<s>
Software	B-Algorithm
mining	I-Algorithm
is	O
an	O
application	O
of	O
knowledge	O
discovery	O
in	O
the	O
area	O
of	O
software	O
modernization	O
which	O
involves	O
understanding	O
existing	O
software	O
artifacts	O
.	O
</s>
<s>
An	O
entity	B-Architecture
relationship	I-Architecture
is	O
a	O
frequent	O
format	O
of	O
representing	O
knowledge	O
obtained	O
from	O
existing	O
software	O
.	O
</s>
<s>
Object	B-Architecture
Management	I-Architecture
Group	I-Architecture
(	O
OMG	O
)	O
developed	O
specification	O
Knowledge	B-Language
Discovery	I-Language
Metamodel	I-Language
(	O
KDM	O
)	O
which	O
defines	O
an	O
ontology	B-Language
for	O
software	O
assets	O
and	O
their	O
relationships	O
for	O
the	O
purpose	O
of	O
performing	O
knowledge	O
discovery	O
of	O
existing	O
code	O
.	O
</s>
<s>
Software	B-Algorithm
mining	I-Algorithm
is	O
closely	O
related	O
to	O
data	B-Application
mining	I-Application
,	O
since	O
existing	O
software	O
artifacts	O
contain	O
enormous	O
business	O
value	O
,	O
key	O
for	O
the	O
evolution	O
of	O
software	O
systems	O
.	O
</s>
<s>
Instead	O
of	O
mining	O
individual	O
data	B-General_Concept
sets	I-General_Concept
,	O
software	B-Algorithm
mining	I-Algorithm
focuses	O
on	O
metadata	O
,	O
such	O
as	O
database	O
schemas	O
.	O
</s>
<s>
OMG	O
Knowledge	B-Language
Discovery	I-Language
Metamodel	I-Language
provides	O
an	O
integrated	O
representation	O
to	O
capturing	O
application	O
metadata	O
as	O
part	O
of	O
a	O
holistic	O
existing	O
system	O
metamodel	O
.	O
</s>
<s>
Text	B-Algorithm
mining	I-Algorithm
software	O
tools	O
enable	O
easy	O
handling	O
of	O
text	O
documents	O
for	O
the	O
purpose	O
of	O
data	O
analysis	O
including	O
automatic	O
model	O
generation	O
and	O
document	B-Algorithm
classification	I-Algorithm
,	O
document	O
clustering	O
,	O
document	O
visualization	O
,	O
dealing	O
with	O
Web	O
documents	O
,	O
and	O
crawling	B-Application
the	I-Application
Web	I-Application
.	O
</s>
<s>
Software	B-Algorithm
mining	I-Algorithm
addresses	O
structure	O
,	O
behavior	O
as	O
well	O
as	O
the	O
data	O
processed	O
by	O
the	O
software	O
system	O
.	O
</s>
