[Scip] Best solution in pricing iteration

[Gerald Gamrath]

Hi Jan,

SCIPgetBestSol() returns the best primal solution found so far, i.e., 
the best solution which fulfills all constraints, including integrality 
restrictions. Therefore, it can happen that this solution does not 
change during the solving process for some time until an LP solution 
fulfills the integrality restrictions or a heuristic constructs a primal 
solution.

The current LP solution, on the other hand, should change in (almost) 
every pricing iteration. As you said, you can get the value of a single 
variable in the LP relaxation solution via SCIPvarGetLPSol(). Moreover, 
you can also create a (complete) solution initialized to the current LP 
solution with SCIPcreateLPSol().

Best,
Gerald

Am 06.06.2014 20:05, schrieb Jan Berling:
> Dear Mailing List,
>
> hopefully this is properly sorted to my last question
> http://listserv.zib.de/pipermail/scip/2014-June/002022.html.
>
>
> I tried a little bit around, how I can get the solution in every
> pricing iteration. Getting the solution directly is still not
> possible, but the function SCIPvarGetLPSol() gives the correct
> solution value for every variable. This is rather strange and not very
> practical.
>
> Could you explain, why SCIPgetBestSol() and SCIPgetSolOrigObj() don't
> give the correct objective value in a pricing iteration?
>
> Cheers
> Jan
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