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| <h2 title="Class DistributedConjugateGradientSolver" class="title">Class DistributedConjugateGradientSolver</h2> |
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| <li><a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/solver/ConjugateGradientSolver.html?is-external=true" title="class or interface in org.apache.mahout.math.solver">org.apache.mahout.math.solver.ConjugateGradientSolver</a></li> |
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| <li>org.apache.mahout.math.hadoop.solver.DistributedConjugateGradientSolver</li> |
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| <dd>org.apache.hadoop.conf.Configurable, org.apache.hadoop.util.Tool</dd> |
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| <pre>public class <span class="typeNameLabel">DistributedConjugateGradientSolver</span> |
| extends <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/solver/ConjugateGradientSolver.html?is-external=true" title="class or interface in org.apache.mahout.math.solver">ConjugateGradientSolver</a> |
| implements org.apache.hadoop.util.Tool</pre> |
| <div class="block">Distributed implementation of the conjugate gradient solver. More or less, this is just the standard solver |
| but wrapped with some methods that make it easy to run it on a DistributedRowMatrix.</div> |
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| <td class="colFirst"><code>class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/solver/DistributedConjugateGradientSolver.DistributedConjugateGradientSolverJob.html" title="class in org.apache.mahout.math.hadoop.solver">DistributedConjugateGradientSolver.DistributedConjugateGradientSolverJob</a></span></code> </td> |
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| <h3>Fields inherited from class org.apache.mahout.math.solver.<a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/solver/ConjugateGradientSolver.html?is-external=true" title="class or interface in org.apache.mahout.math.solver">ConjugateGradientSolver</a></h3> |
| <code><a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/solver/ConjugateGradientSolver.html?is-external=true#DEFAULT_MAX_ERROR" title="class or interface in org.apache.mahout.math.solver">DEFAULT_MAX_ERROR</a></code></li> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/solver/DistributedConjugateGradientSolver.html#DistributedConjugateGradientSolver--">DistributedConjugateGradientSolver</a></span>()</code> </td> |
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| <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/solver/DistributedConjugateGradientSolver.html#getConf--">getConf</a></span>()</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/mahout/math/hadoop/solver/DistributedConjugateGradientSolver.DistributedConjugateGradientSolverJob.html" title="class in org.apache.mahout.math.hadoop.solver">DistributedConjugateGradientSolver.DistributedConjugateGradientSolverJob</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/solver/DistributedConjugateGradientSolver.html#job--">job</a></span>()</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/solver/DistributedConjugateGradientSolver.html#main-java.lang.String:A-">main</a></span>(<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>[] args)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/solver/DistributedConjugateGradientSolver.html#run-java.lang.String:A-">run</a></span>(<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>[] strings)</code> </td> |
| </tr> |
| <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/solver/DistributedConjugateGradientSolver.html#runJob-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-int-int-org.apache.mahout.math.Vector-org.apache.mahout.math.solver.Preconditioner-int-double-">runJob</a></span>(org.apache.hadoop.fs.Path inputPath, |
| org.apache.hadoop.fs.Path tempPath, |
| int numRows, |
| int numCols, |
| <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> b, |
| <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/solver/Preconditioner.html?is-external=true" title="class or interface in org.apache.mahout.math.solver">Preconditioner</a> preconditioner, |
| int maxIterations, |
| double maxError)</code> |
| <div class="block">Runs the distributed conjugate gradient solver programmatically to solve the system (A + lambda*I)x = b.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/math/hadoop/solver/DistributedConjugateGradientSolver.html#setConf-org.apache.hadoop.conf.Configuration-">setConf</a></span>(org.apache.hadoop.conf.Configuration conf)</code> </td> |
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| <h3>Methods inherited from class org.apache.mahout.math.solver.<a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/solver/ConjugateGradientSolver.html?is-external=true" title="class or interface in org.apache.mahout.math.solver">ConjugateGradientSolver</a></h3> |
| <code><a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/solver/ConjugateGradientSolver.html?is-external=true#getIterations--" title="class or interface in org.apache.mahout.math.solver">getIterations</a>, <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/solver/ConjugateGradientSolver.html?is-external=true#getResidualNorm--" title="class or interface in org.apache.mahout.math.solver">getResidualNorm</a>, <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/solver/ConjugateGradientSolver.html?is-external=true#solve-org.apache.mahout.math.VectorIterable-org.apache.mahout.math.Vector-" title="class or interface in org.apache.mahout.math.solver">solve</a>, <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/solver/ConjugateGradientSolver.html?is-external=true#solve-org.apache.mahout.math.VectorIterable-org.apache.mahout.math.Vector-org.apache.mahout.math.solver.Preconditioner-" title="class or interface in org.apache.mahout.math.solver">solve</a>, <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/solver/ConjugateGradientSolver.html?is-external=true#solve-org.apache.mahout.math.VectorIterable-org.apache.mahout.math.Vector-org.apache.mahout.math.solver.Preconditioner-int-double-" title="class or interface in org.apache.mahout.math.solver">solve</a></code></li> |
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| <h4>DistributedConjugateGradientSolver</h4> |
| <pre>public DistributedConjugateGradientSolver()</pre> |
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| <a name="runJob-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-int-int-org.apache.mahout.math.Vector-org.apache.mahout.math.solver.Preconditioner-int-double-"> |
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| <pre>public <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> runJob(org.apache.hadoop.fs.Path inputPath, |
| org.apache.hadoop.fs.Path tempPath, |
| int numRows, |
| int numCols, |
| <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> b, |
| <a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/solver/Preconditioner.html?is-external=true" title="class or interface in org.apache.mahout.math.solver">Preconditioner</a> preconditioner, |
| int maxIterations, |
| double maxError)</pre> |
| <div class="block">Runs the distributed conjugate gradient solver programmatically to solve the system (A + lambda*I)x = b.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>inputPath</code> - Path to the matrix A</dd> |
| <dd><code>tempPath</code> - Path to scratch output path, deleted after the solver completes</dd> |
| <dd><code>numRows</code> - Number of rows in A</dd> |
| <dd><code>numCols</code> - Number of columns in A</dd> |
| <dd><code>b</code> - Vector b</dd> |
| <dd><code>preconditioner</code> - Optional preconditioner for the system</dd> |
| <dd><code>maxIterations</code> - Maximum number of iterations to run, defaults to numCols</dd> |
| <dd><code>maxError</code> - Maximum error tolerated in the result. If the norm of the residual falls below this, |
| then the algorithm stops and returns.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The vector that solves the system.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getConf--"> |
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| <h4>getConf</h4> |
| <pre>public org.apache.hadoop.conf.Configuration getConf()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>getConf</code> in interface <code>org.apache.hadoop.conf.Configurable</code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setConf-org.apache.hadoop.conf.Configuration-"> |
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| <h4>setConf</h4> |
| <pre>public void setConf(org.apache.hadoop.conf.Configuration conf)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>setConf</code> in interface <code>org.apache.hadoop.conf.Configurable</code></dd> |
| </dl> |
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| <h4>run</h4> |
| <pre>public int run(<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>[] strings) |
| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>run</code> in interface <code>org.apache.hadoop.util.Tool</code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="job--"> |
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| <h4>job</h4> |
| <pre>public <a href="../../../../../../org/apache/mahout/math/hadoop/solver/DistributedConjugateGradientSolver.DistributedConjugateGradientSolverJob.html" title="class in org.apache.mahout.math.hadoop.solver">DistributedConjugateGradientSolver.DistributedConjugateGradientSolverJob</a> job()</pre> |
| </li> |
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