<s>
In	O
natural	B-Language
language	I-Language
processing	I-Language
a	O
w-shingling	B-General_Concept
is	O
a	O
set	O
of	O
unique	O
shingles	O
(	O
therefore	O
n-grams	B-Language
)	O
each	O
of	O
which	O
is	O
composed	O
of	O
contiguous	O
subsequences	O
of	O
tokens	O
within	O
a	O
document	O
,	O
which	O
can	O
then	O
be	O
used	O
to	O
ascertain	O
the	O
similarity	B-Algorithm
between	I-Algorithm
documents	I-Algorithm
.	O
</s>
