[Coin-discuss] Open-source Modeling Languages

[Matthew Galati]

FYI. I know this is a discussion about OpenSource languages.

But, what you describe below can be easily done with SAS/ORs OPTMODEL language. By declaring non-static index sets, parameters, etc. you can easily modify the model components based on some output in some loop. I don't know about other vendors - but, I suspect it should be possible.

-----Original Message-----
From: coin-discuss-bounces at list.coin-or.org [mailto:coin-discuss-bounces at list.coin-or.org] On Behalf Of Michael Hennebry
Sent: Tuesday, November 20, 2007 3:46 PM
To: Discussions about open source software for Operations Research
Subject: Re: [Coin-discuss] Open-source Modeling Languages

On Tue, 20 Nov 2007, Brian Borchers wrote:

> First, although many normal users produce models using a modeling
> language like AMPL, many other other users produce their problem
> instances using conventional programming languages like C.

Yup.  Some of us write programs that do things like this:
read data
generate problem
while(1) {
    solve problem
    if done break
    use solve output to edit problem
}
print result

The edit problem part can be hard with modeling language.

--
Mike   hennebry at web.cs.ndsu.NoDak.edu
"Horse guts never lie."  -- Cherek Bear-Shoulders

_______________________________________________
Coin-discuss mailing list
Coin-discuss at list.coin-or.org
http://list.coin-or.org/mailman/listinfo/coin-discuss