Definition
Plain language
A simple set of yes-or-no branches that leads to a decision, like a flowchart.
As stated in the literature
A model or hand-crafted rule that routes an input through a sequence of threshold tests to a leaf decision; used in this corpus as the hand-tuned routing rule in EDRM and contrasted with a learned classifier.
Also called: decision trees
Why it matters: It matters because its simple branching logic is easy to inspect and adjust by hand, unlike an opaque learned model.
For example, a support system might ask 'Is the payment over $100?' then 'Is the account new?' and route the case accordingly.
Heard on the show
“The routing rule is essentially a small decision tree.”Episode 077 — Reading a Model's Confidence Curve to Decide When Chain-of-Thought Is Worth It