Noel Tock noeltock

The Architecture of Personalization Attribution: An Exhaustive Analysis of Lift Calculation Methodologies Across Industry Leaders

1. Introduction: The Measurement Crisis in the Age of Algorithms

The digital experience landscape has undergone a seismic shift from the era of "One-Size-Fits-All" to the age of "Precision Personalization." In the classical paradigm of A/B testing, the objective function was clear: identify the single variation that maximizes the average metric for the entire population—the Average Treatment Effect (ATE). The statistical tools for this task, primarily Frequentist hypothesis testing (t-tests, z-tests), were designed to determine if a static change produced a static result different from a baseline, within a fixed sample horizon.

However, the user query posits a critical sophisticated question: _If Bayesian Probability to Be Best (P2BB) is the accepted gold standard for A/B testing (championed by vendors like VWO and largely adopted conceptually by others), what is the equiva

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