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- The arithmetic in ``
world'' is that of full
matrices which are
where n is number of parameters.
- In ``linear'' case (
linear in components of
,
quadratic in components), minimization
requires single solution of equations

- In ``nonlinear'' case (
nonlinear in
), one must
iteratively solve
.
- Note that one expands
up to linear term which gives a quadratic
approximations to
.
- Thus, need to calculate

- where ``value''

Geoffrey Fox, Northeast Parallel Architectures Center at Syracuse University, gcf@npac.syr.edu