qbrms_emmeans

Compute estimated marginal means (least-squares means) for factor terms
and their combinations for a <code>qbrms_fit</code>, using a multivariate-normal
approximation to the posterior of the fixed effects.

Provides a 'brms'-like interface for fitting Bayesian regression models
using 'INLA' (Integrated Nested Laplace Approximations) and 'TMB' (Template Model Builder).
The package offers faster model fitting while maintaining familiar 'brms' syntax and
output formats. Supports fixed and mixed effects models, multiple probability distributions,
conditional effects plots, and posterior predictive checks with summary methods compatible
with 'brms'. 'TMB' integration provides fast ordinal regression capabilities. Implements
methods adapted from 'emmeans' for marginal means estimation and 'bayestestR' for Bayesian
inference assessment. Methods are based on Rue et al. (2009) <doi:10.1111/j.1467-9868.2008.00700.x>,
Kristensen et al. (2016) <doi:10.18637/jss.v070.i05>, Lenth (2016) <doi:10.18637/jss.v069.i01>,
Bürkner (2017) <doi:10.18637/jss.v080.i01>, Makowski et al. (2019) <doi:10.21105/joss.01541>,
and Kruschke (2014, ISBN:9780124058880).

Tony Myers

qbrms

Quick Bayesian Regression Models Using 'INLA' with 'brms' Syntax

qbrms_emmeans function

<dl><dt>object</dt>
<dd>A <code>qbrms_fit</code>.</dd>
<dt>specs</dt>
<dd>Character vector naming factor(s) for EMMs, or a string
containing a formula with a right-hand side (for example, <code>"~ group"</code>
or <code>"y ~ group"</code>). If multiple terms are provided, a full grid is used.</dd>
<dt>at</dt>
<dd>Optional named list giving values at which to hold other predictors.
Numerics are fixed at their means if not supplied; factors at their modal level.</dd>
<dt>nsim</dt>
<dd>Number of posterior draws for uncertainty.</dd>
<dt>prob</dt>
<dd>Interval mass (default 0.95).</dd>
<dt>...</dt>
<dd>Additional arguments (currently not used).</dd></dl>

Arguments

Estimated Marginal Means for qbrms models — qbrms_emmeans

<dl>

<dt>object</dt>
<dd>A <code>qbrms_fit</code>.</dd>


<dt>specs</dt>
<dd>Character vector naming factor(s) for EMMs, or a string
containing a formula with a right-hand side (for example, <code>"~ group"</code>
or <code>"y ~ group"</code>). If multiple terms are provided, a full grid is used.</dd>


<dt>at</dt>
<dd>Optional named list giving values at which to hold other predictors.
Numerics are fixed at their means if not supplied; factors at their modal level.</dd>


<dt>nsim</dt>
<dd>Number of posterior draws for uncertainty.</dd>


<dt>prob</dt>
<dd>Interval mass (default 0.95).</dd>


<dt>...</dt>
<dd>Additional arguments (currently not used).</dd>

</dl>

qbrms_emmeans: Estimated Marginal Means for qbrms models

Description

Usage

Value

Arguments