factor.py 文件源码

def joint_parameters(self):
        mean = np.concatenate((np.zeros(self.L), self.mux))
        cov = np.row_stack((
            np.column_stack((np.eye(self.L), self.W.T)),
            np.column_stack((self.W, np.dot(self.W, self.W.T) + self.Psi))
        ))
        return mean, cov