org.apache.mahout.cf.taste.hadoop.als

Class FactorizationEvaluator.PredictRatingsMapper

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.DoubleWritable,org.apache.hadoop.io.NullWritable>

org.apache.mahout.cf.taste.hadoop.als.FactorizationEvaluator.PredictRatingsMapper

Enclosing class:

FactorizationEvaluator

public static class FactorizationEvaluator.PredictRatingsMapper
extends org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.DoubleWritable,org.apache.hadoop.io.NullWritable>

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
FactorizationEvaluator.PredictRatingsMapper()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	map(org.apache.hadoop.io.LongWritable key, org.apache.hadoop.io.Text value, 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

FactorizationEvaluator.PredictRatingsMapper

public FactorizationEvaluator.PredictRatingsMapper()

Method Detail

setup

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

Overrides:

setup in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.DoubleWritable,org.apache.hadoop.io.NullWritable>

Throws:

IOException

InterruptedException

map

protected void map(org.apache.hadoop.io.LongWritable key,
       org.apache.hadoop.io.Text value,
       org.apache.hadoop.mapreduce.Mapper.Context ctx)
            throws IOException,
                   InterruptedException

Overrides:

map in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.DoubleWritable,org.apache.hadoop.io.NullWritable>

Throws:

IOException

InterruptedException