This function is used to specify only the initial values for a parameter. This is primarily used for hierarchical parameters whose distributions are fixed within the model and cannot be altered by the user.
See also
Other Prior:
prior_beta(),
prior_cauchy(),
prior_gamma(),
prior_invgamma(),
prior_logistic(),
prior_loglogistic(),
prior_lognormal(),
prior_normal(),
prior_std_normal(),
prior_student_t(),
prior_uniform()