org.apache.mahout.math.hadoop.similarity
Class RowSimilarityJob.WeightedOccurrencesPerColumnReducer
java.lang.Object
org.apache.hadoop.mapreduce.Reducer<VarIntWritable,org.apache.mahout.math.hadoop.similarity.WeightedOccurrence,VarIntWritable,org.apache.mahout.math.hadoop.similarity.WeightedOccurrenceArray>
org.apache.mahout.math.hadoop.similarity.RowSimilarityJob.WeightedOccurrencesPerColumnReducer
- Enclosing class:
- RowSimilarityJob
public static class RowSimilarityJob.WeightedOccurrencesPerColumnReducer
- extends org.apache.hadoop.mapreduce.Reducer<VarIntWritable,org.apache.mahout.math.hadoop.similarity.WeightedOccurrence,VarIntWritable,org.apache.mahout.math.hadoop.similarity.WeightedOccurrenceArray>
collects all WeightedOccurrence
s for a column and writes them to a WeightedOccurrenceArray
Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Reducer |
org.apache.hadoop.mapreduce.Reducer.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 |
RowSimilarityJob.WeightedOccurrencesPerColumnReducer
public RowSimilarityJob.WeightedOccurrencesPerColumnReducer()
reduce
protected void reduce(VarIntWritable column,
java.lang.Iterable<org.apache.mahout.math.hadoop.similarity.WeightedOccurrence> weightedOccurrences,
org.apache.hadoop.mapreduce.Reducer.Context ctx)
throws java.io.IOException,
java.lang.InterruptedException
- Overrides:
reduce
in class org.apache.hadoop.mapreduce.Reducer<VarIntWritable,org.apache.mahout.math.hadoop.similarity.WeightedOccurrence,VarIntWritable,org.apache.mahout.math.hadoop.similarity.WeightedOccurrenceArray>
- Throws:
java.io.IOException
java.lang.InterruptedException
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