预报误差法参数辨识-松弛的思想，匹配追踪和正交匹配追踪，从先验概率中采样，计算权重，最大似然（ML）准则和最大后验概率（MAP）准则，采用的是脉冲对消法，数学方法是部分子空间法。- Prediction Error Method for Parameter Identification- the idea of relaxation, Matching Pursuit and orthogonal matching pursuit, Sampling　a priori probability, calculate the weight, Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, It uses a pulse of consumer law, Mathematics is part of the subspace.