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Status Functionality already exists
Created by Guest
Created on Jan 31, 2022

Don’t remove feature RetePlus ordering modes

As the doc days (https://www.ibm.com/docs/en/odm/8.11.0?topic=keywords-priority), RetePlus ordering modes are deprecated since OCM 8.6. Have not been removed yet in version 8.11.0

The wish is DON'T REMOVE this feature. It’s inherited from CRE, but still very useful with the new DE. In fact, has been used in decision services in production and there is no easy replacement, so it will cause a big impact in existing customers.

Here is an example where this feature is used in real life project. This is pricing application for a company in the Travel&Transportation sector. The decision service is used to determine applicable promotions. There are many potential promotions that can apply in different circumstances. Promotions are not accumulable, so the different promotions are fired in a RuleTask with algorithm "RetePlus", exit criteria “Rule” and rule ordering “Literal”, this way only the most priority promotion is executed. Also, business user can define new promotion rules and can define the priority by ordering the rules in the RuleTask.

There may be some alternative designs for this purpose, but none of them are so good as the one provided by this feature. For instance, splitting each promotion in its own RuleTask and controlling the execution order of the RuleTasks in the Ruleflow, will not work well because the big number of potential promotions.


So, please don't remove this feature.

Idea priority High
  • Admin
    Antony Viaud
    Feb 14, 2022

    Hello, I'm closing this request as there is no plan to remove the core RetePlus behavior. Thanks again for sharing your feedback.

  • Admin
    Antony Viaud
    Feb 4, 2022

    It's taken into account, but doc says: "A RetePlus network is created but there is no agenda. Rules are activated one by one according to the order provided by the body, and the instances are run without reevaluation."

  • Guest
    Feb 3, 2022

    Antony, I can confirm you that "literal" ordering it's taken into account in RetePlus. If you edit the rule task and set a different order in the referenced rules, you have a different result.

    The use case that I described is real and in production, using this feature.

    Thanks.

  • Admin
    Antony Viaud
    Feb 2, 2022

    Hello,

    thank you for your feedback.

    Documentation here explains that modes "literal" and "priority" are actually not using RetePlus inference.

    As such, they are quite useless when using RetePlus and that's why they've been deprecated.

    I'm checking with the dev team what would be recommended for sorting rules when using RetePlus (my current understanding is that the RetePlus "Default" mode for RetePlus is "dynamic", which is a superset of static priorities).

    I'll provide an update once it's clear.

  • Guest
    Feb 1, 2022

    If the change of execution order implies a change in the ruleflow that has too much impact. Keep the RetePlus ordering modes.