[Cbc] CoinModel Equality?

[Matthew Gidden]

Great, thanks for your response, Miles!


On Thu, Feb 6, 2014 at 12:27 PM, Miles Lubin <miles.lubin at gmail.com> wrote:

> Hi Matthew,
>
> CoinModel can be used to store an LP/MIP instance, but I don't believe
> there are any comparison methods. You'll likely have to manually iterate
> through the problem data to compare entry by entry, using whatever
> floating-point comparison tolerance is appropriate. I would also suggest
> building your infrastructure around a solver-independent interface like
> OSI, because it's always valuable to be able to compare the performance of
> different solvers. Any academic publication would be remiss to only use one
> open-source MIP solver when making claims about time to solve a particular
> problem.
>
> Best,
> Miles
>
>
> On Thu, Feb 6, 2014 at 12:51 PM, Matthew Gidden <gidden at wisc.edu> wrote:
>
>> Hi all,
>>
>> First time caller, long time listener. I'm gearing up the portion of my
>> research in which I'll be using and comparing simplex and branch-and-cut
>> solvers versus some naive solvers in our simulation environment [1]. We
>> require a permissive, open source license (for compatibility with our own -
>> BSD 3-clause), so the COIN suite was a natural fit.
>>
>> To the meat of my question:
>> I've written a high-level API for myself and other devs to use to
>> describe an problem instance in part of our simulation framework. I would
>> like to be able to unit test it such that a problem instance it describes
>> is equivalent to some known problem instance (read in through MPS, for
>> example). My initial thought was to compare configured CoinModels (i.e.,
>> builders). Is there an easy way to compare them? Is this the best approach?
>>
>> I look forward to your response, thanks!
>>
>> [1] http://fuelcycle.org/
>>
>> --
>> Matthew Gidden
>> Ph.D. Candidate, Nuclear Engineering
>> The University of Wisconsin -- Madison
>> Ph. 225.892.3192
>>
>> _______________________________________________
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>>
>>
>


-- 
Matthew Gidden
Ph.D. Candidate, Nuclear Engineering
The University of Wisconsin -- Madison
Ph. 225.892.3192
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