MATLAB: NARx Neural Network inputs

neural networkneural networks

I have a Narx network with 6 external inputs. These have a 1:2 delay on them. I also have a feedback loop for multi-step ahead prediction with a 1:24 delay on them. Does this mean I have 12 external inputs (x1(t),x1(t-1)…x6(t-1)) and 24 'feedback' neurons (y(t-1),y(t-2)…y(t-24)) totaling 36 input neurons?
delay=24;
inputDelays = 1:2;
feedbackDelays = 1:delay;
net = narxnet(inputDelays,feedbackDelays,hiddenLayerSize);
Thanks

Best Answer

Yes.
However, input nodes are not neurons.
Hidden and output nodes are neurons often associated with a nonlinear transfer function like tansig (i.e., tanh) or logsig.
Hope this helps.
Greg
Related Question