[SCIP] set cutoffbound

Ambros Gleixner gleixner at zib.de
Tue Jan 11 14:46:14 CET 2022


Dear Markó,

Does SCIPupdateCutoffbound() work for you?

Best,
Ambros


Am 11.01.22 um 13:29 schrieb Horváth Markó:
> Dear all,
> 
> I'm working on a branch-and-price algorithm, and I want to apply a 
> primal heuristic each time a feasible (integer) solution. Basically, I 
> build a /schedule/ based on this solution, and I apply a local-search 
> based approach to improve this schedule, and thus to get a better 
> feasible solution. My problem is that I cannot create a SCIP solution 
> since it may require columns/variables which are not generated for the 
> problem yet. Actually, I do not need to create such a solution, it would 
> be enough if I could set a cutoff bound for the problem (that is, to set 
> a global upper bound for the objective, and thus nodes with higher 
> lowerbound could be pruned. (Note that I did not implement primal 
> heuristic callback due to the reasons mentioned above, but I apply this 
> procedure in an event handler).
> 
> I could not find such a parameter in the list of all parameters, and I 
> could not find solution for this problem in the list server archives. 
> Can you help me?
> 
> Best regards,
> Marko
> 
> 
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