Hi,

after I finish the viva, I will send a final copy of it to you.

Yes, I still waiting.

Maybe a good explanation of the LM is given in Numerical Recipes in C p.684 or at Winipedia.

The question here what is the damping value?

It is just a scaling parameter to switch over to the method of gradient decent for a large value or, if this value is small, to the Gauß-Newton method. As seen at page 684 in NR in C, the damping parameter is a user-defined value. If the first approximation is far away from the minimum, you will start with a large value. If you can start with an appropriate approximation, you don't need a (large) damping parameter (choose a very small one) and switch on the powerful GN-method.

regards
Micha

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