Compare Models Using LOO

Compares multiple models using LOO-CV. Returns a comparison table with expected log predictive density (elpd) differences.

Usage

compare_loo(..., criterion = c("loo", "waic"))

Arguments

...

Named CmdStanMCMC objects or loo objects to compare.

criterion

Character. Comparison criterion: "loo" (default) or "waic".

Value

A data.table with model comparison statistics.

See also

vignette("model_diagnostics") for comprehensive model comparison workflow.

Statistical Methods: Model Assessment for interpreting elpd differences.

compute_loo, create_loo_table, compare_growth_models

Examples

if (FALSE) { # \dontrun{
comp <- compare_loo(
  "von Bertalanffy" = vb_fit,
  "Gompertz" = gomp_fit,
  "Logistic" = log_fit
)
print(comp)
} # }