[Coin-discuss] SBB getObjValue max problem

Sat Jun 19 05:57:44 EDT 2004

Matt,

I have replaced the internal uses of getObjValue by getMinimizationObjValue
and modified getObjValue - is that better?

John

             Matthew Galati                                                
             <magala at wnt.sas.c                                             
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             06/18/2004 11:59                                              
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                                                                   Subject 
             Please respond to         [Coin-discuss] SBB getObjValue max  
               coin-discuss            problem                             

When solving a max problem with SBB and getting back the objective
value, it looks to me like the signs are switched. I presume,
internally,  that SBB flips the objective and solves it as a min - but
it doesn't seem to switch back the final objective value.

siBB->setObjSense(-1);
SbbModel sbb(*siBB);
sbb.branchAndBound();
correctObj = -1 * sbb.getObjValue();

Matthew

--
Matthew Galati -- Optimization Developer
SAS Institute -- Analytical Solutions / Operations R & D
Office R4112 O: 919-531-0332 F: 919-677-4444
URL: http://sagan.ie.lehigh.edu/mgalati/

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