[Scip] Best dual sol

Ahmad Moradi ahmad.moradi at gmail.com
Tue Apr 9 08:26:18 MEST 2013


Dear Ambros,

Can I use SCIPlpiGetsol() ?

bests, Ahmad

On Mon, Apr 8, 2013 at 8:56 PM, Ahmad Moradi <ahmad.moradi at gmail.com> wrote:

> On 04/08/2013 08:01 PM, Ambros Gleixner wrote:
>
>> Dear Ahmad,
>>
>> no, this information is currently not available in SCIP and I am not
>> sure this would be possible since the open nodes, one of which has the
>> best dual bound, are not solved and have no LP solution available.  So
>> it looks to me like you would need to solve the LPs of the children
>> after branching before continuing with node selection.  Is this what you
>> intended?
>>
>> Best regards,
>>
>> Ambros
>>
>>
>>
>>
>>
>> Am 08.04.2013 17:30, schrieb Ahmad Moradi:
>>
>>> Dear all,
>>>
>>> Does SCIP maintain an lp solution whose objective function is the
>>> current best dual bound during branching. If so how I could access the
>>> lp solution.
>>>
>>> Bests, Ahmad
>>> ______________________________**_________________
>>> Scip mailing list
>>> Scip at zib.de
>>> http://listserv.zib.de/**mailman/listinfo/scip<http://listserv.zib.de/mailman/listinfo/scip>
>>>
>>>  Dear Abmbros,
>
> Thanks for you email.
>
> In my problem I have to route flows on single paths (non-bifuricated). So
> I would test adding constraints that force using single paths to a node of
> the BB tree while branching. I was wondering whether I could have access to
> variables value of the best lp sol to possibly add better constraints.
>
> Bests, Ahmad
>
>
>
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