<s>
A	O
semantic	B-General_Concept
mapper	I-General_Concept
is	O
tool	O
or	O
service	O
that	O
aids	O
in	O
the	O
transformation	O
of	O
data	O
elements	O
from	O
one	O
namespace	O
into	O
another	O
namespace	O
.	O
</s>
<s>
A	O
semantic	B-General_Concept
mapper	I-General_Concept
is	O
an	O
essential	O
component	O
of	O
a	O
semantic	B-Application
broker	I-Application
and	O
one	O
tool	O
that	O
is	O
enabled	O
by	O
the	O
Semantic	O
Web	O
technologies	O
.	O
</s>
<s>
Essentially	O
the	O
problems	O
arising	O
in	O
semantic	B-General_Concept
mapping	I-General_Concept
are	O
the	O
same	O
as	O
in	O
data	B-General_Concept
mapping	I-General_Concept
for	O
data	B-General_Concept
integration	I-General_Concept
purposes	O
,	O
with	O
the	O
difference	O
that	O
here	O
the	O
semantic	O
relationships	O
are	O
made	O
explicit	O
through	O
the	O
use	O
of	O
semantic	O
nets	O
or	O
ontologies	O
which	O
play	O
the	O
role	O
of	O
data	B-Application
dictionaries	I-Application
in	O
data	B-General_Concept
mapping	I-General_Concept
.	O
</s>
<s>
A	O
semantic	B-General_Concept
mapper	I-General_Concept
must	O
have	O
access	O
to	O
three	O
data	O
sets	O
:	O
</s>
<s>
,	O
or	O
in	O
OWL	B-Language
)	O
.	O
</s>
<s>
A	O
semantic	B-General_Concept
mapper	I-General_Concept
processes	O
on	O
a	O
list	O
of	O
data	O
elements	O
in	O
the	O
source	O
namespace	O
.	O
</s>
<s>
The	O
semantic	B-General_Concept
mapper	I-General_Concept
will	O
successively	O
translate	O
the	O
data	O
elements	O
from	O
the	O
source	O
namespace	O
to	O
the	O
destination	O
namespace	O
.	O
</s>
<s>
The	O
mapping	O
does	O
not	O
necessarily	O
need	O
to	O
be	O
a	O
one-to-one	B-Algorithm
mapping	O
.	O
</s>
<s>
Some	O
semantic	B-General_Concept
mappers	I-General_Concept
are	O
static	O
in	O
that	O
they	O
will	O
do	O
a	O
one-time	O
data	O
transforms	O
.	O
</s>
<s>
The	O
output	O
of	O
this	O
program	O
may	O
be	O
any	O
transformation	O
system	O
such	O
as	O
XSLT	B-Application
,	O
a	O
Java	B-Language
program	O
or	O
a	O
program	O
in	O
some	O
other	O
procedural	B-Application
language	I-Application
.	O
</s>
