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MathGroup Archive 2007

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Stalled at a point

  • To: mathgroup at smc.vnet.net
  • Subject: [mg75184] Stalled at a point
  • From: "Fulya Bağcı" <fulyabagci at gmail.com>
  • Date: Fri, 20 Apr 2007 00:30:48 -0400 (EDT)

Hello everyone,

I want to fit data to a function and find two parameters beta and beam
radius.I use NonlinearRegress for this. But it gives this error after 10
iterations:
The step size in the search has become less than the tolerance prescribed by
the PrecisionGoal option, but the gradient is larger than the tolerance
specified by the AccuracyGoal option. There is a possibility that the method
has stalled at a point which is not a local minimum.
What do I have to do ?
Any help is greatfully appreciated.
Thank you,

Fulya



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