The restricted Boltzmann machine is described by a Boltzmann distribution
Prbm(x,h,Θ)=1Z(Θ)exp−(E(x,h,Θ)),where Z is the normalization constant or partition function discussed earlier and defined as
Z(Θ)=∫∫exp−E(x,h,Θ)dxdh.It is common to set the temperature T to one. It is omitted in the equations above. The energy is thus a dimensionless function.