org.apache.mahout.cf.taste.hadoop.cooccurence
Class ItemSimilarityEstimator.ItemItemMapper

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

public static class ItemSimilarityEstimator.ItemItemMapper
extends org.apache.hadoop.mapred.MapReduceBase
implements org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.VIntWritable,org.apache.hadoop.io.VIntWritable,Bigram,Bigram>

Output K -> (item1, item2), V -> ONE


Constructor Summary
ItemSimilarityEstimator.ItemItemMapper()
           
 
Method Summary
 void map(org.apache.hadoop.io.VIntWritable item1, org.apache.hadoop.io.VIntWritable item2, org.apache.hadoop.mapred.OutputCollector<Bigram,Bigram> 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

ItemSimilarityEstimator.ItemItemMapper

public ItemSimilarityEstimator.ItemItemMapper()
Method Detail

map

public void map(org.apache.hadoop.io.VIntWritable item1,
                org.apache.hadoop.io.VIntWritable item2,
                org.apache.hadoop.mapred.OutputCollector<Bigram,Bigram> output,
                org.apache.hadoop.mapred.Reporter reporter)
         throws java.io.IOException
Specified by:
map in interface org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.VIntWritable,org.apache.hadoop.io.VIntWritable,Bigram,Bigram>
Throws:
java.io.IOException


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