A model of digit recognition
The top two layers form an
associative memory  whose
energy landscape models the low
dimensional manifolds of the
The energy valleys have names
2000 top-level neurons
10 label
500 neurons
The model learns to generate
combinations of labels and images.
To perform recognition we start with a
neutral state of the label units and do
an up-pass from the image followed
by a few iterations of the top-level
associative memory.
500 neurons
28 x 28