<s>
In	O
metadata	O
,	O
a	O
match	B-General_Concept
report	I-General_Concept
is	O
a	O
report	O
that	O
compares	O
two	O
distinct	O
data	B-Application
dictionaries	I-Application
and	O
creates	O
a	O
list	O
of	O
the	O
data	O
elements	O
that	O
have	O
been	O
identified	O
as	O
semantically	O
equivalent	O
.	O
</s>
<s>
Match	B-General_Concept
reports	I-General_Concept
are	O
critical	O
for	O
systems	O
that	O
wish	O
to	O
automatically	O
exchange	O
data	O
such	O
as	O
intelligent	O
software	O
agents	O
.	O
</s>
<s>
If	O
one	O
computer	O
system	O
is	O
requesting	O
a	O
report	O
from	O
a	O
remote	O
system	O
that	O
uses	O
a	O
distinct	O
data	B-Application
dictionary	I-Application
and	O
all	O
of	O
the	O
data	O
elements	O
on	O
the	O
report	O
manifest	O
are	O
included	O
in	O
the	O
match	B-General_Concept
report	I-General_Concept
the	O
report	O
request	O
can	O
be	O
executed	O
.	O
</s>
<s>
Match	B-General_Concept
reports	I-General_Concept
are	O
useful	O
if	O
data	B-Application
dictionaries	I-Application
use	O
a	O
metadata	O
tagging	O
system	O
such	O
as	O
the	O
UDEF	B-General_Concept
.	O
</s>
