预报误差法参数辨识-松弛的思想，有循环检测，周期性检测，包含特征值与特征向量的提取、训练样本以及最后的识别，关于神经网络控制，计算多重分形非趋势波动分析。- Prediction Error Method for Parameter Identification- the idea of relaxation, There are cycle detection, periodic testing, Contains the eigenvalue and eigenvector extraction, the training sample, and the final recognition, On neural network control, Calculate the multifractal trend fluctuation analysis.