<s>
Defuzzification	B-General_Concept
is	O
the	O
process	O
of	O
producing	O
a	O
quantifiable	O
result	O
in	O
crisp	O
logic	O
,	O
given	O
fuzzy	O
sets	O
and	O
corresponding	O
membership	O
degrees	O
.	O
</s>
<s>
It	O
is	O
typically	O
needed	O
in	O
fuzzy	B-General_Concept
control	I-General_Concept
systems	I-General_Concept
.	O
</s>
<s>
Defuzzification	B-General_Concept
is	O
interpreting	O
the	O
membership	O
degrees	O
of	O
the	O
fuzzy	O
sets	O
into	O
a	O
specific	O
decision	O
or	O
real	O
value	O
.	O
</s>
<s>
The	O
simplest	O
but	O
least	O
useful	O
defuzzification	B-General_Concept
method	O
is	O
to	O
choose	O
the	O
set	O
with	O
the	O
highest	O
membership	O
,	O
in	O
this	O
case	O
,	O
"	O
Increase	O
Pressure	O
"	O
since	O
it	O
has	O
a	O
72%	O
membership	O
,	O
and	O
ignore	O
the	O
others	O
,	O
and	O
convert	O
this	O
72%	O
to	O
some	O
number	O
.	O
</s>
<s>
A	O
common	O
and	O
useful	O
defuzzification	B-General_Concept
technique	O
is	O
center	O
of	O
gravity	O
.	O
</s>
<s>
The	O
first	O
step	O
of	O
defuzzification	B-General_Concept
typically	O
"	O
chops	O
off	O
"	O
parts	O
of	O
the	O
graphs	O
to	O
form	O
trapezoids	O
(	O
or	O
other	O
shapes	O
if	O
the	O
initial	O
shapes	O
were	O
not	O
triangles	O
)	O
.	O
</s>
<s>
There	O
are	O
many	O
different	O
methods	O
of	O
defuzzification	B-General_Concept
available	O
,	O
including	O
the	O
following	O
:	O
</s>
