Conjugate gradient methods form a class of iterative algorithms that are highly effective for solving large‐scale unconstrained optimisation problems. They achieve efficiency by constructing search ...

The EM algorithm is a very popular and widely applicable algorithm for the computation of maximum likelihood estimates. Although its implementation is generally simple, the EM algorithm often exhibits ...

SIAM Journal on Numerical Analysis, Vol. 21, No. 2 (Apr., 1984), pp. 352-362 (11 pages) We characterize the class CG(s) of matrices A for which the linear system Ax = b can be solved by an s-term ...