Custom brms family symlog-Normal — symlognormal • bayesfam

Custom brms family symlog-Normal

Usage

symlognormal(link = "identity", link_sigma = "log")

Source

Based on Hafner, D., Pasukonis, J., Ba, J., & Lillicrap, T. (2023). Mastering Diverse Domains through World Models. (https://doi.org/10.48550/arXiv.2301.04104)

Arguments

link: Link function argument (as string) for Median argument. Left as identity!
link_sigma: Link function argument (as string) for Shape argument

Value

symlognormal brms model-object

Examples

a <- rnorm(1000)
data <- list(a = a, y = rsymlognormal(1000, 0.5 * a + 1, 2))
fit <- brms::brm(
  formula = y ~ 1 + a, data = data,
  family = symlognormal(), stanvars = symlognormal()$stanvars,
  refresh = 0
)
#> Compiling Stan program...
#> Error in .fun(model_code = .x1): Boost not found; call install.packages('BH')
plot(fit)
#> Error: object 'fit' not found