人工神经网络(ANN)，简称神经网络，是一种模仿生物神经网络的结构和功能的数学模型或计算模型。将它在R语言中的两种格式应用于案例。-Artificial neural network (ANN), or neural network, is a mathematical model or a computational model that imitates the structure and function of biological neural networks. The two formats in the R language are applied to the case.