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<div class="subTitle">org.apache.mahout.math.hadoop.decomposer</div>
<h2 title="Class HdfsBackedLanczosState" class="title">Class HdfsBackedLanczosState</h2>
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<li><a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true" title="class or interface in org.apache.mahout.math.decomposer.lanczos">org.apache.mahout.math.decomposer.lanczos.LanczosState</a></li>
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<li>org.apache.mahout.math.hadoop.decomposer.HdfsBackedLanczosState</li>
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<dt>All Implemented Interfaces:</dt>
<dd>org.apache.hadoop.conf.Configurable</dd>
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<pre>public class <span class="typeNameLabel">HdfsBackedLanczosState</span>
extends <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true" title="class or interface in org.apache.mahout.math.decomposer.lanczos">LanczosState</a>
implements org.apache.hadoop.conf.Configurable</pre>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>static <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/decomposer/HdfsBackedLanczosState.html#BASIS_PREFIX">BASIS_PREFIX</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/decomposer/HdfsBackedLanczosState.html#SINGULAR_PREFIX">SINGULAR_PREFIX</a></span></code>&nbsp;</td>
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<h3>Fields inherited from class&nbsp;org.apache.mahout.math.decomposer.lanczos.<a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true" title="class or interface in org.apache.mahout.math.decomposer.lanczos">LanczosState</a></h3>
<code><a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#basis" title="class or interface in org.apache.mahout.math.decomposer.lanczos">basis</a>, <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#corpus" title="class or interface in org.apache.mahout.math.decomposer.lanczos">corpus</a>, <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#desiredRank" title="class or interface in org.apache.mahout.math.decomposer.lanczos">desiredRank</a>, <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#diagonalMatrix" title="class or interface in org.apache.mahout.math.decomposer.lanczos">diagonalMatrix</a>, <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#iterationNumber" title="class or interface in org.apache.mahout.math.decomposer.lanczos">iterationNumber</a>, <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#scaleFactor" title="class or interface in org.apache.mahout.math.decomposer.lanczos">scaleFactor</a>, <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#singularValues" title="class or interface in org.apache.mahout.math.decomposer.lanczos">singularValues</a>, <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#singularVectors" title="class or interface in org.apache.mahout.math.decomposer.lanczos">singularVectors</a></code></li>
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<tr class="altColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/decomposer/HdfsBackedLanczosState.html#HdfsBackedLanczosState-org.apache.mahout.math.VectorIterable-int-org.apache.mahout.math.Vector-org.apache.hadoop.fs.Path-">HdfsBackedLanczosState</a></span>(<a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/VectorIterable.html?is-external=true" title="class or interface in org.apache.mahout.math">VectorIterable</a>&nbsp;corpus,
int&nbsp;desiredRank,
<a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Vector.html?is-external=true" title="class or interface in org.apache.mahout.math">Vector</a>&nbsp;initialVector,
org.apache.hadoop.fs.Path&nbsp;dir)</code>&nbsp;</td>
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<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code>protected <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Vector.html?is-external=true" title="class or interface in org.apache.mahout.math">Vector</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/decomposer/HdfsBackedLanczosState.html#fetchVector-org.apache.hadoop.fs.Path-int-">fetchVector</a></span>(org.apache.hadoop.fs.Path&nbsp;p,
int&nbsp;keyIndex)</code>&nbsp;</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Vector.html?is-external=true" title="class or interface in org.apache.mahout.math">Vector</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/decomposer/HdfsBackedLanczosState.html#getBasisVector-int-">getBasisVector</a></span>(int&nbsp;i)</code>&nbsp;</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>org.apache.hadoop.conf.Configuration</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/decomposer/HdfsBackedLanczosState.html#getConf--">getConf</a></span>()</code>&nbsp;</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Matrix.html?is-external=true" title="class or interface in org.apache.mahout.math">Matrix</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/decomposer/HdfsBackedLanczosState.html#getDiagonalMatrix--">getDiagonalMatrix</a></span>()</code>&nbsp;</td>
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<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Vector.html?is-external=true" title="class or interface in org.apache.mahout.math">Vector</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/decomposer/HdfsBackedLanczosState.html#getRightSingularVector-int-">getRightSingularVector</a></span>(int&nbsp;i)</code>&nbsp;</td>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/decomposer/HdfsBackedLanczosState.html#getScaleFactor--">getScaleFactor</a></span>()</code>&nbsp;</td>
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<tr id="i6" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/decomposer/HdfsBackedLanczosState.html#persistVector-org.apache.hadoop.fs.Path-int-org.apache.mahout.math.Vector-">persistVector</a></span>(org.apache.hadoop.fs.Path&nbsp;p,
int&nbsp;key,
<a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Vector.html?is-external=true" title="class or interface in org.apache.mahout.math">Vector</a>&nbsp;vector)</code>&nbsp;</td>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/decomposer/HdfsBackedLanczosState.html#setConf-org.apache.hadoop.conf.Configuration-">setConf</a></span>(org.apache.hadoop.conf.Configuration&nbsp;configuration)</code>&nbsp;</td>
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<tr id="i8" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/decomposer/HdfsBackedLanczosState.html#setIterationNumber-int-">setIterationNumber</a></span>(int&nbsp;i)</code>&nbsp;</td>
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<tr id="i9" class="rowColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/decomposer/HdfsBackedLanczosState.html#updateHdfsState--">updateHdfsState</a></span>()</code>&nbsp;</td>
