Hartley function
التعريفات والمعاني
== English ==
=== Etymology ===
Introduced by Ralph Hartley in 1928.
=== Proper noun ===
the Hartley function
(mathematics) A measure of uncertainty. If a sample from a finite set A uniformly at random is picked, the information revealed after the outcome is known is given by the Hartley function
H
0
(
A
)
:=
l
o
g
b
|
A
|
{\displaystyle H_{0}(A):=\mathrm {log} _{b}\vert A\vert }
, where
|
A
|
{\displaystyle \vert A\vert }
denotes the cardinality of A.