I’m trying to fit a simple Student-t model with an
expp1 prior on \nu. With the following code
dat <- tibble(y = rt(n = 100, df = 5)) fit <- brm(data = dat, family = student, formula = y ~ 1, prior = c(prior(normal(0, 10), class = Intercept), prior(normal(0, 10), class = sigma), prior(expp1(1/10), class = nu)))
I get this error
Error in stanc(model_code = paste(program, collapse = “\n”), model_name = model_cppname, : failed to parse Stan model ‘file87f99d24c9’ due to the above error.
If I take the \nu prior out, the model runs fine. What am I missing?
Please also provide the following information in addition to your question:
- Operating System: macOS High Sierra
- brms Version: 3.4.0