System Of Equations, Generalized Linear Model, Linear Regression, Covariance Matrix, Kronecker Product.
X are occupied by 0 which is a matrix containing only zeros. The 0 matrix lying at row i and column m in X is of size [N x k_m]. The matrix X is called a block matrix as it is made up of “blocks”. Here, a block is used to refer to the matrices X_1, X_2,…,X_M and the 0 matrices. Similarly, matrices