org.apache.mahout.cf.taste.hadoop.similarity.item

Class ItemSimilarityJob.MostSimilarItemPairsMapper

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.IntWritable,VectorWritable,EntityEntityWritable,org.apache.hadoop.io.DoubleWritable>

org.apache.mahout.cf.taste.hadoop.similarity.item.ItemSimilarityJob.MostSimilarItemPairsMapper

Enclosing class:

ItemSimilarityJob

public static class ItemSimilarityJob.MostSimilarItemPairsMapper
extends org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.IntWritable,VectorWritable,EntityEntityWritable,org.apache.hadoop.io.DoubleWritable>

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
MostSimilarItemPairsMapper()

Method Summary

Modifier and Type	Method and Description
protected void	map(org.apache.hadoop.io.IntWritable itemIDIndexWritable, VectorWritable similarityVector, org.apache.hadoop.mapreduce.Mapper.Context ctx)
protected void	setup(org.apache.hadoop.mapreduce.Mapper.Context ctx)

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

MostSimilarItemPairsMapper

public MostSimilarItemPairsMapper()

Method Detail

setup

protected void setup(org.apache.hadoop.mapreduce.Mapper.Context ctx)

Overrides:

setup in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.IntWritable,VectorWritable,EntityEntityWritable,org.apache.hadoop.io.DoubleWritable>

map

protected void map(org.apache.hadoop.io.IntWritable itemIDIndexWritable,
                   VectorWritable similarityVector,
                   org.apache.hadoop.mapreduce.Mapper.Context ctx)
            throws IOException,
                   InterruptedException

Overrides:

map in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.IntWritable,VectorWritable,EntityEntityWritable,org.apache.hadoop.io.DoubleWritable>

Throws:

IOException

InterruptedException