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Topic
  • 2 replies
  • Latest Post - ‏2013-01-10T14:17:25Z by SystemAdmin
qtbgo
qtbgo
116 Posts

Pinned topic multi-criteria optimization?

‏2013-01-10T10:45:47Z |
in 12.5 version, CP Optimizer can solve an OPL model with a multi-criteria objective.
The function staticLex defines a multi-criteria policy, ordering the different criteria and performing lexicographic optimization.

Who can refer me a literature explaining the theory of the multi-criteria optimization method used by ILOG?
thanks in advance
Updated on 2013-01-10T14:17:25Z at 2013-01-10T14:17:25Z by SystemAdmin
  • qtbgo
    qtbgo
    116 Posts

    Re: multi-criteria optimization?

    ‏2013-01-10T11:49:12Z  
    My undrstand is that CP will first optimize objective 1, then objective 2,....

    The question is when optimizing objective 1, what is the stop condition?
    I mean when CP will switch to objective 2?
  • SystemAdmin
    SystemAdmin
    623 Posts

    Re: multi-criteria optimization?

    ‏2013-01-10T14:17:25Z  
    • qtbgo
    • ‏2013-01-10T11:49:12Z
    My undrstand is that CP will first optimize objective 1, then objective 2,....

    The question is when optimizing objective 1, what is the stop condition?
    I mean when CP will switch to objective 2?
    CP Optimizer will improve both objectives at the same time but will improve criteria 2 only if it does not degrade criteria 1 and in turn any improvement of criteria 1 is worth any loss on criteria 2. It is not a 2-step optimization. You can see that by looking at the log of the example truckfleet.

    Regards

    Philippe