<s>
A	O
radix	B-Application
heap	I-Application
is	O
a	O
data	B-General_Concept
structure	I-General_Concept
for	O
realizing	O
the	O
operations	O
of	O
a	O
monotone	B-Application
priority	I-Application
queue	I-Application
.	O
</s>
<s>
The	O
data	B-General_Concept
structure	I-General_Concept
consists	O
mainly	O
of	O
a	O
series	O
of	O
buckets	O
,	O
the	O
size	O
of	O
which	O
increases	O
exponentially	O
.	O
</s>
<s>
The	O
three	O
most	O
important	O
fields	B-Application
are	O
:	O
</s>
<s>
The	O
above	O
diagram	O
shows	O
the	O
data	B-General_Concept
structure	I-General_Concept
.	O
</s>
