ermongroup / cs228-notes

Course notes for CS228: Probabilistic Graphical Models.
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Typo: At the end of the variational auto-encoder section, the variable x is erroneously used instead of z #179

Closed chausies closed 5 years ago

chausies commented 5 years ago

At the end of the Variational Auto-encoder section (https://ermongroup.github.io/cs228-notes/extras/vae/), the following is written:

A variational auto-encoder uses the AEVB algorithm to learn a specific model p using a particular encoder q. The model p is parametrized as p(x∣z)=N(x;μ(z),diag(σ(x))^2) p(z)=N(z;0,I), where μ(z),σ(z) are parametrized by a neural network (typically, two dense hidden layers of 500 units each).

For p(x∣z), you erroneously wrote σ(x) instead of σ(z) for the covariance matrix, which is probably a typo.

chrisyeh96 commented 5 years ago

Good catch. This has been fixed in commit 371323.