org.apache.mahout.classifier.naivebayes.trainer
Class NaiveBayesSumReducer

java.lang.Object
  extended by org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.WritableComparable<?>,VectorWritable,org.apache.hadoop.io.WritableComparable<?>,VectorWritable>
      extended by org.apache.mahout.classifier.naivebayes.trainer.NaiveBayesSumReducer

public class NaiveBayesSumReducer
extends org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.WritableComparable<?>,VectorWritable,org.apache.hadoop.io.WritableComparable<?>,VectorWritable>

Can also be used as a local Combiner. This accumulates all the features and the weights and sums them up.


Nested Class Summary
 
Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Reducer
org.apache.hadoop.mapreduce.Reducer.Context
 
Constructor Summary
NaiveBayesSumReducer()
           
 
Method Summary
protected  void reduce(org.apache.hadoop.io.WritableComparable<?> key, java.lang.Iterable<VectorWritable> values, org.apache.hadoop.mapreduce.Reducer.Context context)
           
 
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

NaiveBayesSumReducer

public NaiveBayesSumReducer()
Method Detail

reduce

protected void reduce(org.apache.hadoop.io.WritableComparable<?> key,
                      java.lang.Iterable<VectorWritable> values,
                      org.apache.hadoop.mapreduce.Reducer.Context context)
               throws java.io.IOException,
                      java.lang.InterruptedException
Overrides:
reduce in class org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.WritableComparable<?>,VectorWritable,org.apache.hadoop.io.WritableComparable<?>,VectorWritable>
Throws:
java.io.IOException
java.lang.InterruptedException


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