org.apache.mahout.fpm.pfpgrowth
Class TransactionSortingReducer

java.lang.Object
  extended by org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.LongWritable,TransactionTree,org.apache.hadoop.io.LongWritable,TransactionTree>
      extended by org.apache.mahout.fpm.pfpgrowth.TransactionSortingReducer

public class TransactionSortingReducer
extends org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.LongWritable,TransactionTree,org.apache.hadoop.io.LongWritable,TransactionTree>

takes each group of transactions and runs Vanilla FPGrowth on it and outputs the the Top K frequent Patterns for each group.


Nested Class Summary
 
Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Reducer
org.apache.hadoop.mapreduce.Reducer.Context
 
Constructor Summary
TransactionSortingReducer()
           
 
Method Summary
protected  void reduce(org.apache.hadoop.io.LongWritable key, java.lang.Iterable<TransactionTree> values, org.apache.hadoop.mapreduce.Reducer.Context context)
           
 
Methods inherited from class org.apache.hadoop.mapreduce.Reducer
cleanup, run, setup
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

TransactionSortingReducer

public TransactionSortingReducer()
Method Detail

reduce

protected void reduce(org.apache.hadoop.io.LongWritable key,
                      java.lang.Iterable<TransactionTree> values,
                      org.apache.hadoop.mapreduce.Reducer.Context context)
               throws java.io.IOException,
                      java.lang.InterruptedException
Overrides:
reduce in class org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.LongWritable,TransactionTree,org.apache.hadoop.io.LongWritable,TransactionTree>
Throws:
java.io.IOException
java.lang.InterruptedException


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