The parameter estimation problem to the invertible vector moving average (ma) model essentially is a matrix spectralfactorization problem.
可逆的向量滑动平均(MA)模型参数估计问题本质上是一个矩阵谱分解问题。
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It is known by correlation with drilling data that the spectralfactorization can describe the boundaries of strong reflection and weak reflection in different frequencies.