Self-information
2015-08-08 15:08
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Self-information is a measure of the informatin content associated with an event in a probability space or with the value of a discrete random variable.
![](https://images0.cnblogs.com/blog2015/690490/201508/081504597688169.png)
This measure has also been called surprisal, as it represents the "surprise" of seeing the outcome (a highly improbable outcome is very surprising).
![](https://images0.cnblogs.com/blog2015/690490/201508/081504597688169.png)
This measure has also been called surprisal, as it represents the "surprise" of seeing the outcome (a highly improbable outcome is very surprising).
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