Hi,

Do you happen to have any documentation explaining the loo_R2() function? Trying to compare it to the bayes_R2() function based on Gelman et al (2017, and 2018)? When I compare two different regression models, the ordering of preference between these two models (i.e. which is ‘better’) changes, depending on which of these statistics I calculate (the bayesR2 or the looR2). I also note that the loo_R2() does not produce any Bayesian certainty interval estimates for me and complains about the “Pareto k diagnostic values are too high.”

Many thanks,