R/fit.R
fit-method-hessian.RdThe $hessian() method provides access to the Stan model's
log_prob, its derivative, and its hessian.
hessian(unconstrained_variables, jacobian_adjustment = TRUE)(numeric) A vector of unconstrained parameters
to be passed to hessian.
(logical) Whether to include the log-density adjustments from un/constraining variables.
# \dontrun{
fit_mcmc <- cmdstanr_example("logistic", method = "sample", force_recompile = TRUE)
#> Compiling Stan program...
# fit_mcmc$init_model_methods(hessian = TRUE)
# fit_mcmc$hessian(unconstrained_variables = c(0.5, 1.2, 1.1, 2.2))
# }