Changelog

Source: NEWS.md

BayesianEFA 0.1.0

• Initial CRAN release.

Features

• Bayesian Exploratory Factor Analysis via Hamiltonian Monte Carlo (Stan).
• Three model parameterizations: correlation ("cor"), covariance ("cov"), and full unstandardized ("raw").
• Unit-vector prior for factor loadings ensuring valid variance partitioning and Heywood case prevention (Rey-Sáez et al., 2025).
• RSP alignment algorithm with Varimax rotation for resolving rotational indeterminacy across MCMC draws.
• Full Information Maximum Likelihood (FIML) for missing data handling.
• Bayesian fit indices: BRMSEA, BCFI, BTLI, SRMR, Chi-squared with posterior predictive p-value, and PSIS-LOO cross-validation.
• Omega reliability coefficients (total and subscale) with full posterior uncertainty quantification.
• Bayesian factor scores with posterior distributions.
• Dual backend support: rstan and cmdstanr.
• Efficient C++ implementations (RcppArmadillo) for the RSP algorithm and factor score computation.