weka.distributed.hadoop

Class WekaFoldBasedClassifierHadoopReducer

java.lang.Object

org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.Text,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>

weka.distributed.hadoop.WekaClassifierHadoopReducer

weka.distributed.hadoop.WekaFoldBasedClassifierHadoopReducer

public class WekaFoldBasedClassifierHadoopReducer
extends WekaClassifierHadoopReducer

Reducer implementation for the model-building phase of the evaluation job. Subclasses WekaClassifierHadoopReducer in order to reduce keyed on fold number.

Version:

$Revision: 11094 $

Author:

Mark Hall (mhall{[at]}pentaho{[dot]}com)

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Reducer

org.apache.hadoop.mapreduce.Reducer.Context

Field Summary

Fields inherited from class weka.distributed.hadoop.WekaClassifierHadoopReducer

CLASSIFIER_WRITE_PATH, MIN_TRAINING_FRACTION, SUPPRESS_CLASSIFIER_TEXT_OUT

Constructor Summary

Constructors

Constructor and Description
WekaFoldBasedClassifierHadoopReducer()

Method Summary

Methods

Modifier and Type	Method and Description
void	reduce(org.apache.hadoop.io.Text key, java.lang.Iterable<org.apache.hadoop.io.BytesWritable> values, org.apache.hadoop.mapreduce.Reducer.Context context)

Methods inherited from class weka.distributed.hadoop.WekaClassifierHadoopReducer

setup

Methods inherited from class org.apache.hadoop.mapreduce.Reducer

run

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

WekaFoldBasedClassifierHadoopReducer

public WekaFoldBasedClassifierHadoopReducer()

Method Detail

reduce

public void reduce(org.apache.hadoop.io.Text key,
          java.lang.Iterable<org.apache.hadoop.io.BytesWritable> values,
          org.apache.hadoop.mapreduce.Reducer.Context context)
            throws java.io.IOException

Overrides:

reduce in class WekaClassifierHadoopReducer

Throws:

java.io.IOException