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2017-08-25 本文已影响0人 ericsunn

chapter 2

two different interpretations of probability.

Frequentist interpretation
Bayesian interpretation

kl divergence和信息增益一个概念。

JS divergence is a symmetrized and smoothed version of the Kullback–Leibler divergence

02: $C_n^k=\frac{n(n-1)\ldots(n-k+1)}{k!}$
03: $\begin{align}\sqrt{37}&=\sqrt{\frac{73^2-1}{12^2}}\&=\sqrt{\frac{73^2}{12^2}\cdot\frac{73^2-1}{73^2}}\&=\sqrt{\frac{73^2}{12^2}}\sqrt{\frac{73^2-1}{73^2}}\&=\frac{73}{12}\sqrt{1-\frac{1}{73^2}}\&\approx\frac{73}{12}\left(1-\frac{1}{2\cdot73^2}\right)\end{align}$

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chapter 2

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