[Coin-SMI] Re: Re: Changing right hand side of inequalities

ajking at mac.com ajking at mac.com
Sun May 29 08:42:48 EDT 2005


SMI assumes nonzero stochastic data adds to or replaces something in 
the core data.  When you have an explicit lower bound and an implicit 
upper bound then the software has to decide how to interpret a request 
to change the "right hand side".  Does it go to the upper bound or the 
lower bound, or both?  I prefer the precision of the direct interface, 
and it is easier to maintain and debug.

I use the smps cases for regression testing, mainly.

Alan King


>
>
> On Sun, 29 May 2005, Alan King wrote:
>
>> Well it's a good point.
>>
>> The question is how much effort is anyone willing to put into SMPS.  
>> My
>> personal opinion is that modeling languages are the way to go, and if 
>> you
>> need to interface with databases and filesystems then some big company
>> like IBM should make it easy for you.  But that isn't the case, yet, 
>> so we
>> have to think about interfaces.
>>
>> If there is an interface that works and is fast then use it.  IMHO
>>
>
> The problem is that there is no disclaimer of any sort with the 
> library,
> stating that using input files is buggy. If there are method to read
> files, they should work.
>
> I don't know the code well enough to fix it. I tried to locate where 
> the changing of rhs occur, I could not even do that. I would be 
> surprised
> if fixing this takes more than a couple of hours for somebody knowing 
> the
> code.
>
> Francois
>
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