<s>
Tanagra	B-Language
supports	O
several	O
standard	O
data	B-Application
mining	I-Application
tasks	O
such	O
as	O
:	O
Visualization	O
,	O
Descriptive	O
statistics	O
,	O
Instance	O
selection	O
,	O
feature	B-General_Concept
selection	I-General_Concept
,	O
feature	O
construction	O
,	O
regression	O
,	O
factor	O
analysis	O
,	O
clustering	B-Algorithm
,	O
classification	B-General_Concept
and	O
association	B-Algorithm
rule	I-Algorithm
learning	I-Algorithm
.	O
</s>
<s>
Tanagra	B-Language
is	O
an	O
academic	O
project	O
.	O
</s>
<s>
Tanagra	B-Language
is	O
frequently	O
used	O
in	O
real	O
studies	O
and	O
in	O
software	O
comparison	O
papers	O
.	O
</s>
<s>
The	O
development	O
of	O
Tanagra	B-Language
was	O
started	O
in	O
June	O
2003	O
.	O
</s>
<s>
Tanagra	B-Language
is	O
the	O
successor	O
of	O
Sipina	O
,	O
another	O
free	O
data	B-Application
mining	I-Application
tool	O
which	O
is	O
intended	O
only	O
for	O
supervised	O
learning	O
tasks	O
(	O
classification	B-General_Concept
)	O
,	O
especially	O
the	O
interactive	O
and	O
visual	O
construction	O
of	O
decision	O
trees	O
.	O
</s>
<s>
Tanagra	B-Language
is	O
an	O
"	O
open	B-Application
source	I-Application
project	O
"	O
as	O
every	O
researcher	O
can	O
access	O
the	O
source	O
code	O
and	O
add	O
their	O
own	O
algorithms	O
,	O
as	O
long	O
as	O
they	O
agree	O
and	O
conform	O
to	O
the	O
software	O
distribution	O
license	O
.	O
</s>
<s>
The	O
main	O
purpose	O
of	O
the	O
Tanagra	B-Language
project	O
is	O
to	O
give	O
researchers	O
and	O
students	O
a	O
user-friendly	O
data	B-Application
mining	I-Application
software	O
,	O
conforming	O
to	O
the	O
present	O
norms	O
of	O
the	O
software	O
development	O
in	O
this	O
domain	O
(	O
especially	O
in	O
the	O
design	O
of	O
its	O
GUI	O
and	O
the	O
way	O
to	O
use	O
it	O
)	O
,	O
and	O
allowing	O
the	O
analyzation	O
of	O
either	O
real	O
or	O
synthetic	O
data	O
.	O
</s>
<s>
They	O
describe	O
the	O
statistical	O
and	O
machine	O
learning	O
methods	O
and	O
their	O
implementation	O
with	O
Tanagra	B-Language
on	O
real	O
case	O
studies	O
.	O
</s>
<s>
The	O
use	O
of	O
other	O
free	O
data	B-Application
mining	I-Application
tools	O
on	O
the	O
same	O
problems	O
is	O
also	O
widely	O
described	O
.	O
</s>
<s>
Tanagra	B-Language
works	O
similarly	O
to	O
current	O
data	B-Application
mining	I-Application
tools	O
.	O
</s>
<s>
The	O
user	O
can	O
design	O
visually	O
a	O
data	B-Application
mining	I-Application
process	O
in	O
a	O
diagram	O
.	O
</s>
<s>
But	O
unlike	O
the	O
majority	O
of	O
tools	O
which	O
are	O
based	O
on	O
the	O
workflow	O
paradigm	O
,	O
Tanagra	B-Language
is	O
very	O
simplified	O
.	O
</s>
<s>
Tanagra	B-Language
makes	O
a	O
good	O
compromise	O
between	O
statistical	O
approaches	O
(	O
e.g.	O
</s>
<s>
factor	O
analysis	O
,	O
correspondence	O
analysis	O
,	O
cluster	B-Algorithm
analysis	I-Algorithm
,	O
regression	O
)	O
and	O
machine	O
learning	O
techniques	O
(	O
e.g.	O
</s>
