说明：  人工神经网络（Artificial Neural Networks，简写为ANNs）也简称为神经网络（NNs）或称作连接模型（Connection Model），它是一种模仿动物神经网络行为特征，进行分布式并行信息处理的算法数学模型。这种网络依靠系统的复杂程度，通过调整内部大量节点之间相互连接的关系，从而达到处理信息的目的。BP_nature1为离线程序，BP_nature2为在线调试程序。
( Artificial Neural Network (Artificial Neural Networks, abbreviated as ANNs) also referred to as neural networks (NNs) or known connection model (Connection Model), which is a neural network to mimic animal behavior characteristics of distributed parallel information processing algorithms mathematics model. This network relies on the complexity of the system, connected to each other by adjusting the relationship between the internal large number of nodes, so as to achieve the purpose of processing information. BP_nature1 offline program, BP_nature2 online debugger.)