Fig. 1
From: Efficient representation of quantum many-body states with deep neural networks
Illustration of Boltzmann machine neural networks. a Restricted Boltzmann machine (RBM) which has only one hidden layer and no intra-layer connections. b Deep Boltzmann machine (DBM) which has at least two hidden layers and no intra-layer connections. General DBMs are equivalent to DBMs with two hidden layers after rearrangement of odd and even layers. c Fully connected Boltzmann machine which has intra-layer connections. d Reduction of fully connected Boltzmann machine to DBMs with two hidden layers
