The generative model

• To generate data: 1. Get an equilibrium sample from the top-level RBM by performing alternating Gibbs sampling for a long time. 2. Perform a single top-down pass to get states for all the other layers.      The lower-level, bottom-up connections  are not part of the generative model. They are there to do fast approximate inference.

h3

h2

h1

data