Decision Optimization

Decision Optimization

Delivers prescriptive analytics capabilities and decision intelligence to improve decision-making.


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  • 1.  Specifying Which Constraints To Relax

    Posted 09/15/16 05:04 PM

    Originally posted by: mathygirl


    Is there a way to specify a subset of constraints to relax in OPL script when running feasopt?


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    #OPLusingCPLEXOptimizer


  • 2.  Re: Specifying Which Constraints To Relax

    Posted 09/16/16 03:30 AM

    Hi,

    you could have a look at the tech note http://www-01.ibm.com/support/docview.wss?uid=swg21615786

    Display conflict and relaxation information for infeasible models using OPL script

    Plus you may use preferences like

    opl2.relaxationIterator.attach(opl2.cts, opl2.prefs);

    in the example in CPLEX_Studio1263\opl\examples\opl\relaxationIterator

     

    And finally, for even better constraint relaxation handling, you may use SolveAnyway within Decision Optimization Centre :

    http://www.ibm.com/support/knowledgecenter/en/SSQVNT_3.9.0/ilog.odms.ide.odm.enterprise.help/ODME/Userman/topics/Customizing/DecSolveHowWorks.html

    regards

     


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    #OPLusingCPLEXOptimizer


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