中文说明：
此算法为最小二乘辅助变量法。uy2为含噪声数据，n=2,噪声模型n=2。左为输出数据，右为输入数据。k=2,3,4,5等等。
English Description：
This algorithm is the least squares auxiliary variable method. Uy2 is the data with noise, n = 2, noise model n = 2. The left is output data and the right is input data. K = 2,3,4,5, etc