实现三层神经网络,对于初学者帮助较大。但是讲解不是很全面，几乎没有。-The realization of three neural networks, for beginners to help more. But on the not very comprehensive, virtually non-existent.

对神经网络中使用最广泛的一种:bp神经网络采用vb语言来实现。-right neural network the most widely used one : bp neural networks vb language.

BP神经网络的非线性系统建模-非线性函数拟合-Nonlinear System Modeling BP neural network- a nonlinear function fitting