Implementation and Workflows for INLA-Based Approximate Bayesian Structural Equation Modelling

Fuente: arXiv
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Autores principales: Jamil, Haziq, Rue, Håvard
Formato: Preprint
Publicado: 2026
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author Jamil, Haziq
Rue, Håvard
author_facet Jamil, Haziq
Rue, Håvard
contents Bayesian structural equation modelling (BSEM) offers many advantages such as principled uncertainty quantification, small-sample regularisation, and flexible model specification. However, the Markov chain Monte Carlo (MCMC) methods on which it relies are computationally prohibitive for the iterative cycle of specification, criticism, and refinement that careful psychometric practice demands. We present INLAvaan, an R package for fast, approximate Bayesian SEM built around the Integrated Nested Laplace Approximation (INLA) framework for structural equation models developed by Jamil & Rue (2026, arXiv:2603.25690 [stat.ME]). This paper serves as a companion manuscript that describes the architectural decisions and computational strategies underlying the package. Two substantive applications -- a 256-parameter bifactor circumplex model and a multilevel mediation model with full-information missing-data handling -- demonstrate the approach on specifications where MCMC would require hours of run time and careful convergence work. In constrast, INLAvaan delivers calibrated posterior summaries in seconds.
format Preprint
id arxiv_https___arxiv_org_abs_2604_00671
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Implementation and Workflows for INLA-Based Approximate Bayesian Structural Equation Modelling
Jamil, Haziq
Rue, Håvard
Computation
Bayesian structural equation modelling (BSEM) offers many advantages such as principled uncertainty quantification, small-sample regularisation, and flexible model specification. However, the Markov chain Monte Carlo (MCMC) methods on which it relies are computationally prohibitive for the iterative cycle of specification, criticism, and refinement that careful psychometric practice demands. We present INLAvaan, an R package for fast, approximate Bayesian SEM built around the Integrated Nested Laplace Approximation (INLA) framework for structural equation models developed by Jamil & Rue (2026, arXiv:2603.25690 [stat.ME]). This paper serves as a companion manuscript that describes the architectural decisions and computational strategies underlying the package. Two substantive applications -- a 256-parameter bifactor circumplex model and a multilevel mediation model with full-information missing-data handling -- demonstrate the approach on specifications where MCMC would require hours of run time and careful convergence work. In constrast, INLAvaan delivers calibrated posterior summaries in seconds.
title Implementation and Workflows for INLA-Based Approximate Bayesian Structural Equation Modelling
topic Computation
url https://arxiv.org/abs/2604.00671