Page Comparison

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• I do not see the impact on the change of scope/constraints on the results

  • Possible cause : all the needed calculation steps are not executed.

    • Solution : When the scope, the business rules or the objectives are changed, the run step will have to be executed again to compute the new results. After that, executing the results step is needed to update the visualizations.

• Some results are really strange (massive negative margins etc.)

  • Check : The source data; often we are missing a filtering step removing bogus inputs or data that do not fit the scope of the problem. Ensure that you work on the correct subset of data and if the behavior persist, look into the tables to find the explanation with the id of the involved points.

• The target objectives are not reachreached

  • Check : Look at the information tooltip next to the finished OE job. If it says that on the majority of the agents Some value finders are still moving fast with unsatisfied neighbor it means that the OE need more steps to find the solution.

    • Solution : Change the number accordingly and start a new run.

  • Possible cause : The constraint is not enough tuned

    • Solution : Increase the priority of the constraint, check its target value and the minimum steps of the VF

  • Possible cause : Over-constrained problem : the OE job says that Some value finders are very close to their boundaries and may be stuck there it means that the solution of the problem is outside its research space.

    • We can still pinpoint what are these problematic constraints et what are the elements affected

    • We can, if there it makes business sense, adjust other constraints to make for room for the optimization

    • Define with the client what are the most important constraint to satisfy

    • Note : Do not hesitate to test some runs with more lenient constraints : people will often try to put more constraints than needed, by trying to predict the impact of a modification somewhere and applying their expected results on the intermediate steps from the product the target aggregation. More often than not it will only restrict the optimization space for no gain.

  • Possible cause : Over-constrained problem from conflicting objectives. Two or mode more constraints push the system in irreconcilables directions.

    • e.g. : a constraint to reduce the list price and a constraint to increase its margin

    • Check : the “Unacceptable” lines in the results tables to validate that other constraints are in conflict with the one you’re working on.

    • Solution : with feedback from the domain, decide if you have to modify some constraints or to add exception for specific agents (e.g.: not optimizing for some specific product).