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| <h2 title="Class AffinityMatrixInputReducer" class="title">Class AffinityMatrixInputReducer</h2> |
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| <li>org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.IntWritable,<a href="../../../../../org/apache/mahout/math/hadoop/DistributedRowMatrix.MatrixEntryWritable.html" title="class in org.apache.mahout.math.hadoop">DistributedRowMatrix.MatrixEntryWritable</a>,org.apache.hadoop.io.IntWritable,<a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/VectorWritable.html?is-external=true" title="class or interface in org.apache.mahout.math">VectorWritable</a>></li> |
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| <pre>public class <span class="typeNameLabel">AffinityMatrixInputReducer</span> |
| extends org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.IntWritable,<a href="../../../../../org/apache/mahout/math/hadoop/DistributedRowMatrix.MatrixEntryWritable.html" title="class in org.apache.mahout.math.hadoop">DistributedRowMatrix.MatrixEntryWritable</a>,org.apache.hadoop.io.IntWritable,<a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/VectorWritable.html?is-external=true" title="class or interface in org.apache.mahout.math">VectorWritable</a>></pre> |
| <div class="block">Tasked with taking each DistributedRowMatrix entry and collecting them |
| into vectors corresponding to rows. The input and output keys are the same, |
| corresponding to the row in the ensuing matrix. The matrix entries are |
| entered into a vector according to the column to which they belong, and |
| the vector is then given the key corresponding to its row.</div> |
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| <code>org.apache.hadoop.mapreduce.Reducer.Context</code></li> |
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| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/clustering/spectral/AffinityMatrixInputReducer.html#reduce-org.apache.hadoop.io.IntWritable-java.lang.Iterable-org.apache.hadoop.mapreduce.Reducer.Context-">reduce</a></span>(org.apache.hadoop.io.IntWritable row, |
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| org.apache.hadoop.mapreduce.Reducer.Context context)</code> </td> |
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| <h4>AffinityMatrixInputReducer</h4> |
| <pre>public AffinityMatrixInputReducer()</pre> |
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| <h4>reduce</h4> |
| <pre>protected void reduce(org.apache.hadoop.io.IntWritable row, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><<a href="../../../../../org/apache/mahout/math/hadoop/DistributedRowMatrix.MatrixEntryWritable.html" title="class in org.apache.mahout.math.hadoop">DistributedRowMatrix.MatrixEntryWritable</a>> values, |
| org.apache.hadoop.mapreduce.Reducer.Context context) |
| 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>, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></pre> |
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