org.apache.mahout.cf.taste.hadoop.cooccurence
Class ItemBigramGenerator.UserItemReducer

java.lang.Object
  extended by org.apache.hadoop.mapred.MapReduceBase
      extended by org.apache.mahout.cf.taste.hadoop.cooccurence.ItemBigramGenerator.UserItemReducer
All Implemented Interfaces:
java.io.Closeable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.VIntWritable,org.apache.hadoop.io.VIntWritable,org.apache.hadoop.io.VIntWritable,org.apache.hadoop.io.VIntWritable>
Enclosing class:
ItemBigramGenerator

public static class ItemBigramGenerator.UserItemReducer
extends org.apache.hadoop.mapred.MapReduceBase
implements org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.VIntWritable,org.apache.hadoop.io.VIntWritable,org.apache.hadoop.io.VIntWritable,org.apache.hadoop.io.VIntWritable>


Constructor Summary
ItemBigramGenerator.UserItemReducer()
           
 
Method Summary
 void reduce(org.apache.hadoop.io.VIntWritable user, java.util.Iterator<org.apache.hadoop.io.VIntWritable> itemIterator, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.VIntWritable,org.apache.hadoop.io.VIntWritable> output, org.apache.hadoop.mapred.Reporter reporter)
           
 
Methods inherited from class org.apache.hadoop.mapred.MapReduceBase
close, configure
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.apache.hadoop.mapred.JobConfigurable
configure
 
Methods inherited from interface java.io.Closeable
close
 

Constructor Detail

ItemBigramGenerator.UserItemReducer

public ItemBigramGenerator.UserItemReducer()
Method Detail

reduce

public void reduce(org.apache.hadoop.io.VIntWritable user,
                   java.util.Iterator<org.apache.hadoop.io.VIntWritable> itemIterator,
                   org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.VIntWritable,org.apache.hadoop.io.VIntWritable> output,
                   org.apache.hadoop.mapred.Reporter reporter)
            throws java.io.IOException
Specified by:
reduce in interface org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.VIntWritable,org.apache.hadoop.io.VIntWritable,org.apache.hadoop.io.VIntWritable,org.apache.hadoop.io.VIntWritable>
Throws:
java.io.IOException


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