| 释义 |
irrelevance
偏离度,弥散度,不相关性
In information theory, the conditional entropy of the occurrence of specific messages at a message sink given the occurrences of specific messages at the message source connected to the message sink by a specified channel. If xi is the input message at the message source and yi the output message at the message sink, the irrelevance H(y
|x) is expressed by the formula: H(y
|x)=∑i=ni=1∑j=mj=1p(yj,xi)log1p(yj
|xi).
在信息论中,假定在通过特定信道与消息宿连接起来的消息源处,特定的诸消息已经出现 ,在消息宿处出现指定诸消息的条件熵。如果xi是消息源处的输入消息,yi是消息宿 处的输出消息,则偏离度用下式表示: H(y
|x)=∑i=ni=1∑j=mj=1p(yj,xi)log1p(yj
|xi)。 同prevarication, spread。 |