org.apache.mahout.math.hadoop.similarity.cooccurrence

Class RowSimilarityJob.SumObservationsReducer

java.lang.Object

org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.NullWritable,VectorWritable,org.apache.hadoop.io.NullWritable,VectorWritable>

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

Constructors

Constructor and Description
SumObservationsReducer()

Method Summary

Modifier and Type	Method and Description
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

SumObservationsReducer

public 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