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I have been looking for quite a while for an algorithm for the GRG2 method either in a .net assembly or an algorithm i could program myself but I cant find a decent representation of the algorithm to work with.

Does anyone here have any resources they would be willing to share?

Thanks.

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    I am looking for this too.2012-07-03

2 Answers 2

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Sorry to answer the question I put a bounty on, but try the free Microsoft Solver Foundation. Microsoft Excel's Solver uses the GRG2 algorithm by default, and with MSF you have a .NET API for it. Note that it is not dependent on Excel in any way though.

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    Wow. I will check this out tonight, but if it works I owe you big time.2012-07-06
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    I am not totally sure it is using GRG2 but whatever it does it seems to work just as well. I got some help on using it at StackOverflow [here](http://stackoverflow.com/questions/11303094/how-can-i-emulate-microsoft-excels-solver-functionality-grg-nonlinear-in-c).2012-07-06
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    Any chance you could check into this ASAP so I can get my bounty back if it is a viable solution? ;-)2012-07-10
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    I havent gotten it to work yet, but its given me a good start.2012-07-11
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The following article mentions OpenMI and GRG2 method:
http://www.openmi-life.org/events/secondWorkshop/UTH_2nd_OpenMI_Life_Workshop.pdf