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代码说明：

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(Least-squares algorithm for the auxiliary variables. uy2 for data containing noise, n = 2, the noise model n = 2. Output data for the left and right for the input data. k = 2,3,4,5, etc.)