Uses of Class
org.apache.mahout.math.VectorWritable

Packages that use VectorWritable
org.apache.mahout.cf.taste.hadoop.als   
org.apache.mahout.cf.taste.hadoop.item   
org.apache.mahout.cf.taste.hadoop.preparation   
org.apache.mahout.cf.taste.hadoop.similarity.item   
org.apache.mahout.classifier.naivebayes.test   
org.apache.mahout.classifier.naivebayes.training   
org.apache.mahout.clustering  
org.apache.mahout.clustering.canopy   
org.apache.mahout.clustering.classify   
org.apache.mahout.clustering.fuzzykmeans   
org.apache.mahout.clustering.iterator   
org.apache.mahout.clustering.lda.cvb   
org.apache.mahout.clustering.spectral   
org.apache.mahout.clustering.streaming.mapreduce   
org.apache.mahout.clustering.topdown.postprocessor   
org.apache.mahout.common.mapreduce   
org.apache.mahout.math   
org.apache.mahout.math.hadoop   
org.apache.mahout.math.hadoop.similarity   
org.apache.mahout.math.hadoop.similarity.cooccurrence   
org.apache.mahout.math.hadoop.stochasticsvd   
org.apache.mahout.math.hadoop.stochasticsvd.qr   
org.apache.mahout.vectorizer.common   
org.apache.mahout.vectorizer.pruner   
org.apache.mahout.vectorizer.term   
org.apache.mahout.vectorizer.tfidf   
 

Uses of VectorWritable in org.apache.mahout.cf.taste.hadoop.als
 

Methods in org.apache.mahout.cf.taste.hadoop.als with parameters of type VectorWritable
protected  void SolveImplicitFeedbackMapper.map(org.apache.hadoop.io.IntWritable userOrItemID, VectorWritable ratingsWritable, org.apache.hadoop.mapreduce.Mapper.Context ctx)
           
protected  void SolveExplicitFeedbackMapper.map(org.apache.hadoop.io.IntWritable userOrItemID, VectorWritable ratingsWritable, org.apache.hadoop.mapreduce.Mapper.Context ctx)
           
protected  void PredictionMapper.map(org.apache.hadoop.io.IntWritable userIndexWritable, VectorWritable ratingsWritable, org.apache.hadoop.mapreduce.Mapper.Context ctx)
           
 

Uses of VectorWritable in org.apache.mahout.cf.taste.hadoop.item
 

Methods in org.apache.mahout.cf.taste.hadoop.item with parameters of type VectorWritable
protected  void SimilarityMatrixRowWrapperMapper.map(org.apache.hadoop.io.IntWritable key, VectorWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
           
protected  void UserVectorSplitterMapper.map(VarLongWritable key, VectorWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
           
 

Uses of VectorWritable in org.apache.mahout.cf.taste.hadoop.preparation
 

Methods in org.apache.mahout.cf.taste.hadoop.preparation with parameters of type VectorWritable
protected  void ToItemVectorsMapper.map(VarLongWritable rowIndex, VectorWritable vectorWritable, org.apache.hadoop.mapreduce.Mapper.Context ctx)
           
 

Method parameters in org.apache.mahout.cf.taste.hadoop.preparation with type arguments of type VectorWritable
protected  void ToItemVectorsReducer.reduce(org.apache.hadoop.io.IntWritable row, Iterable<VectorWritable> vectors, org.apache.hadoop.mapreduce.Reducer.Context ctx)
           
 

Uses of VectorWritable in org.apache.mahout.cf.taste.hadoop.similarity.item
 

Methods in org.apache.mahout.cf.taste.hadoop.similarity.item with parameters of type VectorWritable
protected  void ItemSimilarityJob.MostSimilarItemPairsMapper.map(org.apache.hadoop.io.IntWritable itemIDIndexWritable, VectorWritable similarityVector, org.apache.hadoop.mapreduce.Mapper.Context ctx)
           
 

Uses of VectorWritable in org.apache.mahout.classifier.naivebayes.test
 

Methods in org.apache.mahout.classifier.naivebayes.test with parameters of type VectorWritable
protected  void BayesTestMapper.map(org.apache.hadoop.io.Text key, VectorWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
           
