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

java.lang.Object
  extended by org.apache.hadoop.mapreduce.Mapper<K1,V1,K2,V2>
      extended by org.apache.mahout.cf.taste.hadoop.als.SharingMapper<org.apache.hadoop.io.IntWritable,VectorWritable,org.apache.hadoop.io.IntWritable,VectorWritable,ImplicitFeedbackAlternatingLeastSquaresSolver>
          extended by org.apache.mahout.cf.taste.hadoop.als.SolveImplicitFeedbackMapper

public class SolveImplicitFeedbackMapper
extends SharingMapper<org.apache.hadoop.io.IntWritable,VectorWritable,org.apache.hadoop.io.IntWritable,VectorWritable,ImplicitFeedbackAlternatingLeastSquaresSolver>

Solving mapper that can be safely executed using multiple threads


Nested Class Summary
 
Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Mapper
org.apache.hadoop.mapreduce.Mapper.Context
 
Constructor Summary
SolveImplicitFeedbackMapper()
           
 
Method Summary
protected  void map(org.apache.hadoop.io.IntWritable userOrItemID, VectorWritable ratingsWritable, org.apache.hadoop.mapreduce.Mapper.Context ctx)
           
 
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

SolveImplicitFeedbackMapper

public SolveImplicitFeedbackMapper()
Method Detail

map

protected void map(org.apache.hadoop.io.IntWritable userOrItemID,
                   VectorWritable ratingsWritable,
                   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,org.apache.hadoop.io.IntWritable,VectorWritable>
Throws:
IOException
InterruptedException


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