<s>
In	O
statistics	O
,	O
kernel	B-General_Concept
Fisher	I-General_Concept
discriminant	I-General_Concept
analysis	I-General_Concept
(	O
KFD	O
)	O
,	O
also	O
known	O
as	O
generalized	O
discriminant	B-General_Concept
analysis	I-General_Concept
and	O
kernel	O
discriminant	B-General_Concept
analysis	I-General_Concept
,	O
is	O
a	O
kernelized	O
version	O
of	O
linear	B-General_Concept
discriminant	I-General_Concept
analysis	I-General_Concept
(	O
LDA	O
)	O
.	O
</s>
<s>
The	O
goal	O
of	O
linear	B-General_Concept
discriminant	I-General_Concept
analysis	I-General_Concept
is	O
to	O
give	O
a	O
large	O
separation	O
of	O
the	O
class	O
means	O
while	O
also	O
keeping	O
the	O
in-class	O
variance	O
small	O
.	O
</s>
<s>
Kernel	O
discriminant	B-General_Concept
analysis	I-General_Concept
has	O
been	O
used	O
in	O
a	O
variety	O
of	O
applications	O
.	O
</s>
