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平 均 条 件 熵 H( X / Y)<br />
H( X / Y = y ) =− px ( / y )log [ px ( / y )]<br />
j= 1 i=<br />
1<br />
j= 1 i=<br />
1<br />
j i k 2 i k<br />
i=<br />
1<br />
m<br />
H( X / Y) = H( X / Y = y ) p( y )<br />
=−<br />
=−<br />
m<br />
m<br />
n<br />
∑∑<br />
n<br />
∑∑<br />
∑<br />
j=<br />
1<br />
n<br />
∑<br />
px ( / y) py ( )log [ px ( / y)]<br />
i k k 2 i k<br />
px ( , y)log [ px ( / y)]<br />
i k 2 i k<br />
j<br />
k
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