<s>
In	O
computational	O
linguistics	O
,	O
JAPE	B-General_Concept
is	O
the	O
Java	O
Annotation	O
Patterns	O
Engine	O
,	O
a	O
component	O
of	O
the	O
open-source	O
General	B-Language
Architecture	I-Language
for	I-Language
Text	I-Language
Engineering	I-Language
(	O
GATE	O
)	O
platform	O
.	O
</s>
<s>
JAPE	B-General_Concept
is	O
a	O
finite	B-Architecture
state	I-Architecture
transducer	I-Architecture
that	O
operates	O
over	O
annotations	O
based	O
on	O
regular	O
expressions	O
.	O
</s>
<s>
Thus	O
,	O
it	O
is	O
useful	O
for	O
pattern-matching	O
,	O
semantic	O
extraction	O
,	O
and	O
many	O
other	O
operations	O
over	O
syntactic	O
trees	O
such	O
as	O
those	O
produced	O
by	O
natural	O
language	O
parsers	B-Language
.	O
</s>
<s>
JAPE	B-General_Concept
is	O
a	O
version	O
of	O
CPSL	O
–	O
Common	O
Pattern	O
Specification	O
Language	O
.	O
</s>
<s>
A	O
JAPE	B-General_Concept
grammar	O
consists	O
of	O
a	O
set	O
of	O
phases	O
,	O
each	O
of	O
which	O
consists	O
of	O
a	O
set	O
of	O
pattern/action	O
rules	O
.	O
</s>
<s>
The	O
phases	O
run	O
sequentially	O
and	O
constitute	O
a	O
cascade	O
of	O
finite	B-Architecture
state	I-Architecture
transducers	I-Architecture
over	O
annotations	O
.	O
</s>
