Fig. 3: Theoretical implementation of a synaptic layer using crossbar arrays.
From: Committee machines—a universal method to deal with non-idealities in memristor-based neural networks

It was assumed that a synaptic layer of shape 785 × 25 would be implemented using seven crossbars of shape 128 × 64. a Mapping the first subset of weights onto one of the seven crossbars. Positive weights and negative weights are mapped onto memristors in different bit lines. b Heatmap of average changes in output currents due to line resistance (in all seven Ta/HfO2 crossbars). For this particular simulation, it was assumed that Ta/HfO2 devices can be programmed perfectly.