SBC backend using the optimizing method from rstan.

SBC_backend_rstan_optimizing(model, ..., n_retries_hessian = 1)



a stanmodel object (created via rstan::stan_model)


other arguments passed to optimizing (number of iterations, ...). Argument data cannot be set this way as they need to be controlled by the package.


the number of times the backend is allow to retry optimization (with different seeed) to produce a usable Hessian that can produce draws. In some cases, the Hessian may be numerically unstable and not be positive definite.