更改

In the case of jointly continuous random variables, the double sum is replaced by a double integral:

In the case of jointly continuous random variables, the double sum is replaced by a double integral:

在联合连续随机变量的情况下，二重和用二重积分代替:

在联合分布的随机变量为连续型的情况下，公式中的二重求和用二重积分代替:

[[文件:MI pic3.png|居中|缩略图]]

[[文件:MI pic3.png|居中|缩略图]]

If the log base 2 is used, the units of mutual information are bits.

If the log base 2 is used, the units of mutual information are bits.

== 动机 Motivation ==

== 动机 Motivation ==