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1 人工神经网络概论1.1 神经网络的基本概念神经网络虽然是一个高度非线性大规模并行处理系统,但构成神经网络的单个神经元却是一个简单的多输入、单输出的非线性处理单元。图1为神经元数学模型,图中 x_1(i=1,2…n)为神经元接收到的信息,w_ii(i=1,2…n)为相应的权重,θ为阀值,y 为神经元输出。
1 Introduction to Artificial Neural Network 1.1 Basic Concepts of Neural Network Although a highly nonlinear large-scale parallel processing system is a neural network, a single neuron that constitutes a neural network is a simple multi-input and single-output nonlinear processing unit. Figure 1 shows the mathematical model of neurons. In the figure, x_1 (i = 1,2 ... n) is the information received by the neuron. W_ii (i = 1,2 ... n) is the corresponding weight, θ is the threshold, y is Neuron output.