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Articles on Optimization Loop.

Measurement, A/B testing, retraining — a closed loop that makes the system better every month instead of decaying over time.

Optimization LoopMeasurementOptimisationStatistics

Before running an A/B test, work out one number — for most Vietnamese sites it exceeds a year of traffic

You do not have to run an A/B test to find out whether it can conclude anything. One calculation, about a minute's work, gives the minimum number of visitors required. For a site with 500 visitors a day, detecting a 10% improvement needs 322 days — and the habit of checking results daily pushes the false-win rate from 4% to 20%.

13/09/202611 min read