神经网络感知器进行函数拟合，对每一段函数使用一个感知器分别进行训练拟合。在拟合时对于该段函数上的点(x,y)分别均匀选取该段函数上下两边的点作为输入样本对应+1，-1为教师-Perceptron neural network for function fitting for each function USES a perceptron training fitting respectively.In fitting for this function on the right point (x, y) uniform selection which function respectively on both sides of the up and down points as the input samples+ 1, 1 as teachers