Sunday, June 15, 2008

Mistake in question 5

As Zvika Brakerski pointed out to me, in the definition of Entropy (Ent) in question 5, g should be squared everywhere. That is, $\mathbf{Ent}(g)=\mathbf{E}_x[g^2(x)\ln(g^2(x)] - \mathbf{E}_x[g^2(x)] \mathbf{E}_x[\ln(g^2(x)]$. I'm writing this from a computer that doesn't support mathml fonts, so I can only hope the formula shows correctly on computers which do support it.

No comments: