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mjskay / tidybayes

Bayesian analysis + tidy data + geoms (R package)
http://mjskay.github.io/tidybayes
GNU General Public License v3.0
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posterior_epred for truncated 'gen_extreme_value' models #307

Closed JackCaster closed 1 year ago

JackCaster commented 1 year ago

I am doing an extreme value theory analysis so I built a model with brms and the gen_extreme_value family. Specifically, I am using a truncated response distribution brm(y | trunc(lb = 0.0) ~ ..., family = gen_extreme_value(), .... The sampling works but then I get the error Error: posterior_epred values on the respone scale not yet implemented for truncated 'gen_extreme_value' models. during postprocessing. Is this something that could be implemented in tidybayes or shall this be fixed in brms directly?

mjskay commented 1 year ago

Ah yeah, that's a brms issue unfortunately --- can't be fixed on the tidybayes side, which depends on brms::posterior_epred() having an implementation for the model in question. Sorry I can't be of more help!