<s>
Boolean	B-General_Concept
analysis	I-General_Concept
was	O
introduced	O
by	O
Flament	O
(	O
1976	O
)	O
.	O
</s>
<s>
The	O
goal	O
of	O
a	O
Boolean	B-General_Concept
analysis	I-General_Concept
is	O
to	O
detect	O
deterministic	O
dependencies	O
between	O
the	O
items	O
of	O
a	O
questionnaire	O
or	O
similar	O
data-structures	O
in	O
observed	O
response	O
patterns	O
.	O
</s>
<s>
Since	O
the	O
basic	O
work	O
of	O
Flament	O
(	O
1976	O
)	O
a	O
number	O
of	O
different	O
methods	O
for	O
Boolean	B-General_Concept
analysis	I-General_Concept
have	O
been	O
developed	O
.	O
</s>
<s>
Boolean	B-General_Concept
analysis	I-General_Concept
is	O
an	O
explorative	B-General_Concept
method	I-General_Concept
to	O
detect	O
deterministic	O
dependencies	O
between	O
items	O
.	O
</s>
<s>
Methods	O
of	O
Boolean	B-General_Concept
analysis	I-General_Concept
do	O
not	O
assume	O
that	O
the	O
detected	O
dependencies	O
describe	O
the	O
data	O
completely	O
.	O
</s>
<s>
Thus	O
,	O
a	O
Boolean	B-General_Concept
analysis	I-General_Concept
tries	O
to	O
detect	O
interesting	O
deterministic	O
structures	O
in	O
the	O
data	O
,	O
but	O
has	O
not	O
the	O
goal	O
to	O
uncover	O
all	O
structural	O
aspects	O
in	O
the	O
data	O
set	O
.	O
</s>
<s>
Therefore	O
,	O
it	O
makes	O
sense	O
to	O
use	O
other	O
methods	O
,	O
like	O
for	O
example	O
latent	O
class	O
analysis	O
,	O
together	O
with	O
a	O
Boolean	B-General_Concept
analysis	I-General_Concept
.	O
</s>
<s>
Bart	O
and	O
Airasian	O
(	O
1974	O
)	O
use	O
Boolean	B-General_Concept
analysis	I-General_Concept
to	O
establish	O
logical	O
implications	O
on	O
a	O
set	O
of	O
Piagetian	O
tasks	O
.	O
</s>
<s>
There	O
are	O
several	O
attempts	O
to	O
use	O
boolean	B-General_Concept
analysis	I-General_Concept
,	O
especially	O
item	O
tree	O
analysis	O
to	O
construct	O
knowledge	O
spaces	O
from	O
data	O
.	O
</s>
<s>
Methods	O
of	O
Boolean	B-General_Concept
analysis	I-General_Concept
are	O
used	O
in	O
a	O
number	O
of	O
social	O
science	O
studies	O
to	O
get	O
insight	O
into	O
the	O
structure	O
of	O
dichotomous	O
data	O
.	O
</s>
<s>
Bart	O
and	O
Krus	O
(	O
1973	O
)	O
use	O
,	O
for	O
example	O
,	O
Boolean	B-General_Concept
analysis	I-General_Concept
to	O
establish	O
a	O
hierarchical	O
order	O
on	O
items	O
that	O
describe	O
socially	O
unaccepted	O
behavior	O
.	O
</s>
<s>
Janssens	O
(	O
1999	O
)	O
used	O
a	O
method	O
of	O
Boolean	B-General_Concept
analysis	I-General_Concept
to	O
investigate	O
the	O
integration	O
process	O
of	O
minorities	O
into	O
the	O
value	O
system	O
of	O
the	O
dominant	O
culture	O
.	O
</s>
<s>
Boolean	B-General_Concept
analysis	I-General_Concept
has	O
some	O
relations	O
to	O
other	O
research	O
areas	O
.	O
</s>
<s>
There	O
is	O
a	O
close	O
connection	O
between	O
Boolean	B-General_Concept
analysis	I-General_Concept
and	O
knowledge	O
spaces	O
.	O
</s>
<s>
Methods	O
of	O
Boolean	B-General_Concept
analysis	I-General_Concept
can	O
be	O
used	O
to	O
construct	O
a	O
knowledge	O
structure	O
from	O
data	O
(	O
for	O
example	O
,	O
Theuns	O
,	O
1998	O
or	O
Schrepp	O
,	O
1999	O
)	O
.	O
</s>
<s>
The	O
main	O
difference	O
between	O
both	O
research	O
areas	O
is	O
that	O
Boolean	B-General_Concept
analysis	I-General_Concept
concentrates	O
on	O
the	O
extraction	O
of	O
structures	O
from	O
data	O
while	O
knowledge	O
space	O
theory	O
focus	O
on	O
the	O
structural	O
properties	O
of	O
the	O
relation	O
between	O
a	O
knowledge	O
structure	O
and	O
the	O
logical	O
formulas	O
which	O
describe	O
it	O
.	O
</s>
<s>
Closely	O
related	O
to	O
knowledge	O
space	O
theory	O
is	O
formal	B-Algorithm
concept	I-Algorithm
analysis	I-Algorithm
(	O
Ganter	O
and	O
Wille	O
,	O
1996	O
)	O
.	O
</s>
<s>
Formal	B-Algorithm
concept	I-Algorithm
analysis	I-Algorithm
offers	O
very	O
effective	O
ways	O
to	O
construct	O
such	O
dependencies	O
from	O
data	O
,	O
with	O
a	O
focus	O
on	O
if-then	O
expressions	O
(	O
"	O
implications	O
"	O
)	O
.	O
</s>
<s>
Another	O
related	O
field	O
is	O
data	B-Application
mining	I-Application
.	O
</s>
<s>
Data	B-Application
mining	I-Application
deals	O
with	O
the	O
extraction	O
of	O
knowledge	O
from	O
large	O
databases	O
.	O
</s>
<s>
Several	O
data	B-Application
mining	I-Application
algorithms	O
extract	O
dependencies	O
of	O
the	O
form	O
j	O
→	O
i	O
(	O
called	O
association	B-Algorithm
rules	I-Algorithm
)	O
from	O
the	O
database	O
.	O
</s>
<s>
The	O
main	O
difference	O
between	O
Boolean	B-General_Concept
analysis	I-General_Concept
and	O
the	O
extraction	O
of	O
association	B-Algorithm
rules	I-Algorithm
in	O
data	B-Application
mining	I-Application
is	O
the	O
interpretation	O
of	O
the	O
extracted	O
implications	O
.	O
</s>
<s>
The	O
goal	O
of	O
a	O
Boolean	B-General_Concept
analysis	I-General_Concept
is	O
to	O
extract	O
implications	O
from	O
the	O
data	O
which	O
are	O
(	O
with	O
the	O
exception	O
of	O
random	O
errors	O
in	O
the	O
response	O
behavior	O
)	O
true	O
for	O
all	O
rows	O
in	O
the	O
data	O
set	O
.	O
</s>
<s>
For	O
data	B-Application
mining	I-Application
applications	O
it	O
is	O
sufficient	O
to	O
detect	O
implications	O
which	O
fulfill	O
a	O
predefined	O
level	O
of	O
accuracy	O
.	O
</s>
