On the Inverse of a Patterned Covariance Matrix
讨论了模式化协方差矩阵的求逆问题，指出了一种相关矩阵的一般形式，并应用撕裂法进行求逆，对某些相关结构可大幅简化计算。
Abstract The inversion of a patterned covariance matrix is discussed. A general form of the correlation matrix is noted, and inversion by the method of tearing is applied. For certain correlation structures, the calculations are considerably simplified.