org.apache.mahout.cf.taste.hadoop
Class ToUserPrefsMapper

java.lang.Object
  extended by org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,VarLongWritable,VarLongWritable>
      extended by org.apache.mahout.cf.taste.hadoop.ToEntityPrefsMapper
          extended by org.apache.mahout.cf.taste.hadoop.ToUserPrefsMapper

public final class ToUserPrefsMapper
extends ToEntityPrefsMapper

The 'reverse' of ToItemPrefsMapper; outputs item IDs mapped to user-pref data.


Nested Class Summary
 
Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Mapper
org.apache.hadoop.mapreduce.Mapper.Context
 
Field Summary
 
Fields inherited from class org.apache.mahout.cf.taste.hadoop.ToEntityPrefsMapper
RATING_SHIFT, TRANSPOSE_USER_ITEM
 
Constructor Summary
ToUserPrefsMapper()
           
 
Method Summary
 
Methods inherited from class org.apache.mahout.cf.taste.hadoop.ToEntityPrefsMapper
map, setup
 
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

ToUserPrefsMapper

public ToUserPrefsMapper()


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