Definition 1 (Inverse matrix): Given a square matrix A∈Rn×n, it's inverse matrix is the matrix C that when either left or right multiplied by A ... ... <看更多>

The invertible matrix theorem gives a rather long list of necessary and sufficient conditions for a matrix to be an invertible matrix. ... <看更多>

Suppose in the M-step of EM algorithm, the denominator of some parameters are matrix and they are non-invertible, we would use pseudo inverse ... ... <看更多>