Fig. 2
The structure of a hierarchical RNN with 2 context variables, 5 genes and 3 neurons. Each neuron has only one outgoing connection. For example, N e u r o n 2 has three incoming connections x 1,x 2,x 5 at time t with corresponding weights w 2,1,w 2,2,w 2,5 and an outgoing connection to context node x 1 at time t+1. Context nodes, regulatory genes and the target gene are shown by broken, highlighted and double-line ovals respectively