eturns the number of instances in the
 hyper-spherical region of this node.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>The number of instances in the
 node.</dd></dl>
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<h4>calcCentroidPivot</h4>
<pre>public static&nbsp;<a href="../../../../weka/core/Instance.html" title="class in weka.core">Instance</a>&nbsp;calcCentroidPivot(int[]&nbsp;instList,
                 