org.apache.mahout.math.stats.entropy
Class CalculateSpecificConditionalEntropyMapper

java.lang.Object
  extended by org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.Text,org.apache.hadoop.io.DoubleWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.DoubleWritable>
      extended by org.apache.mahout.math.stats.entropy.CalculateSpecificConditionalEntropyMapper

public final class CalculateSpecificConditionalEntropyMapper
extends org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.Text,org.apache.hadoop.io.DoubleWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.DoubleWritable>

Drops the key.


Nested Class Summary
 
Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Mapper
org.apache.hadoop.mapreduce.Mapper.Context
 
Constructor Summary
CalculateSpecificConditionalEntropyMapper()
           
 
Method Summary
protected  void map(org.apache.hadoop.io.Text key, org.apache.hadoop.io.DoubleWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
           
 
Methods inherited from class org.apache.hadoop.mapreduce.Mapper
cleanup, run, setup
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

CalculateSpecificConditionalEntropyMapper

public CalculateSpecificConditionalEntropyMapper()
Method Detail

map

protected void map(org.apache.hadoop.io.Text key,
                   org.apache.hadoop.io.DoubleWritable value,
                   org.apache.hadoop.mapreduce.Mapper.Context context)
            throws IOException,
                   InterruptedException
Overrides:
map in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.Text,org.apache.hadoop.io.DoubleWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.DoubleWritable>
Throws:
IOException
InterruptedException


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