Recent content by james4321

Thank you Pythagorean for you reply. "Use a genetic algorithm method to find the optimal Levenberg parameters?" Unfortunately I have no expertise in genetic algorithms. I wish I know how to use these algorithms as they are very useful. Do you recommend any code or package that can do this...

Thank you Dr Transport for you reply. "your choice of fitting parameters in the Levenberg-Marquardt routine needs to be changed" I do this but some data are very difficult to fit even with this.

Thank you Dr Transport and Pythagorean for you reply. "your choice of fitting parameters in the Levenberg-Marquardt routine needs to be changed" I do this but some data are very difficult to fit even with this. "Use a genetic algorithm method to find the optimal Levenberg parameters?"...

I am looking for a reliable curve fitting routine (preferrably in C or C++). Currently I use Levenberg-Marquardt routine from numerical recipes but it fails frequently. Your adivce will be appreciated.

I have a definite integral defined by \begin{equation}T\left(G\left(g\right)\right)=\int_{g_{1}}^{g_{2}}G(g)\mathrm{d}g\end{equation} where G is a continuous function of a variable g, and g_{1} and g_{2} are known numbers. I want to minimize T\left(G\left(g\right)\right), that is I want to...