3. Effects of Network Connectivity

Efficient methods to train RBMs with fixed, sparse connectivity
Problem 3.1.
[Jason Rolfe] What are the most efficient learning algorithms for training sparsely connected RBMs? 
How do RBMs with quantum effects differ from classical RBMs?
Problem 3.2.
How are the following models different from classical RBMs:
1) RBMs with sparse connectivity.
2) RBMs with sparse connectivity, and with quantum effects.
3) RBMs with sparse connectivity, and with quantum effects and quantum training algorithm. 
Given a fixed connectivity structure, how many inference functions can an RBM model compute?
Problem 3.3.
How many inference functions can an RBM model compute, constrained by a fixed connectivity structure? 
Given two RBMs with the same number of units but different connectivities, how much do these statistical models overlap?
Problem 3.4.
How to quantify function approximation given a network topology? In other words, how to measure the proximity between two functions when each are computed by separate networks? Then, can one use this measure to quantify the effects of altering a networkâ€™s connectivity structure?
Cite this as: AimPL: Boltzmann Machines, available at http://aimpl.org/boltzmann.