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Re: Levenberg-Marquardt ?
Alastair McLean wrote: > > Has the Levenberg-Marquard method of non-linear least > squares minimisation been implemented as a Mathematica > function or package yet ? > This is implemented in FindMinimum. If the objective function is structurally a sum of squares, it is invoked automatically instead of the usual default method. You can also explicitly use the option Method->LevenbergMarquardt One common use of this is through the package Statistics`NonlinearFit` which uses this method to do a nonlinear data fit. Rob Knapp Wolfram Research