[SCIP] rounding error?

James Cussens james.cussens at york.ac.uk
Sat Nov 12 18:07:46 CET 2016


Hi Jakob,

Thanks for the pointer to those two parameters, that was very helpful.

On 12 November 2016 at 15:54, Jakob Witzig <witzig at zib.de> wrote:

> Hi James,
> SCIP provides the possibility to define an objective limit, i.e.,
> SCIPsetObjlimit(scip, objlimit). Afterwards, SCIP only declares solution as
> feasible if they are strictly better than objlimit.
>

But I want solutions to be feasible only if they are *worse* (or equal) to
objlimit, so I can't see how I can use SCIPsetObjlimit(scip, objlimit).

Perhaps I should call
 SCIP_CALL( SCIPupdateLocalLowerbound(subscip, lowerbound) );
after working out what "lowerbound" should be. (Have to deal with offset
and scale.) What do you think?

James

-- 
James Cussens
Dept of Computer Science &
York Centre for Complex Systems Analysis
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