trix/operators/UnaryOperator.html" title="class in org.apache.sysds.runtime.matrix.operators">UnaryOperator</a>&nbsp;op,
                              double[]&nbsp;reference)</pre>
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<h4>outerProduct</h4>
<pre class="methodSignature">static&nbsp;void&nbsp;outerProduct&#8203;(double[]&nbsp;leftRowSum,
                         double[]&nbsp;rightColumnSum,
                        