PROXIMA scores proxy reliability via a composite of effect correlation, directional accuracy, and segment fragility, achieving 98.4% decision agreement with an oracle on two public datasets.
From augmentation to decomposition: A new look at CUPED in 2023.arXiv preprint arXiv:2312.02935, 2023
3 Pith papers cite this work. Polarity classification is still indexing.
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Analyzes post-CUPED estimators and robust variance methods for multi-arm and two-stage A/B tests, showing that naive variance estimators produce misleading inferences in complex settings.
Including LLM predictions as covariates in standard regression adjustment for randomized experiments reduces variance with a do-no-harm property that reverts to the unadjusted estimator when predictions are uninformative.
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Ensuring Trustworthy Online A/B Testing: Addressing Five Key Questions on CUPED
Analyzes post-CUPED estimators and robust variance methods for multi-arm and two-stage A/B tests, showing that naive variance estimators produce misleading inferences in complex settings.