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MathGroup Archive 2006

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How to set AccuracyGoal and PrecisionGoal?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg70725] How to set AccuracyGoal and PrecisionGoal?
  • From: "Peng Yu" <pengyu.ut at gmail.com>
  • Date: Tue, 24 Oct 2006 02:24:53 -0400 (EDT)

Hi,

I got the following warning message when I use NonlinearRegress. Could
you please let me know what I should do if I see this kind of
warnings?

FindMinimum::lstol:
   The line search decreased the step size to within tolerance specified by
     AccuracyGoal and PrecisionGoal but was unable to find a sufficient
     decrease in the function.  You may need more than MachinePrecision
     digits of working precision to meet these tolerances.

Thanks,
Peng


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