[Depth Belief network] [Boltzmann machine] DBN (Deep belief Network) RBM (Restricted Boltzmann machine) principle explained

The derivation of the Boltzmann machine and the two-value RBM, this part of the program is simple but the theory is not very good to say, involving a lot of random process and probability of knowledge. Bengio that article is actually very detailed, but he is from the point of view of free energy, physical significance is very clear but the derivation process is not as clear as some information on the Internet, I even try to integrate them a bit.

[Depth Belief network] [Boltzmann machine] DBN (Deep belief Network) RBM (Restricted Boltzmann machine) principle explained