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b3112a

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Dec 11, 2010, 2:38:28 PM12/11/10
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Hi,
I used minlp (solver:dicopt) for the first time. But in "equation
listing" part, I saw the equations as "(0)*X(i,j)" instead of the
values of the variables. The solution is true, but I didn't see (0) in
equations before. (the zero is in paranthesis). Is it normal? Thank
you for your answer

Tavallali

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Dec 11, 2010, 9:45:55 PM12/11/10
to gams...@googlegroups.com
Hello

I hope I have understood your problem correctly. The equation listing of GAMS *.lst file, shows the first partial derivative of each nonlinear term in parenthesis.  In contrast to LPs that there are no parenthesis. That is multiplied by the variable to form a linearized approximation of nonlinear term. It is only for debugging purposes as far as I know. So you will check if the equations are exactly what you need. You can find a complete information at "The Equation Listing" subsection of GAMS user manual.
Please feel free to write back in case my description is vague.
Best Regards

--
      محمد صادق تولّلی 
Mohammad Sadegh Tavallali
tavallal...@gmail.com



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