org.apache.mahout.math.hadoop.similarity.cooccurrence
Class RowSimilarityJob.SumObservationsReducer

java.lang.Object
  extended by org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.NullWritable,VectorWritable,org.apache.hadoop.io.NullWritable,VectorWritable>
      extended by org.apache.mahout.math.hadoop.similarity.cooccurrence.RowSimilarityJob.SumObservationsReducer
Enclosing class:
RowSimilarityJob

public static class RowSimilarityJob.SumObservationsReducer
extends org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.NullWritable,VectorWritable,org.apache.hadoop.io.NullWritable,VectorWritable>


Nested Class Summary
 
Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Reducer
org.apache.hadoop.mapreduce.Reducer.Context
 
Constructor Summary
RowSimilarityJob.SumObservationsReducer()
           
 
Method Summary
protected  void reduce(org.apache.hadoop.io.NullWritable nullWritable, Iterable<VectorWritable> partialVectors, org.apache.hadoop.mapreduce.Reducer.Context ctx)
           
 
Methods inherited from class org.apache.hadoop.mapreduce.Reducer
cleanup, run, setup
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

RowSimilarityJob.SumObservationsReducer

public RowSimilarityJob.SumObservationsReducer()
Method Detail

reduce

protected void reduce(org.apache.hadoop.io.NullWritable nullWritable,
                      Iterable<VectorWritable> partialVectors,
                      org.apache.hadoop.mapreduce.Reducer.Context ctx)
               throws IOException,
                      InterruptedException
Overrides:
reduce in class org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.NullWritable,VectorWritable,org.apache.hadoop.io.NullWritable,VectorWritable>
Throws:
IOException
InterruptedException


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