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. Author manuscript; available in PMC: 2021 May 19.
Published in final edited form as: IEEE Trans Radiat Plasma Med Sci. 2020 Oct 13;5(2):137–159. doi: 10.1109/trpms.2020.3030611

Fig. 1.

Fig. 1.

(a) Structure of the McCulloch and Pitts neuron model. xi stands for the input of the neuron, wi stands for the corresponding weight. θ means the bias which is related to decide whether this neuron should be activated or not. (b) Structure of the MLP. (c) Structure of the LeNet5 model, designed for character recognition.