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<h2 title="Class SparsityEstimator" class="title">Class SparsityEstimator</h2>
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<pre>public abstract class <span class="typeNameLabel">SparsityEstimator</span>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
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<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/hops/estim/SparsityEstimator.OpCode.html" title="enum in org.apache.sysds.hops.estim">SparsityEstimator.OpCode</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/hops/estim/SparsityEstimator.html#MIN_PAR_THRESHOLD">MIN_PAR_THRESHOLD</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>static boolean</code></td>
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<td class="colFirst"><code>static boolean</code></td>
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<td class="colFirst"><code>abstract double</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/hops/estim/SparsityEstimator.html#estim-org.apache.sysds.runtime.matrix.data.MatrixBlock-org.apache.sysds.runtime.matrix.data.MatrixBlock-">estim</a></span>(<a href="../../../../../org/apache/sysds/runtime/matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;m1,
<a href="../../../../../org/apache/sysds/runtime/matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;m2)</code>
<div class="block">Estimates the output sparsity for a single matrix multiplication.</div>
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<td class="colFirst"><code>abstract double</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/hops/estim/SparsityEstimator.html#estim-org.apache.sysds.runtime.matrix.data.MatrixBlock-org.apache.sysds.runtime.matrix.data.MatrixBlock-org.apache.sysds.hops.estim.SparsityEstimator.OpCode-">estim</a></span>(<a href="../../../../../org/apache/sysds/runtime/matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;m1,
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<div class="block">Estimates the output sparsity for a given binary operation.</div>
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<td class="colFirst"><code>abstract double</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/hops/estim/SparsityEstimator.html#estim-org.apache.sysds.runtime.matrix.data.MatrixBlock-org.apache.sysds.hops.estim.SparsityEstimator.OpCode-">estim</a></span>(<a href="../../../../../org/apache/sysds/runtime/matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;m,
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<div class="block">Estimates the output sparsity for a given unary operation.</div>
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<td class="colFirst"><code>abstract <a href="../../../../../org/apache/sysds/runtime/meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/hops/estim/SparsityEstimator.html#estim-org.apache.sysds.hops.estim.MMNode-">estim</a></span>(<a href="../../../../../org/apache/sysds/hops/estim/MMNode.html" title="class in org.apache.sysds.hops.estim">MMNode</a>&nbsp;root)</code>
<div class="block">Estimates the output sparsity of a DAG of matrix multiplications
for the given operator graph of a single root node.</div>
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<pre>public static final&nbsp;int MIN_PAR_THRESHOLD</pre>
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<dd><a href="../../../../../constant-values.html#org.apache.sysds.hops.estim.SparsityEstimator.MIN_PAR_THRESHOLD">Constant Field Values</a></dd>
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<pre>public&nbsp;SparsityEstimator()</pre>
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<h4>estim</h4>
<pre>public abstract&nbsp;<a href="../../../../../org/apache/sysds/runtime/meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;estim(<a href="../../../../../org/apache/sysds/hops/estim/MMNode.html" title="class in org.apache.sysds.hops.estim">MMNode</a>&nbsp;root)</pre>
<div class="block">Estimates the output sparsity of a DAG of matrix multiplications
for the given operator graph of a single root node.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>root</code> - DAG root node</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>output data characteristics</dd>
</dl>
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<h4>estim</h4>
<pre>public abstract&nbsp;double&nbsp;estim(<a href="../../../../../org/apache/sysds/runtime/matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;m1,
<a href="../../../../../org/apache/sysds/runtime/matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;m2)</pre>
<div class="block">Estimates the output sparsity for a single matrix multiplication.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>m1</code> - left-hand-side operand</dd>
<dd><code>m2</code> - right-hand-side operand</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>sparsity</dd>
</dl>
</li>
</ul>
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<h4>estim</h4>
<pre>public abstract&nbsp;double&nbsp;estim(<a href="../../../../../org/apache/sysds/runtime/matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;m1,
<a href="../../../../../org/apache/sysds/runtime/matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;m2,
<a href="../../../../../org/apache/sysds/hops/estim/SparsityEstimator.OpCode.html" title="enum in org.apache.sysds.hops.estim">SparsityEstimator.OpCode</a>&nbsp;op)</pre>
<div class="block">Estimates the output sparsity for a given binary operation.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>m1</code> - left-hand-side operand</dd>
<dd><code>m2</code> - right-hand-side operand</dd>
<dd><code>op</code> - operator code</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>sparsity</dd>
</dl>
</li>
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<pre>public abstract&nbsp;double&nbsp;estim(<a href="../../../../../org/apache/sysds/runtime/matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;m,
<a href="../../../../../org/apache/sysds/hops/estim/SparsityEstimator.OpCode.html" title="enum in org.apache.sysds.hops.estim">SparsityEstimator.OpCode</a>&nbsp;op)</pre>
<div class="block">Estimates the output sparsity for a given unary operation.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>m</code> - left-hand-side operand</dd>
<dd><code>op</code> - operator code</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>sparsity</dd>
</dl>
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