Hey guys, thank you for the great responses!

• "Accurate Intelligible Models with Pairwise Interactions" seems great - as far as I can understand. That's what I've been referring to with "adding structure to models". Crazily how thin is the reference section: lot of exciting work to do!
  • - Please do correct me if I'm being too naive, but are there other approaches for "building sub-models" at the splitting point?
• u/mickman_10, u/TheFlyingDrildo, are you also aware of any connection with Symbolic Regression or Association Rule extraction?