The OMG standards body is looking at a Decision Model and Notation which could support/supplement the Business Process Model and Notation (BPMN) standard, provide the content for the "business rule task", and provide a common standard for decision tables, trees etc as represented in decision management tools.
Now, PMML *already* provides some of these models, albeit as output from predictive modeling tools that can then be used in automated decision services. Predictive models are not the sames as (UML) software models, but in practice many vendors do use things like business object models with a close association to UML and similar constructs.
A question: is this of interest to the PMML community, and if so how can this best be realized?
Disclosures: we at TIBCO do predictive models (via Spotfire S+/Miner) and rule execution (via BusinessEvents). But not PMML at this point in time...