prior_beta: Beta prior

In tulpa: Templated Unified Library for Posterior Approximation in Bayesian Hierarchical Models

Beta prior

Description

Specify a beta prior for a parameter bounded in (0, 1).

Usage

prior_beta(alpha = 1, beta = 1)

Arguments

alpha	First shape parameter. Must be positive.
beta	Second shape parameter. Must be positive.

Details

• alpha = beta = 1: Uniform(0, 1)

• alpha = beta = 2: Symmetric, peaked at 0.5

• alpha > beta: Skewed toward 1

• alpha < beta: Skewed toward 0

Value

A tulpa_prior object

Examples

prior_beta(1, 1)   # Uniform
prior_beta(2, 2)   # Symmetric, centered at 0.5
prior_beta(5, 2)   # Skewed toward 1 (for high autocorrelation)

tulpa documentation built on Oct. 19, 2026, 5:09 p.m.