 

Uses of VectorWritable in org.apache.mahout.classifier.naivebayes.training
 

Methods in org.apache.mahout.classifier.naivebayes.training with parameters of type VectorWritable
protected  void WeightsMapper.map(org.apache.hadoop.io.IntWritable index, VectorWritable value, org.apache.hadoop.mapreduce.Mapper.Context ctx)
           
protected  void ThetaMapper.map(org.apache.hadoop.io.IntWritable key, VectorWritable value, org.apache.hadoop.mapreduce.Mapper.Context ctx)
           
protected  void IndexInstancesMapper.map(org.apache.hadoop.io.Text labelText, VectorWritable instance, org.apache.hadoop.mapreduce.Mapper.Context ctx)
           
 

Uses of VectorWritable in org.apache.mahout.clustering
 

Methods in org.apache.mahout.clustering that return types with arguments of type VectorWritable
 Model<VectorWritable> Model.sampleFromPosterior()
           
 

Methods in org.apache.mahout.clustering with parameters of type VectorWritable
 void AbstractCluster.observe(VectorWritable x)
           
 void AbstractCluster.observe(VectorWritable x, double weight)
           
 

Method parameters in org.apache.mahout.clustering with type arguments of type VectorWritable
 void AbstractCluster.observe(Model<VectorWritable> x)
           
 

Uses of VectorWritable in org.apache.mahout.clustering.canopy
 

Method parameters in org.apache.mahout.clustering.canopy with type arguments of type VectorWritable
protected  void CanopyReducer.reduce(org.apache.hadoop.io.Text arg0, Iterable<VectorWritable> values, org.apache.hadoop.mapreduce.Reducer.Context context)
           
 

Uses of VectorWritable in org.apache.mahout.clustering.classify
 

Methods in org.apache.mahout.clustering.classify with parameters of type VectorWritable
protected  void ClusterClassificationMapper.map(org.apache.hadoop.io.WritableComparable<?> key, VectorWritable vw, org.apache.hadoop.mapreduce.Mapper.Context context)
          Mapper which classifies the vectors to respective clusters.
 

Uses of VectorWritable in org.apache.mahout.clustering.fuzzykmeans
 

Methods in org.apache.mahout.clustering.fuzzykmeans with parameters of type VectorWritable
 double SoftCluster.pdf(VectorWritable vw)
           
 

Uses of VectorWritable in org.apache.mahout.clustering.iterator
 

Methods in org.apache.mahout.clustering.iterator that return types with arguments of type VectorWritable
 Model<VectorWritable> DistanceMeasureCluster.sampleFromPosterior()
           
 

Methods in org.apache.mahout.clustering.iterator with parameters of type VectorWritable
protected  void CIMapper.map(org.apache.hadoop.io.WritableComparable<?> key, VectorWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
           
 double DistanceMeasureCluster.pdf(VectorWritable vw)
           
 

Uses of VectorWritable in org.apache.mahout.clustering.lda.cvb
 

Methods in org.apache.mahout.clustering.lda.cvb with parameters of type VectorWritable
 void CachingCVB0PerplexityMapper.map(org.apache.hadoop.io.IntWritable docId, VectorWritable document, org.apache.hadoop.mapreduce.Mapper.Context context)
           
protected  void CVB0TopicTermVectorNormalizerMapper.map(org.apache.hadoop.io.IntWritable key, VectorWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
           
 void CVB0DocInferenceMapper.map(org.apache.hadoop.io.IntWritable docId, VectorWritable doc, org.apache.hadoop.mapreduce.Mapper.Context context)
           
 void CachingCVB0Mapper.map(org.apache.hadoop.io.IntWritable docId, VectorWritable document, org.apache.hadoop.mapreduce.Mapper.Context context)
           
 

