[Scip] Dive

[Ambros Gleixner]

Hi Jonas,

yes, this is possible.  I cannot think of any big problems.  The most 
important issue is that the already existing columns are not modified 
(except for bounds and objective coefficients, of course) and that the 
LP is shrunk to the initial size when calling SCIPendDive().  This 
should be completely parallel to SCIPaddRowDive().

I do not see another possibility except for expensive ways such as using 
a sub-SCIP.

You can ask me any questions if you run into problems during the 
implementation.  We would be happy to include such an extension into the 
next release.

Ambros


Am 06.05.2013 10:03, schrieb Jonas Witt:
> Hi all,
>
> I use the diving mode and I would like to add columns to the diving lp.
> Is it possible to write a SCIPaddColDive()-function which is similar to
> the SCIPaddRowDive()-function? What problems might occur? Or is there
> another possibility to do this?
>
> Best regards,
> Jonas
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-- 
____________________________________________________________
Ambros M. Gleixner
Zuse Institute Berlin - Matheon - Berlin Mathematical School
http://www.zib.de/gleixner