Minimizing the coding cost
	• Pick hidden configurations using a Boltzmann distribution in their energies – This is exactly the posterior distribution over configurations given the datavector • Minimize the expected energy of the chosen configurations. – Change the parameters to minimize the energies of configurations weighted by their probability of being picked. • Don’t worry about the changes in the free energy caused by changes in the posterior distribution. – We chose the distribution to minimize free energy. – So small changes in the distribution have no effect on the free energy!