Declared Priors versus Fitted Posteriors

The bridge uses the backend-independent prior specification retained by gp3bayes; saved backend prior draws are not required.

bridge <- prior_posterior_bridge(fit)

prior_posterior_summary_table(bridge)
prior_posterior_distance_table(bridge)

plot_prior_posterior_density(bridge)
plot_prior_posterior_intervals(bridge)
plot_prior_posterior_shift(bridge)
plot_prior_posterior_contraction(bridge)

Shift, contraction, interval overlap, Kolmogorov-Smirnov distance, and quantile-based Wasserstein distance are descriptive marginal summaries, not automatic measures of prior adequacy.