Decision Optimization

Decision Optimization

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


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  • 1.  How to get the Gap?

    Posted 03/31/19 07:43 AM

    Originally posted by: 88Simon88


    Hello,

    I am running a model and I have two termination condition, one for time (24 hours) and the other one for the gap (1%). Suppose that after 24 hours, the CPLEX could find the optimal solution, but there is the best solution, what is the gap for that solution?

    Best regards


    #DecisionOptimization
    #OPLusingCPLEXOptimizer


  • 2.  Re: How to get the Gap?



  • 3.  Re: How to get the Gap?

    Posted 04/01/19 08:49 AM

    Originally posted by: 88Simon88


    Thanks for your reply, but what is the difference between epgap and what has been mentioned on that link?


    #DecisionOptimization
    #OPLusingCPLEXOptimizer


  • 4.  Re: How to get the Gap?

    Posted 04/01/19 11:50 AM

    Hi

    epgap is a setting to tell cplex when to stop.

    In the link you have a measure of the gap.

    Suppose you set epgap to 0.01 and a time limit to 10s

    Then cplex stops after 10s and you want to know the gap.

    Then you use what is in that link

    regards


    #DecisionOptimization
    #OPLusingCPLEXOptimizer


  • 5.  Re: How to get the Gap?

    Posted 04/01/19 12:01 PM

    Originally posted by: 88Simon88


    Thank you so much for clarification.

     

    Best regards


    #DecisionOptimization
    #OPLusingCPLEXOptimizer