 double your speed by setting
<code>se = FALSE</code>. It is not recommended that you disable the
hierarchical shrinkage.</p>
<p>Due to sampling variability, the estimates sometime lie outside of the
theoretical boundaries of the parameters being estimated. In such cases,
we truncate the estimates at the boundary and return <code>NA</code> for the
standard errors.</p>
    </div>
    <div id="mathematical-formulation">
    <h2>Mathematical formulation</h2>
    

<p>Let</p><ul><li><p>\(r\) be the sample corre