rg-lower">lower<a class="anchor" aria-label="anchor" href="#arg-lower"></a></dt>
<dd><p>the lower bound that determines what is ambiguous</p></dd>


<dt id="arg-upper">upper<a class="anchor" aria-label="anchor" href="#arg-upper"></a></dt>
<dd><p>the upper bound that determines what is ambiguous</p></dd>

</dl></div>
    <div class="section level2">
    <h2 id="value">Value<a class="anchor" aria-label="anchor" href="#value"></a></h2>
    <p>the PAC is a score used in clustering performance. The lower it is
t