<s>
Apache	B-Language
Lucene	I-Language
is	O
a	O
free	B-License
and	I-License
open-source	I-License
search	B-Application
engine	I-Application
software	B-Library
library	I-Library
,	O
originally	O
written	O
in	O
Java	B-Language
by	O
Doug	O
Cutting	O
.	O
</s>
<s>
It	O
is	O
supported	O
by	O
the	O
Apache	O
Software	O
Foundation	O
and	O
is	O
released	O
under	O
the	O
Apache	B-Application
Software	I-Application
License	I-Application
.	O
</s>
<s>
Lucene	B-Language
is	O
widely	O
used	O
as	O
a	O
standard	O
foundation	O
for	O
non-research	O
search	B-Application
applications	O
.	O
</s>
<s>
Lucene	B-Language
has	O
been	O
ported	O
to	O
other	O
programming	O
languages	O
including	O
Object	B-Language
Pascal	I-Language
,	O
Perl	B-Language
,	O
C#	B-Application
,	O
C++	B-Language
,	O
Python	B-Language
,	O
Ruby	B-Language
and	O
PHP	B-Application
.	O
</s>
<s>
Doug	O
Cutting	O
originally	O
wrote	O
Lucene	B-Language
in	O
1999	O
.	O
</s>
<s>
Lucene	B-Language
was	O
his	O
fifth	O
search	B-Application
engine	I-Application
,	O
having	O
previously	O
written	O
two	O
while	O
at	O
Xerox	O
PARC	O
,	O
one	O
at	O
Apple	O
,	O
and	O
a	O
fourth	O
at	O
Excite	O
.	O
</s>
<s>
It	O
was	O
initially	O
available	O
for	O
download	O
from	O
its	O
home	O
at	O
the	O
SourceForge	B-Application
web	O
site	O
.	O
</s>
<s>
It	O
joined	O
the	O
Apache	O
Software	O
Foundation	O
's	O
Jakarta	B-Language
family	O
of	O
open-source	O
Java	B-Language
products	O
in	O
September	O
2001	O
and	O
became	O
its	O
own	O
top-level	O
Apache	O
project	O
in	O
February	O
2005	O
.	O
</s>
<s>
The	O
name	O
Lucene	B-Language
is	O
Doug	O
Cutting	O
's	O
wife	O
's	O
middle	O
name	O
and	O
her	O
maternal	O
grandmother	O
's	O
first	O
name	O
.	O
</s>
<s>
Lucene	B-Language
formerly	O
included	O
a	O
number	O
of	O
sub-projects	O
,	O
such	O
as	O
Lucene.NET	O
,	O
Mahout	B-Application
,	O
Tika	B-Language
and	O
Nutch	B-Language
.	O
</s>
<s>
In	O
March	O
2010	O
,	O
the	O
Apache	B-Language
Solr	I-Language
search	B-Application
server	O
joined	O
as	O
a	O
Lucene	B-Language
sub-project	O
,	O
merging	O
the	O
developer	O
communities	O
.	O
</s>
<s>
In	O
March	O
2021	O
,	O
Lucene	B-Language
changed	O
its	O
logo	O
,	O
and	O
Apache	B-Language
Solr	I-Language
became	O
a	O
top	O
level	O
Apache	O
project	O
again	O
,	O
independent	O
from	O
Lucene	B-Language
.	O
</s>
<s>
While	O
suitable	O
for	O
any	O
application	O
that	O
requires	O
full	O
text	O
indexing	B-Application
and	O
searching	O
capability	O
,	O
Lucene	B-Language
is	O
recognized	O
for	O
its	O
utility	O
in	O
the	O
implementation	O
of	O
Internet	B-Application
search	I-Application
engines	I-Application
and	O
local	O
,	O
single-site	O
searching	O
.	O
</s>
<s>
Lucene	B-Language
includes	O
a	O
feature	O
to	O
perform	O
a	O
fuzzy	O
search	B-Application
based	O
on	O
edit	O
distance	O
.	O
</s>
<s>
Lucene	B-Language
has	O
also	O
been	O
used	O
to	O
implement	O
recommendation	O
systems	O
.	O
</s>
<s>
For	O
example	O
,	O
Lucene	B-Language
's	O
'	O
MoreLikeThis	O
 '	O
Class	O
can	O
generate	O
recommendations	O
for	O
similar	O
documents	O
.	O
</s>
<s>
In	O
a	O
comparison	O
of	O
the	O
term	O
vector-based	O
similarity	O
approach	O
of	O
'	O
MoreLikeThis	O
 '	O
with	O
citation-based	O
document	O
similarity	O
measures	O
,	O
such	O
as	O
co-citation	O
and	O
co-citation	O
proximity	O
analysis	O
,	O
Lucene	B-Language
's	O
approach	O
excelled	O
at	O
recommending	O
documents	O
with	O
very	O
similar	O
structural	O
characteristics	O
and	O
more	O
narrow	O
relatedness	O
.	O
</s>
<s>
Lucene	B-Language
itself	O
is	O
just	O
an	O
indexing	B-Application
and	O
search	B-Application
library	O
and	O
does	O
not	O
contain	O
crawling	B-Application
and	O
HTML	O
parsing	B-Language
functionality	O
.	O
</s>
<s>
However	O
,	O
several	O
projects	O
extend	O
Lucene	B-Language
's	O
capability	O
:	O
</s>
<s>
Kinosearch	B-Language
–	O
a	O
search	B-Application
engine	I-Application
written	O
in	O
Perl	B-Language
and	O
C	B-Language
and	O
a	O
loose	O
port	O
of	O
Lucene	B-Language
.	O
</s>
<s>
The	O
Socialtext	O
wiki	O
software	O
uses	O
this	O
search	B-Application
engine	I-Application
,	O
and	O
so	O
does	O
the	O
MojoMojo	B-Language
wiki	O
.	O
</s>
