旋转机械二维全息谱计算的实用例程，包括最小二乘法、SVM、神经网络、1_k近邻法,最小均方误差等算法的MSE的计算。- Rotating Machinery dimensional hologram of practical spectrum calculation routines, Including the least squares method, the SVM, neural networks, 1 _k neighbor method, Minimum mean square er