Treat drift as a question, not a verdict
Use control-chart thinking to distinguish expected variation from drift worth investigating.
The move: investigate drift with a baseline, a dependency check, and a symptom check. Reference window A baseline is a choice. Compare today's traffic to the same weekday, season, campaign, or population when those factors drive normal variation. A bad baseline turns ordinary seasonality into fake emergencies. Model dependency Not every shifted field matters. Prioritize features with high model influence, known fragility, or a direct path to decision thresholds. Low-impact features may deserve a ticket, not a page. Impact connection The strongest drift investigation connects input movement to output movement and then to user or business impact. Without that chain,…
Sign up free — one personalized lesson every day, matched to your role and goals.
Already have an account? Sign in