All my ecology peeps slinging the GAM(M)s might find this paper interesting. I was surprised to learn there is a frequentist interpretation of GAM(M)s! (jk) https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/2041-210X.14498?campaign=wolearlyview
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https://scholar.google.com/scholar?q=Bayesian+views+of+generalized+additive+modelling