<s>
In	O
statistics	O
,	O
the	O
order	B-General_Concept
of	I-General_Concept
a	I-General_Concept
kernel	I-General_Concept
is	O
the	O
degree	O
of	O
the	O
first	O
non-zero	O
moment	O
of	O
a	O
kernel	O
.	O
</s>
<s>
The	O
literature	O
knows	O
two	O
major	O
definitions	O
of	O
the	O
order	B-General_Concept
of	I-General_Concept
a	I-General_Concept
kernel	I-General_Concept
:	O
</s>
