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S Jan 16, 2019 at 0:01 history suggested Hans CC BY-SA 4.0
Use the LaTeX script.
Jan 15, 2019 at 22:29 review Suggested edits
S Jan 16, 2019 at 0:01
Jan 15, 2019 at 19:47 comment added Will Orrick @Hans It's been a while since I thought about this, but, yes, $P$ does represent the probability. The distinction is that I am speaking of the information content of an event rather than of a random variable. Perhaps it would have been clearer if I had stuck with the term "pointwise mutual information", which I used in my comment to Kenny Easwaran's answer, instead of dropping the adjective "pointwise", but many books do the same. The information content of a single event is sometimes referred to as "self information".
Jan 15, 2019 at 8:22 comment added Hans The notation is confusing and looks wrong. For example, you say $I(E) = −\log P(E)$. What is $P$ the probability? The conventional definition of entropy $I(X)=-\sum_{x\in X(\Omega)} P(x)\ln P(x)$ for a random variable $X$. How does your definition reconcile with the conventional one?
Oct 29, 2009 at 0:49 history edited Will Orrick CC BY-SA 2.5
Cover and Thomas reference
Oct 24, 2009 at 15:28 history answered Will Orrick CC BY-SA 2.5