2.00	1.25	2.67
Critical	0.00	0.00	0.00

	Perfective		Corrective
Metric	p-value	effect size	p-value	effect size
McC	0.0003	-	0.0016	-
LLOC	0.0005	-	0.1138	-
NLE	0.0003	-	0.0072	-
NUMPAR	0.5433	-	0.4704	-
CC	0.4142	-	0.0210	-
CLOC	<0.0001	0.10 (s)	0.0111	-
CD	<0.0001	0.15 (s)	<0.0001	0.16 (s)
AD	<0.0001	0.15 (n)	<0.0001	0.15 (s)
NOA	0.6847	-	0.2103	-
CBO	<0.0001	0.11 (n)	0.0190	-
NII	0.0510	-	0.0105	-
Minor	0.0006	-	0.6288	-
Major	0.0006	-	0.6288	-
Critical	0.0179	-	0.5730	-

Only Changed Files

These plots are only showing metrics from files which have changed excluding additions and deletions.

Size

	Perfective		Corrective
Metric	p-value	effect size	p-value	effect size
#lines added	<0.0001	0.20 (s)	<0.0001	0.21 (s)
#lines deleted	<0.0001	0.15 (s)	<0.0001	0.16 (s)
#files modified	0.2081	-	<0.0001	0.22 (s)
#hunks	<0.0001	0.01 (n)	<0.0001	0.22 (s)

ColumbusQM Metrics

	Perfective		Corrective
Metric	p-value	effect size	p-value	effect size
McC	<0.0001	0.35 (m)	1.0000	-
LLOC	<0.0001	0.40 (m)	1.0000	-
NLE	<0.0001	0.24 (s)	1.0000	-
NUMPAR	<0.0001	0.22 (s)	<0.0001	0.13 (n)
CC	1.0000	-	<0.0001	0.13 (s)
CLOC	<0.0001	0.13 (s)	<0.0001	0.08 (n)
CD	1.0000	-	<0.0001	0.18 (s)
AD	0.7499	-	<0.0001	0.11 (s)
NOA	<0.0001	0.06 (n)	<0.0001	0.09 (n)
CBO	<0.0001	0.16 (s)	<0.0001	0.09 (n)
NII	<0.0001	0.16 (s)	<0.0001	0.05 (n)
Minor	<0.0001	0.19 (s)	<0.0001	0.07 (n)
Major	<0.0001	0.10 (n)	<0.0001	0.07 (n)
Critical	<0.0001	0.04 (n)	<0.0001	0.04 (n)

Metric values prior to change (mean per file)

Metric	Median all	Median perfective	Median corrective
McCC	21.50	18.17	33.08
LOC	185.25	161.00	264.00
NLE	9.50	8.00	14.00
NUMPAR	16.00	15.00	22.00
CC	0.04	0.04	0.05
CLOC	46.00	54.00	54.00
CD	0.25	0.31	0.24
AD	0.48	0.64	0.46
NOA	1.00	1.00	1.00
CBO	9.50	7.67	14.00
NII	8.00	8.00	9.50
Minor	7.00	6.0	9.50
Major	2.00	1.14	3.00
Critical	0.00	0.00	0.00