<s>
spaCy	B-Application
(	O
)	O
is	O
an	O
open-source	B-Application
software	I-Application
library	O
for	O
advanced	O
natural	B-Language
language	I-Language
processing	I-Language
,	O
written	O
in	O
the	O
programming	O
languages	O
Python	B-Language
and	O
Cython	B-Application
.	O
</s>
<s>
The	O
library	O
is	O
published	O
under	O
the	B-License
MIT	I-License
license	I-License
and	O
its	O
main	O
developers	O
are	O
Matthew	O
Honnibal	O
and	O
Ines	O
Montani	O
,	O
the	O
founders	O
of	O
the	O
software	O
company	O
Explosion	O
.	O
</s>
<s>
Unlike	O
NLTK	B-General_Concept
,	O
which	O
is	O
widely	O
used	O
for	O
teaching	O
and	O
research	O
,	O
spaCy	B-Application
focuses	O
on	O
providing	O
software	O
for	O
production	O
usage	O
.	O
</s>
<s>
spaCy	B-Application
also	O
supports	O
deep	B-Algorithm
learning	I-Algorithm
workflows	O
that	O
allow	O
connecting	O
statistical	O
models	O
trained	O
by	O
popular	O
machine	O
learning	O
libraries	O
like	O
TensorFlow	B-Language
,	O
PyTorch	B-Algorithm
or	O
MXNet	B-Algorithm
through	O
its	O
own	O
machine	O
learning	O
library	O
Thinc	O
.	O
</s>
<s>
Using	O
Thinc	O
as	O
its	O
backend	O
,	O
spaCy	B-Application
features	O
convolutional	B-Architecture
neural	I-Architecture
network	I-Architecture
models	O
for	O
part-of-speech	O
tagging	O
,	O
dependency	O
parsing	O
,	O
text	B-Algorithm
categorization	I-Algorithm
and	O
named	B-General_Concept
entity	I-General_Concept
recognition	I-General_Concept
(	O
NER	O
)	O
.	O
</s>
<s>
Prebuilt	O
statistical	O
neural	B-Architecture
network	I-Architecture
models	I-Architecture
to	O
perform	O
these	O
tasks	O
are	O
available	O
for	O
23	O
languages	O
,	O
including	O
English	O
,	O
Portuguese	O
,	O
Spanish	O
,	O
Russian	O
and	O
Chinese	O
,	O
and	O
there	O
is	O
also	O
a	O
multi-language	O
NER	B-General_Concept
model	I-General_Concept
.	O
</s>
<s>
Version	O
1.0	O
was	O
released	O
on	O
October	O
19	O
,	O
2016	O
,	O
and	O
included	O
preliminary	O
support	O
for	O
deep	B-Algorithm
learning	I-Algorithm
workflows	O
by	O
supporting	O
custom	O
processing	O
pipelines	O
.	O
</s>
<s>
It	O
further	O
included	O
a	O
rule	O
matcher	O
that	O
supported	O
entity	B-General_Concept
annotations	O
,	O
and	O
an	O
officially	O
documented	O
training	O
API	O
.	O
</s>
<s>
Version	O
2.0	O
was	O
released	O
on	O
November	O
7	O
,	O
2017	O
,	O
and	O
introduced	O
convolutional	B-Architecture
neural	I-Architecture
network	I-Architecture
models	O
for	O
7	O
different	O
languages	O
.	O
</s>
<s>
It	O
also	O
supported	O
custom	O
processing	O
pipeline	O
components	O
and	O
extension	O
attributes	O
,	O
and	O
featured	O
a	O
built-in	O
trainable	O
text	B-Algorithm
classification	I-Algorithm
component	O
.	O
</s>
<s>
Version	O
3.0	O
was	O
released	O
on	O
February	O
1	O
,	O
2021	O
,	O
and	O
introduced	O
state-of-the-art	O
transformer-based	O
pipelines	O
.	O
</s>
<s>
This	O
version	O
dropped	O
support	O
for	O
Python	B-Language
2	O
.	O
</s>
<s>
spaCy	B-Application
comes	O
with	O
several	O
extensions	O
and	O
visualizations	O
that	O
are	O
available	O
as	O
free	O
,	O
open-source	B-Application
libraries	O
:	O
</s>
<s>
:	O
A	O
machine	O
learning	O
library	O
optimized	O
for	O
CPU	B-General_Concept
usage	O
and	O
deep	B-Algorithm
learning	I-Algorithm
with	O
text	O
input	O
.	O
</s>
<s>
:	O
A	O
library	O
for	O
computing	O
word	O
similarities	O
,	O
based	O
on	O
Word2vec	B-Algorithm
.	O
</s>
<s>
:	O
An	O
open-source	B-Application
dependency	O
parse	O
tree	O
visualizer	O
built	O
with	O
JavaScript	B-Language
,	O
CSS	B-Language
and	O
SVG	B-Application
.	O
</s>
<s>
:	O
An	O
open-source	B-Application
named	B-General_Concept
entity	I-General_Concept
visualizer	O
built	O
with	O
JavaScript	B-Language
and	O
CSS	B-Language
.	O
</s>
