Posterior Exploration and Publication Graphics

Python-facing port of posterior-exploration-and-graphics.Rmd from the frozen R gp3bayes 0.5.0 reference. The statistical and governance framing below follows the canonical vignette; executable Python workflows use the mapped APIs listed later.

gp3bayespy separates numerical posterior summaries from graphics. The same posterior draw matrix can therefore be inspected, tabulated, and plotted without changing the fitted model or its contract.

Backend-independent posterior tables

Publication graphics

The plotting functions return ordinary plotting objects. They do not alter posterior draws, set decision thresholds, or turn interval exclusion into an automatic substantive conclusion.

Fitted-model extraction

For an approved fitted model, the post-fit API standardises extraction through the posterior package:

Diagnostic flags request inspection. Their absence is not encoded as proof of model adequacy.

Python API mapping

• gp3bayespy.extract_posterior_draws
• gp3bayespy.mcmc_diagnostic_table
• gp3bayespy.plot_autocorrelation
• gp3bayespy.plot_mcmc_quality
• gp3bayespy.plot_posterior_areas
• gp3bayespy.plot_posterior_intervals
• gp3bayespy.plot_rank_diagnostics
• gp3bayespy.plot_sampler_diagnostics
• gp3bayespy.posterior_correlation_table
• gp3bayespy.posterior_interval_table
• gp3bayespy.posterior_probability_table
• gp3bayespy.sampler_diagnostic_table
• gp3bayespy.summarise_mcmc_quality

Python usage

import gp3bayespy as gp

# All functions listed above are available from the package root.
# Use help(gp.<function>) or the API reference for the exact Python signature.

Visual companion

These figures complement the canonical ported narrative and are generated from package functions.

Posterior intervals. Deterministic visual companion generated from the Python package.

Posterior density. Deterministic visual companion generated from the Python package.

Posterior correlations. Deterministic visual companion generated from the Python package.

The figures remain descriptive evidence and do not create automatic inferential decisions.