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st: initial values for parameters NLSUR

From   "Pedro Tiago Carvalho" <>
To   <>
Subject   st: initial values for parameters NLSUR
Date   Fri, 16 Mar 2012 10:02:00 -0000

Dear All

I'm applying the command NLSUR. I wonder how to choose the initial values
points [initial values for parameters] to achieve the best solution. I have
observed that different initial values lead to different results ...

For example:

nlsur    .. , initial(a0 0.1 a1 0.2 a2 0.5)     and         nlsur    .. ,
initial(a0 0.1 a1 0.1 a2 0.1)   lead to different results .

Anyone can help me?

Thank you

Pedro Carvalho

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