Matteo CourthoudinTowards Data ScienceClustered Standard Errors in AB TestsWhat to do when the unit of observation differs from the unit of randomization·13 min read·Mar 17, 2024--2--2
Matteo CourthoudinTowards Data ScienceUnderstanding Group Sequential TestingHow to run valid experiments, with peeking and early stopping.·15 min read·Dec 26, 2023--3--3
Matteo CourthoudinTowards Data ScienceUnderstanding Instrumental VariablesHow to estimate causal effects when you cannot randomize treatment·12 min read·Nov 13, 2023--4--4
Matteo CourthoudinTowards Data ScienceBeyond Churn Prediction and Churn UpliftHow to best target policies in the presence of churn·12 min read·Jul 25, 2023--3--3
Matteo CourthoudinTowards Data ScienceEvaluating Uplift ModelsHow to compare and pick the best uplift model·18 min read·Jul 13, 2023--3--3
Matteo CourthoudinTowards Data ScienceFrom Causal Trees to ForestsHow to use random forests to do policy targeting·13 min read·Feb 20, 2023--3--3
Matteo CourthoudinTowards Data ScienceBayesian AB TestingUsing and choosing priors in randomized experiments.·11 min read·Jan 10, 2023--2--2
Matteo CourthoudinTowards Data ScienceExperiments on Returns on InvestmentAn introduction to the delta method for inference on ratio metrics.·13 min read·Dec 29, 2022--4--4
Matteo CourthoudinTowards Data ScienceMean vs Median Causal EffectAn introduction to quantile regression in A/B tests·11 min read·Oct 10, 2022--2--2