org.apache.mahout.clustering.classify

Class ClusterClassificationMapper

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.WritableComparable<?>,VectorWritable,org.apache.hadoop.io.IntWritable,WeightedVectorWritable>

org.apache.mahout.clustering.classify.ClusterClassificationMapper

public class ClusterClassificationMapper
extends org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.WritableComparable<?>,VectorWritable,org.apache.hadoop.io.IntWritable,WeightedVectorWritable>

Mapper for classifying vectors into clusters.

Nested Class Summary

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

org.apache.hadoop.mapreduce.Mapper.Context

Constructor Summary

Constructors

Constructor and Description
ClusterClassificationMapper()

Method Summary

Modifier and Type	Method and Description
protected void	map(org.apache.hadoop.io.WritableComparable<?> key, VectorWritable vw, org.apache.hadoop.mapreduce.Mapper.Context context) Mapper which classifies the vectors to respective clusters.
static List<Cluster>	populateClusterModels(org.apache.hadoop.fs.Path clusterOutputPath, org.apache.hadoop.conf.Configuration conf)
protected void	setup(org.apache.hadoop.mapreduce.Mapper.Context context)

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

cleanup, run

Methods inherited from class java.lang.Object

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

Constructor Detail

ClusterClassificationMapper

public ClusterClassificationMapper()

Method Detail

setup

protected void setup(org.apache.hadoop.mapreduce.Mapper.Context context)
              throws IOException,
                     InterruptedException

Overrides:

setup in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.WritableComparable<?>,VectorWritable,org.apache.hadoop.io.IntWritable,WeightedVectorWritable>

Throws:

IOException

InterruptedException

map

protected void map(org.apache.hadoop.io.WritableComparable<?> key,
                   VectorWritable vw,
                   org.apache.hadoop.mapreduce.Mapper.Context context)
            throws IOException,
                   InterruptedException

Mapper which classifies the vectors to respective clusters.

Overrides:

map in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.WritableComparable<?>,VectorWritable,org.apache.hadoop.io.IntWritable,WeightedVectorWritable>

Throws:

IOException

InterruptedException

populateClusterModels

public static List<Cluster> populateClusterModels(org.apache.hadoop.fs.Path clusterOutputPath,
                                                  org.apache.hadoop.conf.Configuration conf)
                                           throws IOException

Throws:

IOException