[Scip] providing SCIP with a new current solution during BCP

[Hélène Toussaint]

Hi Ambros,


> Dear Hélène,
>
> sorry for the long wait.  Let me ask back to make sure I have understood
> you correctly: Are the solutions S and S' you talk about solutions of
> the LP relaxation?
Yes.
>   I.e., do you want to move to another LP solution on
> the optimal hyperplane?
Yes, exactly!

> Would this solution be basic and would you know
> the basis?
I think yes: I need to know the dual variables associated to this 
solution for my pricing.

Thank you for your answer,

Best,
Hélène
>
> Best regards
>
> Ambros
>
>
> Am 21.05.2013 09:18, schrieb Hélène Toussaint:
>> Hi,
>>
>> Can no one help me with this issue? I guess it means the answer is no :(.
>>
>> Perhaps is there a way to change the current lpi using the methods in
>> lpi.h?
>>
>> Best,
>> Hélène
>>
>> Le 06/05/2013 16:27, Hélène Toussaint a écrit :
>>> Dear all,
>>>
>>> I solve a MIP problem by BCP.
>>>
>>> Before the cutting phase I'd like to change the current solution:
>>> indeed from the current solution S, I compute several other solutions
>>> with the same objective value and among all these solutions I keep the
>>> solution S' which meets a certain condition. S' is valid for the
>>> current constraints. I'd like S' to become the current solution and
>>> update the dual variables so that I can continue the cutting, pricing
>>> and branching with S'.
>>>
>>> Is there a way to do this with SCIP?
>>>
>>> Best regards,
>>>
>>> Hélène
>>>
>>>
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>>
>>
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