org.apache.mahout.math.hadoop.similarity
Class RowSimilarityJob.SimilarityReducer
java.lang.Object
org.apache.hadoop.mapreduce.Reducer<WeightedRowPair,Cooccurrence,SimilarityMatrixEntryKey,DistributedRowMatrix.MatrixEntryWritable>
org.apache.mahout.math.hadoop.similarity.RowSimilarityJob.SimilarityReducer
- Enclosing class:
- RowSimilarityJob
public static class RowSimilarityJob.SimilarityReducer
- extends org.apache.hadoop.mapreduce.Reducer<WeightedRowPair,Cooccurrence,SimilarityMatrixEntryKey,DistributedRowMatrix.MatrixEntryWritable>
computes the pairwise similarities
Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Reducer |
org.apache.hadoop.mapreduce.Reducer.Context |
Method Summary |
protected void |
reduce(WeightedRowPair rowPair,
java.lang.Iterable<Cooccurrence> cooccurrences,
org.apache.hadoop.mapreduce.Reducer.Context ctx)
|
protected void |
setup(org.apache.hadoop.mapreduce.Reducer.Context ctx)
|
Methods inherited from class org.apache.hadoop.mapreduce.Reducer |
cleanup, run |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
RowSimilarityJob.SimilarityReducer
public RowSimilarityJob.SimilarityReducer()
setup
protected void setup(org.apache.hadoop.mapreduce.Reducer.Context ctx)
throws java.io.IOException,
java.lang.InterruptedException
- Overrides:
setup
in class org.apache.hadoop.mapreduce.Reducer<WeightedRowPair,Cooccurrence,SimilarityMatrixEntryKey,DistributedRowMatrix.MatrixEntryWritable>
- Throws:
java.io.IOException
java.lang.InterruptedException
reduce
protected void reduce(WeightedRowPair rowPair,
java.lang.Iterable<Cooccurrence> cooccurrences,
org.apache.hadoop.mapreduce.Reducer.Context ctx)
throws java.io.IOException,
java.lang.InterruptedException
- Overrides:
reduce
in class org.apache.hadoop.mapreduce.Reducer<WeightedRowPair,Cooccurrence,SimilarityMatrixEntryKey,DistributedRowMatrix.MatrixEntryWritable>
- Throws:
java.io.IOException
java.lang.InterruptedException
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