Well, the first article listed in my last SoC post seems to have just what I am after, I just hadn’t read it/didn’t have the necessary background in RETE to understand how close it was to what I was looking for.
It describes an Extended Rete for Mixed Inference (ERMI). I will find out exactly how clear it is when I actually try to extend the LISA code to work with it. I’ve still got to get used to the Lisa source.
I’m going to ask my brother about a CV for the authors (they are from the Seoul National University, and he speaks Korean), to try to see what else they have done that relates or that may be of interest.