Posts on Hugo Sant'Annahttps://hsantanna.org/posts/Recent content in Posts on Hugo Sant'AnnaHugo -- gohugo.ioenhsantanna@uab.edu (Hugo Sant'Anna)hsantanna@uab.edu (Hugo Sant'Anna)© 2026 Hugo Sant'AnnaMon, 20 Apr 2026 10:00:00 -0400The research pipeline is not linearhttps://hsantanna.org/posts/research-pipeline-not-linear/Mon, 20 Apr 2026 10:00:00 -0400hsantanna@uab.edu (Hugo Sant'Anna)https://hsantanna.org/posts/research-pipeline-not-linear/On diminishing returns, context rot, and the one worker-critic pair in <a href="https://github.com/hugosantanna/clo-author" target="_blank" rel="noreferrer">Clo-Author</a> where both curves go bad at once.Notes from building Clo-Authorhttps://hsantanna.org/posts/notes-from-building-clo-author/Sun, 19 Apr 2026 10:00:00 -0400hsantanna@uab.edu (Hugo Sant'Anna)https://hsantanna.org/posts/notes-from-building-clo-author/Kicking off a series of notes on building <a href="https://github.com/hugosantanna/clo-author" target="_blank" rel="noreferrer">Clo-Author</a>.So, what is bunching?https://hsantanna.org/posts/bunching/Sun, 04 Aug 2024 10:31:27 -0400hsantanna@uab.edu (Hugo Sant'Anna)https://hsantanna.org/posts/bunching/A brief introduction to bunching analysis as a causal method, based on <a href="https://onlinelibrary.wiley.com/doi/abs/10.3982/ECTA11231" target="_blank" rel="noreferrer">Caetano (2015)</a>.Expectation Maximization Algorithm and Gaussian Mixtureshttps://hsantanna.org/posts/expectation-maximization/Fri, 05 Apr 2024 10:31:27 -0400hsantanna@uab.edu (Hugo Sant'Anna)https://hsantanna.org/posts/expectation-maximization/A gentle explanation of Gaussian Mixtures and the Expectation Maximization algorithm, with a labor market application in R.Quick Start to Doubly Robust Estimatorshttps://hsantanna.org/posts/quick-start-doubly-robust/Tue, 13 Dec 2022 10:31:27 -0400hsantanna@uab.edu (Hugo Sant'Anna)https://hsantanna.org/posts/quick-start-doubly-robust/A quick tutorial explaining why Doubly Robust estimators are so powerful — with fully reproducible R code.