weka.distributed.hadoop

Class WekaClassifierHadoopReducer

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

Direct Known Subclasses:

WekaFoldBasedClassifierHadoopReducer

public class WekaClassifierHadoopReducer
extends 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>

Nested Class Summary

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

org.apache.hadoop.mapreduce.Reducer.Context

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	CLASSIFIER_WRITE_PATH The key in the Configuration that the write path for the model is associated with
static java.lang.String	MIN_TRAINING_FRACTION The key in the configuration that the minimum training fraction is associated with
static java.lang.String	SUPPRESS_CLASSIFIER_TEXT_OUT The in the configuration to check for in order to prevent textual output of the aggregated model

Constructor Summary

Constructors

Constructor and Description
WekaClassifierHadoopReducer()

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)
void	setup(org.apache.hadoop.mapreduce.Reducer.Context context)

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

Field Detail

CLASSIFIER_WRITE_PATH

public static final java.lang.String CLASSIFIER_WRITE_PATH

The key in the Configuration that the write path for the model is associated with

See Also:

Constant Field Values

MIN_TRAINING_FRACTION

public static final java.lang.String MIN_TRAINING_FRACTION

The key in the configuration that the minimum training fraction is associated with

See Also:

Constant Field Values

SUPPRESS_CLASSIFIER_TEXT_OUT

public static final java.lang.String SUPPRESS_CLASSIFIER_TEXT_OUT

The in the configuration to check for in order to prevent textual output of the aggregated model

See Also:

Constant Field Values

Constructor Detail

WekaClassifierHadoopReducer

public WekaClassifierHadoopReducer()

Method Detail

setup

public void setup(org.apache.hadoop.mapreduce.Reducer.Context context)
           throws java.io.IOException

Overrides:

setup in class 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>

Throws:

java.io.IOException

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 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>

Throws:

java.io.IOException