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How to set JAVA/Cplex parameters to enable "feasibility pump" heuristic ?

  • 1.  How to set JAVA/Cplex parameters to enable "feasibility pump" heuristic ?

    Posted Tue February 24, 2015 11:32 AM

    Originally posted by: Zak86


    Hello Cplex users,

    I have to solve a MIP with the "feasability pump"(FP)  heuristic . So i must force CPLEX to use this method .

    I see that the FP method was introduced in JAVA/CPLEX in line 3 in the table below,  find in http://www-01.ibm.com/ but i don't know how to call it exactly before cplex.solve( ) in JAVA/CPLEX ?  

    
C Name                    CPX_PARAM_FPHEUR (int)

C++ Name                FPHeur (int)

Java Name               FPHeur (int)

.NET Name               FPHeur (int)

OPL Name                fpheur

Python Name             mip.strategy.fpheur

MATLAB Name             mip.strategy.fpheur

Interactive Optimizer      mip strategy fpheur

Identifier                          2098
    THANK YOU VERY MUCH,

    Zak

     


    #CPLEXOptimizers
    #DecisionOptimization


  • 2.  Re: How to set JAVA/Cplex parameters to enable "feasibility pump" heuristic ?

    Posted Tue February 24, 2015 03:53 PM 
    IloCplex cplex;
//...
cplex.setParam(IloCplex.Param.MIP.Strategy.FPHeur, 1);
// or maybe 2 rather than 1 -- see the docs

     


    #CPLEXOptimizers
    #DecisionOptimization


  • 3.  Re: How to set JAVA/Cplex parameters to enable "feasibility pump" heuristic ?

    Posted Wed February 25, 2015 05:45 AM

    Originally posted by: Zak86


    Great !!!

    Thank you very much :-)

    Zak


    #CPLEXOptimizers
    #DecisionOptimization


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