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Re: Fitting table model

  • To: mathgroup at smc.vnet.net
  • Subject: [mg40653] Re: [mg40611] Fitting table model
  • From: Sseziwa Mukasa <mukasa at jeol.com>
  • Date: Sat, 12 Apr 2003 03:10:49 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

On Friday, April 11, 2003, at 02:01 AM, Mazin M. wrote:

> Dear mathgroup.
>
> The function NonlinearFit[data,model,variables, parameters] work with
> "model" in a form of analytical function(s). Who can advice me the
> package where the "model" is in a form of table function (pairs of
> {xi, yi})?
>

If the derivative of you model with respect to the parameters is 
defined at all points use FindMinimum to minimize

Sum[(yi-f[xi,pi])^2,{i}]

where pi are the parameters and f[xi,pi] is the model.  If the 
derivative is a problem use NumericalMath`NMinimize on the above 
function.

Regards,

Ssezi



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