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Levenberg-Marquardt algorithm

Hi

I tried to use the alglib Levenberg-Marquardt algorithm - Nonlinear least squares fitting: Hessian-based or Hessian-free and it works well.

http://www.alglib.net/interpolation/leastsquares.php#header1

I need to solve a equation where it gives the best output value C which makes the slope close to 1. It does works however i need to put a constraint to restrict the C value ratio 1 > value > 0 . And i don't know where i can put this constraint in the code. Please help!!!

Thanks in advance
Nancy
Jun 28 '10 #1
0 2138

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