A class for defining exponential priors to be translated to Stan code.
Objects of class PriorExponential
should not be created directly but by
the constructor prior_exponential()
.
Slots
stan_code
character. Stan implementation of the prior, with placeholders for exponential Stan function parameters surrounded with
{{
and}}
to be replaced withglue::glue()
.n_param
integer. Number of prior parameters (1).
constraint
character. Support of prior distribution,
"<lower=0>"
.beta
numeric. Inverse scale (>0).