compare                 Model comparison
extract_log_lik         Extract log-likelihood from a Stan model
loo                     Leave-one-out cross-validation (LOO)
loo-package             Efficient LOO and WAIC for Bayesian models
print.loo               Print and plot methods
psislw                  Pareto smoothed importance sampling (PSIS)
waic                    Widely applicable information criterion (WAIC)
