Understanding ADVI approx.sample(n)

[junpenglao]

Yes, that is conceptually what happen, although the exact sampling happens in the graph.

@Nadheesh

Moreover, if we want to use intermediate mean and std values using the tracker and then compute the PPC for those values, how can I achieve that?

You can set the parameters by doing .set_value, see this post for more details: Saving ADVI results and reloading - #6 by junpenglao