<s>
Within	O
software	B-General_Concept
engineering	I-General_Concept
,	O
the	O
mining	B-General_Concept
software	I-General_Concept
repositories	I-General_Concept
(	O
MSR	O
)	O
field	O
analyzes	O
the	O
rich	O
data	O
available	O
in	O
software	O
repositories	O
,	O
such	O
as	O
version	B-Architecture
control	I-Architecture
repositories	O
,	O
mailing	O
list	O
archives	O
,	O
bug	B-Application
tracking	I-Application
systems	I-Application
,	O
issue	B-Application
tracking	I-Application
systems	I-Application
,	O
etc	O
.	O
</s>
<s>
to	O
uncover	O
interesting	O
and	O
actionable	O
information	O
about	O
software	O
systems	O
,	O
projects	O
and	O
software	B-General_Concept
engineering	I-General_Concept
.	O
</s>
<s>
Coupled	O
change	O
analysis	O
aims	O
to	O
extract	O
the	O
coupling	O
out	O
of	O
the	O
version	B-Architecture
control	I-Architecture
system	I-Architecture
for	O
a	O
project	O
.	O
</s>
<s>
There	O
are	O
many	O
different	O
kinds	O
of	O
commits	O
in	O
version	B-Architecture
control	I-Architecture
systems	I-Architecture
,	O
e.g.	O
</s>
<s>
It	O
is	O
possible	O
to	O
generate	O
useful	O
documentation	O
from	O
mining	B-General_Concept
software	I-General_Concept
repositories	I-General_Concept
.	O
</s>
<s>
The	O
primary	O
mining	O
data	O
comes	O
from	O
version	B-Architecture
control	I-Architecture
systems	I-Architecture
.	O
</s>
