热电偶分度表数据处理-----BP神经网络处理----函数逼近-Thermocouple indexing table data processing----- BP neural network processing---- function approximation

BP神经网络分类iris数据，对函数y=sqrt（x）的逼近，里面包含了iris数据。-BP neural network classification of iris data, the function y=sqrt (x) approximation, which contains the iris data.