The GLS Transformation Matrix and a Semi-recursive Estimator for the Linear Regression Model with ARMA Errors

The GLS Transformation Matrix and a Semi-recursive Estimator for the Linear Regression Model with ARMA Errors
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具有 ARMA 误差的线性回归模型的 GLS 变换矩阵和半递归估计器

DOI:
10.1017/s0266466600010756
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发表时间:
1992
期刊:
影响因子:
0.8
通讯作者:
Victoria Zinde
Victoria Zinde
中科院分区:
经济学3区
文献类型:
--
作者:
John W. Galbraith;Victoria Zinde

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对于一般平稳阿尔马(p,q)过程u,我们导出了正交化矩阵R的精确形式,使得R′R = E(uu′),其中E(uu′)是u的协方差矩阵,推广了AR(p)过程的已知公式.在具有阿尔马(p,q)误差过程的线性回归模型中,通过R变换数据产生具有白噪声误差的回归模型。我们还考虑了半递归(递归的模型参数,但不是误差过程的参数)估计的应用。
For a general stationary ARMA(p,q) process u we derive the exact form of the orthogonalizing matrix R such that R′R = Σ−1, where Σ = E(uu′) is the covariance matrix of u, generalizing the known formulae for AR(p) processes. In a linear regression model with an ARMA(p,q) error process, transforming the data by R yields a regression model with white-noise errors. We also consider an application to semi-recursive (being recursive for the model parameters, but not for the parameters of the error process) estimation.