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Problems with NonlinearFit

  • To: mathgroup at smc.vnet.net
  • Subject: [mg29578] Problems with NonlinearFit
  • From: "guan koay" <cg_koay at hotmail.com>
  • Date: Wed, 27 Jun 2001 05:12:14 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

hi there,

    I ran into some problems with NonlinearFit. Below are the data and error 
messages. Theoretically, the double sums should both go to infinity but 200 
term for each sum should be enough. The test below is only using 4 instead 
of 200 term for each sum. I would to understand more about the error 
messages.
Helps will be very much appreciated and I would like to thank you all in 
advance. Thank you.

Attached here with the notebook(I have hard time saving it as html or text).


Cheng Guan Koay
cg_koay at berea.edu
cg_koay at hotmail.com
_________________________________________________________________


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    \(<< Statistics`NonlinearFit`\)], "Input"],

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    RowBox[{"\[IndentingNewLine]",
      StyleBox[\(FinalData3 := {{0, 1\/13488}, {1, 0}, {2, 1\/6744}, {3,
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    \(\[IndentingNewLine]\[Sigma] := \(+\ at 1.57\)\), "\[IndentingNewLine]",
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    \(\(\(NonlinearFit[
      FinalData3, \[Sum]\+\(n = 1\)\%4\(\[Sum]\+\(r = d\)\%4\(\((\(r!\))\)\ 
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\[Epsilon]\^d\ \((1 - \[Epsilon])\)\^\(r - d\)\ \[ExponentialE]\^\(-\(\((r\  
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- \ n\ \[Mu])\)\^2\/\(2\ n\ \[Sigma]\^2\)\)\)*\ \[Lambda]\^n\ 
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    \)\)], "Input"],

Cell[BoxData[
    \(NSum::"nslim" \(\(:\)\(\ \)\)
      "Limit of summation \!\(#1\) is not a number."\)], "Message"],

Cell[BoxData[
    \(NSum::"nslim" \(\(:\)\(\ \)\)
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