org.apache.mahout.cf.taste.hadoop.item
Class PartialMultiplyMapper

java.lang.Object
  extended by org.apache.hadoop.mapreduce.Mapper<VarIntWritable,VectorAndPrefsWritable,VarLongWritable,PrefAndSimilarityColumnWritable>
      extended by org.apache.mahout.cf.taste.hadoop.item.PartialMultiplyMapper

public final class PartialMultiplyMapper
extends org.apache.hadoop.mapreduce.Mapper<VarIntWritable,VectorAndPrefsWritable,VarLongWritable,PrefAndSimilarityColumnWritable>

maps similar items and their preference values per user


Nested Class Summary
 
Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Mapper
org.apache.hadoop.mapreduce.Mapper.Context
 
Constructor Summary
PartialMultiplyMapper()
           
 
Method Summary
protected  void map(VarIntWritable key, VectorAndPrefsWritable vectorAndPrefsWritable, 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

PartialMultiplyMapper

public PartialMultiplyMapper()
Method Detail

map

protected void map(VarIntWritable key,
                   VectorAndPrefsWritable vectorAndPrefsWritable,
                   org.apache.hadoop.mapreduce.Mapper.Context context)
            throws IOException,
                   InterruptedException
Overrides:
map in class org.apache.hadoop.mapreduce.Mapper<VarIntWritable,VectorAndPrefsWritable,VarLongWritable,PrefAndSimilarityColumnWritable>
Throws:
IOException
InterruptedException


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