Minimizing the objective function is an iterative process
which requires solving the forward problem repeatedly with different parameter sets.
New parameter combinations are proposed and tried until no further significant improvement of
the fit can be obtained. Different stopping criteria apply depending on the
minimization algorithm selected.
Details about the stopping criteria can be found in the
iTOUGH2 user's guide and the
iTOUGH2 command reference.
Page updated: July 21, 1997