Decision Optimization

Decision Optimization

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

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  • 1.  Search and Random Seed

    Posted 2 days ago

    Hello, 

    I have a scheduling & allocation algorithm that is working well, with customed search_phases.

    On one specific use case, depending on the random seed value, I have a solution within 1 sec, or no solution in 5 min. It is a bit disturbing, I would like to know if there is a way to let the solver test different seed very quickly, and focus on a specific seed once a solution is found.

    Jean-Christophe



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    Jean-Christophe GUILLERMIN
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  • 2.  RE: Search and Random Seed

    Posted 2 days ago

    Hi,

    1) What about setting a time limit 10s and then if after 10 s no solution then try another random seed else go on with the solve ?

    2) Do you have a way to make the problem harder with more constraints but with less flexibility to get a first feasible solution and then warmstart into the first problem ?

    The first way is much simpler and much better if you get no solution after 10 s for not that many ransom seeds

    Best regards



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    [Alex] [Fleischer]
    [Data and AI Technical Sales]
    [IBM]
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    Original Message


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