Decision Optimization

Decision Optimization

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  • 1.  Confusion about the CP solution

    Posted 11/09/17 08:53 PM

    Originally posted by: hzwpku


    Hello,

    I use 12.7.1 to run the CP model. In my code, I set the time limit as 5min (cp.param.TimeLimit=300).

    In some cases, the running time is less than 5min, but the cooresponding solution is not optimal. (since I can find a feasible solution with better objective value)

    There are no other termination conditions.

    So is this normal?


    #DecisionOptimization
    #OPLusingCPLEXOptimizer


  • 2.  Re: Confusion about the CP solution

    Posted 11/10/17 07:01 AM

    Originally posted by: PhilippeLaborie


    Hello,

    This is clearly not normal. Could you attach a .cpo that reproduces the problem ?

    PS: As you are using CP Optimizer engine and not CPLEX, could you please post your questions on the Constraint Programming forums (https://www.ibm.com/developerworks/community/forums/html/category?id=33333333-0000-0000-0000-000000000268). Thanks.


    #DecisionOptimization
    #OPLusingCPLEXOptimizer


  • 3.  Re: Confusion about the CP solution

    Posted 11/10/17 09:13 PM

    Originally posted by: hzwpku


    Thanks for your reply. I'll move to the cp forums.


    #DecisionOptimization
    #OPLusingCPLEXOptimizer


  • 4.  Re: Confusion about the CP solution



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