probml / pml2-book

Probabilistic Machine Learning: Advanced Topics
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Typo in Section 3.5.2.3, pg.105, version 2023-08-15 #282

Closed Igodlab closed 4 months ago

Igodlab commented 1 year ago

There is a typo in the exponent of the std in the FIM for the univariate Gaussian in eq. (3.2.34), the bottom-right element of the matrix should be: 2/σ^4 rather than 2/σ^2. See [1].

Also, the determinant right after this equation should be proportional to σ^(-3) rather than σ^2. See [2].

The corrected terms in LaTex are: [1] $2/\sigma^4$ [2] $\sqrt{\det(\mathbf{F}(\boldsymbol{\theta}))}=\frac{\sqrt{2}}{\sigma^3}$

murphyk commented 4 months ago

actually I think we are both wrong. I think it should be this (assuming 3.62 is correct)

Screenshot 2024-06-26 at 5 53 03 PM