Mathematical Problems in Engineering / 2020 / Article / Fig 5

Research Article

System Identification of Neural Signal Transmission Based on Backpropagation Neural Network

Figure 5

The influence of number of layers and type of excitation functions on error of data fitting. (a) The double hidden layer network has an obviously better performance than the single hidden layer network. (b) The fitting performance of different combinations of excitation functions. l-p, l-t, t-t, and t-p present the different function groups of hidden layers (the former letter) and output layers (the latter letter), where l, p, and t, respectively, present logsig, purelin, and tansig functions.

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