Hello.
Constructors of classes in the "o.a.c.m.fitting" are instantiated using
an (abstract) "MultivariateVectorOptimizer". The only concrete
implementations of this class are
* LevenbergMarquardtOptimizer
* GaussNewtonOptimizer
[I.e. the API suggests that the Jacobian is not necessary for
some optimizers but no such (vector) optimizer exists currently.
Anyways the Jacobian is computed automatically (in inner class
"CurveFitter.TheoreticalValuesFunction") so that an optimizer
without derivatives is never necessary...]
Observing that
1. almost all the unit tests for the fitters use an instance of
"LevenbergMarquardtOptimizer",
2. some comments in the "GaussNewtonOptimizerTest" unit test class
makes
one wonder when "GaussNewtonOptimizer" should actually be preferred
over "LevenbergMarquardtOptimizer",
I would propose to deprecate the non-default constructors in all fitter
classes (and let the fitting be transparently performed with an
instance
of "LevenbergMarquardtOptimizer").
Any objection?
Regards,
Gilles
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