e>, it returns only the aggregation matrix
of the unbalanced hierarchy. <em>Default</em> is <code>FALSE</code>.</p></dd>


<dt>sparse</dt>
<dd><p>Option to return sparse matrices (<em>default</em> is <code>TRUE</code>).</p></dd>

</dl></div>
    <div class="section level2">
    <h2 id="value">Value<a class="anchor" aria-label="anchor" href="#value"></a></h2>
    

<p>A list containing four
elements (<code>more_info = TRUE</code>):</p>
<dl><dt>ubm</dt>
<dd><p>The aggregation matrix of the unbalanced hierarch