Multilevel data in brms distributional models with smooth terms (splines)

This short entry summarizes what I found (and learned) about using smooth terms (splines) within brms mixed-models fitted with the brms R-package and a zero-one-inflated beta family (zoib) and, about the importance of modelling sigma in these cases. The main reference to this entry was found in Estimating Distributional Models with brms (Paul Bürkner, 2023) …

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