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<h3>Methods inherited from class&nbsp;org.apache.mahout.math.decomposer.lanczos.<a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true" title="class or interface in org.apache.mahout.math.decomposer.lanczos">LanczosState</a></h3>
<code><a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#getBasisSize--" title="class or interface in org.apache.mahout.math.decomposer.lanczos">getBasisSize</a>, <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#getCorpus--" title="class or interface in org.apache.mahout.math.decomposer.lanczos">getCorpus</a>, <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#getIterationNumber--" title="class or interface in org.apache.mahout.math.decomposer.lanczos">getIterationNumber</a>, <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#getSingularValue-int-" title="class or interface in org.apache.mahout.math.decomposer.lanczos">getSingularValue</a>, <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#setBasisVector-int-org.apache.mahout.math.Vector-" title="class or interface in org.apache.mahout.math.decomposer.lanczos">setBasisVector</a>, <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#setRightSingularVector-int-org.apache.mahout.math.Vector-" title="class or interface in org.apache.mahout.math.decomposer.lanczos">setRightSingularVector</a>, <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#setScaleFactor-double-" title="class or interface in org.apache.mahout.math.decomposer.lanczos">setScaleFactor</a>, <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#setSingularValue-int-double-" title="class or interface in org.apache.mahout.math.decomposer.lanczos">setSingularValue</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<pre>public static final&nbsp;<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> BASIS_PREFIX</pre>
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<dt><span class="seeLabel">See Also:</span></dt>
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<pre>public static final&nbsp;<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> SINGULAR_PREFIX</pre>
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<dt><span class="seeLabel">See Also:</span></dt>
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<h4>HdfsBackedLanczosState</h4>
<pre>public&nbsp;HdfsBackedLanczosState(<a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/VectorIterable.html?is-external=true" title="class or interface in org.apache.mahout.math">VectorIterable</a>&nbsp;corpus,
int&nbsp;desiredRank,
<a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Vector.html?is-external=true" title="class or interface in org.apache.mahout.math">Vector</a>&nbsp;initialVector,
org.apache.hadoop.fs.Path&nbsp;dir)</pre>
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<h4>setConf</h4>
<pre>public&nbsp;void&nbsp;setConf(org.apache.hadoop.conf.Configuration&nbsp;configuration)</pre>
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<dd><code>setConf</code>&nbsp;in interface&nbsp;<code>org.apache.hadoop.conf.Configurable</code></dd>
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<pre>public&nbsp;org.apache.hadoop.conf.Configuration&nbsp;getConf()</pre>
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<dd><code>getConf</code>&nbsp;in interface&nbsp;<code>org.apache.hadoop.conf.Configurable</code></dd>
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<pre>public&nbsp;void&nbsp;setIterationNumber(int&nbsp;i)</pre>
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<dd><code><a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#setIterationNumber-int-" title="class or interface in org.apache.mahout.math.decomposer.lanczos">setIterationNumber</a></code>&nbsp;in class&nbsp;<code><a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true" title="class or interface in org.apache.mahout.math.decomposer.lanczos">LanczosState</a></code></dd>
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<pre>protected&nbsp;void&nbsp;updateHdfsState()
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<pre>protected&nbsp;void&nbsp;persistVector(org.apache.hadoop.fs.Path&nbsp;p,
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throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
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<pre>protected&nbsp;<a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Vector.html?is-external=true" title="class or interface in org.apache.mahout.math">Vector</a>&nbsp;fetchVector(org.apache.hadoop.fs.Path&nbsp;p,
int&nbsp;keyIndex)
throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
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<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>public&nbsp;<a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Vector.html?is-external=true" title="class or interface in org.apache.mahout.math">Vector</a>&nbsp;getBasisVector(int&nbsp;i)</pre>
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<dd><code><a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#getBasisVector-int-" title="class or interface in org.apache.mahout.math.decomposer.lanczos">getBasisVector</a></code>&nbsp;in class&nbsp;<code><a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true" title="class or interface in org.apache.mahout.math.decomposer.lanczos">LanczosState</a></code></dd>
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<h4>getRightSingularVector</h4>
<pre>public&nbsp;<a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Vector.html?is-external=true" title="class or interface in org.apache.mahout.math">Vector</a>&nbsp;getRightSingularVector(int&nbsp;i)</pre>
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<dd><code><a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#getRightSingularVector-int-" title="class or interface in org.apache.mahout.math.decomposer.lanczos">getRightSingularVector</a></code>&nbsp;in class&nbsp;<code><a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true" title="class or interface in org.apache.mahout.math.decomposer.lanczos">LanczosState</a></code></dd>
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<pre>public&nbsp;double&nbsp;getScaleFactor()</pre>
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<pre>public&nbsp;<a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Matrix.html?is-external=true" title="class or interface in org.apache.mahout.math">Matrix</a>&nbsp;getDiagonalMatrix()</pre>
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<dd><code><a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true#getDiagonalMatrix--" title="class or interface in org.apache.mahout.math.decomposer.lanczos">getDiagonalMatrix</a></code>&nbsp;in class&nbsp;<code><a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/decomposer/lanczos/LanczosState.html?is-external=true" title="class or interface in org.apache.mahout.math.decomposer.lanczos">LanczosState</a></code></dd>
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