<s>
It	O
can	O
automatically	O
cluster	B-Algorithm
small	O
collections	O
of	O
documents	O
,	O
e.g.	O
</s>
<s>
Carrot²	O
is	O
written	O
in	O
Java	B-Language
and	O
distributed	O
under	O
the	O
BSD	B-Operating_System
license	I-Operating_System
.	O
</s>
<s>
The	O
initial	O
version	O
of	O
Carrot²	O
was	O
implemented	O
in	O
2001	O
by	O
Dawid	O
Weiss	O
as	O
part	O
of	O
his	O
MSc	O
thesis	O
to	O
validate	O
the	O
applicability	O
of	O
the	O
STC	O
clustering	B-Algorithm
algorithm	I-Algorithm
to	O
clustering	O
search	O
results	O
in	O
Polish	O
.	O
</s>
<s>
In	O
2003	O
,	O
a	O
number	O
of	O
other	O
search	O
results	O
clustering	B-Algorithm
algorithms	I-Algorithm
were	O
added	O
,	O
including	O
Lingo	O
,	O
a	O
novel	O
text	O
clustering	B-Algorithm
algorithm	I-Algorithm
designed	O
specifically	O
for	O
clustering	O
of	O
search	O
results	O
.	O
</s>
<s>
In	O
2009	O
,	O
version	O
3.0	O
brought	O
significant	O
improvements	O
in	O
clustering	O
quality	O
,	O
simplified	O
API	O
and	O
new	O
GUI	O
application	O
for	O
tuning	O
clustering	O
based	O
on	O
the	O
Eclipse	O
Rich	B-Architecture
Client	I-Architecture
Platform	I-Architecture
.	O
</s>
<s>
3.16.0	O
May	O
2018	O
An	O
overhaul	O
of	O
Java	B-Language
9+	O
compatibility	O
issues	O
.	O
</s>
<s>
3.10.3	O
August	O
2015	O
Repackaged	O
Google	O
Guava	O
to	O
avoid	O
conflicts	O
in	O
Solr	B-Language
.	O
</s>
<s>
3.10.2	O
July	O
2015	O
Minor	O
fixes	O
to	O
the	O
Workbench	O
(	O
Arabic	O
cluster	B-Algorithm
display	O
)	O
.	O
</s>
<s>
3.7.0	O
April	O
2013	O
Infrastructure	O
changes	O
to	O
the	O
core	O
(	O
string	O
IDs	O
)	O
,	O
better	O
Solr	B-Language
integration	O
XSLT	O
,	O
Workbench	O
tweaks	O
for	O
larger	O
inputs	O
,	O
updated	O
dependencies	O
.	O
</s>
<s>
3.6.3	O
April	O
2013	O
Minor	O
bug	O
fixes	O
and	O
improvements	O
:	O
customization	O
of	O
Solr	B-Language
adapter	O
XSLT	O
,	O
Workbench	O
tweaks	O
for	O
larger	O
inputs	O
,	O
updated	O
dependencies	O
.	O
</s>
<s>
Carrot²	O
4.0	O
is	O
predominantly	O
a	O
Java	B-Language
programming	I-Language
library	O
with	O
public	O
APIs	O
for	O
management	O
of	O
language-specific	O
resources	O
,	O
algorithm	O
configuration	O
and	O
execution	O
.	O
</s>
<s>
Carrot²	O
offers	O
a	O
few	O
document	O
clustering	B-Algorithm
algorithms	I-Algorithm
that	O
place	O
emphasis	O
on	O
the	O
quality	O
of	O
cluster	B-Algorithm
labels	O
:	O
</s>
<s>
Carrot	O
Search	O
,	O
a	O
commercial	O
spin-off	O
of	O
the	O
Carrot²	O
project	O
,	O
works	O
on	O
further	O
development	O
of	O
Carrot²	O
,	O
offers	O
a	O
real-time	O
text	O
clustering	B-Algorithm
algorithm	I-Algorithm
compliant	O
with	O
the	O
Carrot²	O
framework	O
as	O
well	O
as	O
text	B-Algorithm
mining	I-Algorithm
consulting	O
services	O
based	O
on	O
open	O
source	O
and	O
proprietary	O
software	O
.	O
</s>
<s>
High	O
Performance	O
Primitive	O
Collections	O
for	O
Java	B-Language
(	O
HPPC	O
)	O
:	O
Lists	O
,	O
Sets	O
,	O
Maps	O
and	O
other	O
collections	O
of	O
primitives	O
for	O
Java	B-Language
tuned	O
for	O
highest	O
performance	O
and	O
memory	O
efficiency	O
.	O
</s>
<s>
jSuffixArrays	O
:	O
Several	O
Java	B-Language
implementations	O
of	O
the	O
Suffix	O
Array	O
data	O
structure	O
with	O
different	O
performance	O
and	O
memory	O
characteristics	O
.	O
</s>
