Skip to content
How to ThinkIn the Age of AI
Definitionv1DF-564

Stopping rule

a pre-defined criterion or condition that determines when an optimization effort should cease, consisting of three components: a threshold (what constitutes sufficient improvement), a metric (how to measure progress toward that threshold), and a trigger (what action to take when the threshold is met).

Why This Is a Definition

This definition precisely delineates the concept of a stopping rule by specifying its essential components and function. It establishes the rule as a structured, pre-commitment mechanism rather than an ad-hoc decision, which is the key distinction emphasized in the lesson. The definition distinguishes stopping rules from mere thresholds by requiring the complete triad of threshold, metric, and trigger.