BP算法是应用最广泛的神经网络算法，常用于预测，得到了很好的效果-BP algorithm is the most widely used neural network algorithm, commonly used in forecasting, we get good results

MATLAB语言编写的一个水质分析的程序，应用BP神经网络思想对水质进行分类。-A water quality analysis MATLAB language program, BP neural network to classify the water quality of thought.