Construct target distribution from a BridgeStan StanModel object.

Construct target distribution from a BridgeStan StanModel object.

Usage

target_distribution_from_stan_model(model)

Arguments

model

Stan model object to use for target (posterior) distribution.

Value

A list with entries

• log_density: A function to evaluate log density function for target distribution given current position vector.

• value_and_gradient_log_density: A function to evaluate value and gradient of log density function for target distribution given current position vector, returning as a list with entries value and gradient.

Examples

model <- example_gaussian_stan_model()
target_distribution <- target_distribution_from_stan_model(model)
withr::with_seed(
  876287L, state <- chain_state(stats::rnorm(model$param_unc_num()))
)
state$log_density(target_distribution)
#> [1] -37.48172