...,这种算法利用主元分析(PCA)来获取系统矩阵,避免了其他算法中的投影过程,因此该算法在闭环辨识和变量有误差(errors-in-variable)的情况下,辨识结果也是无偏的.
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但在实际的测量中，测量数据不可避免地会带来误差，该文在分析和总结了自变量有误差的情况下，用最小二乘法处理实验数据时的几种方法。
But there is always error in measuring. When the independent variable has error-several methods to process data by least square method are discussed in this paper.
因此在第二章，本人用半参数方法提出了协变量测量有误差时的中值回归模型，用它来估计寿命变量的中值。
In the second chapter, I propose semi-parametric estimate to get median regression models with the measured error margin and use it to estimate the mediant of survival data.
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