For example, what are known as direct solvers solve problems with Gauss elimination. ... the user chooses the SOR-vector and SORU-vector algorithms for the pre and postsmoothers.

This example estimates the normal SSM of the mink-muskrat data using the EM algorithm. The mink-muskrat series are detrended. Refer to Harvey (1989) for details of this data set. Since this EM ...