build_accounting_block
                        Build accounting block for TMG
build_beta_tmg_table    Build beta(TMG_t) table by sector and time
compare_models_loo      Compare models using PSIS-LOO
count_divergences       Count HMC divergences
drift_decomposition_grid
                        Drift decomposition over grid
evaluate_oos            Evaluate out-of-sample forecast metrics
export_model_comparison
                        Export model comparison to Excel
extract_convergence_evidence
                        Extract convergence evidence for kappa
                        parameters
extract_posterior_summary
                        Extract posterior summary from fitted model
fit_ou_nonlinear_tmg    Fit Bayesian nonlinear OU model with TMG effect
                        and SV
ou_nonlinear_tmg_stan_code
                        Stan code for nonlinear OU model with SV and
                        Student-t
plot_beta_tmg           Plot beta(TMG_t) evolution by sector
plot_drift_curves       Plot cubic OU drift curves
plot_sv_evolution       Plot stochastic volatility evolution
summarize_sv_sigmas     Summarize stochastic volatility sigmas
validate_ou_fit         Validate OU model fit
zscore_train            Z-score standardization using training period
                        statistics