Uses of VectorWritable in org.apache.mahout.clustering.spectral
 

Methods in org.apache.mahout.clustering.spectral with parameters of type VectorWritable
protected  void VectorMatrixMultiplicationJob.VectorMatrixMultiplicationMapper.map(org.apache.hadoop.io.IntWritable key, VectorWritable row, org.apache.hadoop.mapreduce.Mapper.Context ctx)
           
protected  void UnitVectorizerJob.UnitVectorizerMapper.map(org.apache.hadoop.io.IntWritable row, VectorWritable vector, org.apache.hadoop.mapreduce.Mapper.Context context)
           
protected  void MatrixDiagonalizeJob.MatrixDiagonalizeMapper.map(org.apache.hadoop.io.IntWritable key, VectorWritable row, org.apache.hadoop.mapreduce.Mapper.Context context)
           
 

Uses of VectorWritable in org.apache.mahout.clustering.streaming.mapreduce
 

Methods in org.apache.mahout.clustering.streaming.mapreduce with parameters of type VectorWritable
 void StreamingKMeansMapper.map(org.apache.hadoop.io.Writable key, VectorWritable point, org.apache.hadoop.mapreduce.Mapper.Context context)
           
 

Method parameters in org.apache.mahout.clustering.streaming.mapreduce with type arguments of type VectorWritable
static Iterable<Centroid> StreamingKMeansUtilsMR.getCentroidsFromVectorWritable(Iterable<VectorWritable> inputIterable)
          Returns an Iterable of centroids from an Iterable of VectorWritables by creating a new Centroid containing a RandomAccessSparseVector as a delegate for each VectorWritable.
 

Uses of VectorWritable in org.apache.mahout.clustering.topdown.postprocessor
 

Method parameters in org.apache.mahout.clustering.topdown.postprocessor with type arguments of type VectorWritable
protected  void ClusterOutputPostProcessorReducer.reduce(org.apache.hadoop.io.IntWritable key, Iterable<VectorWritable> values, org.apache.hadoop.mapreduce.Reducer.Context context)
          The key is the remapped cluster id and the values contains the vectors in that cluster.
 

Uses of VectorWritable in org.apache.mahout.common.mapreduce
 

Methods in org.apache.mahout.common.mapreduce with parameters of type VectorWritable
protected  void TransposeMapper.map(org.apache.hadoop.io.IntWritable r, VectorWritable v, org.apache.hadoop.mapreduce.Mapper.Context ctx)
           
 

Method parameters in org.apache.mahout.common.mapreduce with type arguments of type VectorWritable
protected  void VectorSumReducer.reduce(org.apache.hadoop.io.WritableComparable<?> key, Iterable<VectorWritable> values, org.apache.hadoop.mapreduce.Reducer.Context ctx)
           
protected  void VectorSumCombiner.reduce(org.apache.hadoop.io.WritableComparable<?> key, Iterable<VectorWritable> values, org.apache.hadoop.mapreduce.Reducer.Context ctx)
           
 void MergeVectorsReducer.reduce(org.apache.hadoop.io.WritableComparable<?> key, Iterable<VectorWritable> vectors, org.apache.hadoop.mapreduce.Reducer.Context ctx)
           
 void MergeVectorsCombiner.reduce(org.apache.hadoop.io.WritableComparable<?> key, Iterable<VectorWritable> vectors, org.apache.hadoop.mapreduce.Reducer.Context ctx)
           
 

Uses of VectorWritable in org.apache.mahout.math
 

Methods in org.apache.mahout.math that return VectorWritable
static VectorWritable VectorWritable.merge(Iterator<VectorWritable> vectors)
           
 

Method parameters in org.apache.mahout.math with type arguments of type VectorWritable
static VectorWritable VectorWritable.merge(Iterator<VectorWritable> vectors)
           
static Vector VectorWritable.mergeToVector(Iterator<VectorWritable> vectors)
           
 

Uses of VectorWritable in org.apache.mahout.math.hadoop
 

Methods in org.apache.mahout.math.hadoop with parameters of type VectorWritable
 void TransposeJob.TransposeMapper.map(org.apache.hadoop.io.IntWritable r, VectorWritable v, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.IntWritable,VectorWritable> out, org.apache.hadoop.mapred.Reporter reporter)
           
 void TimesSquaredJob.TimesMapper.map(org.apache.hadoop.io.IntWritable rowNum, VectorWritable v, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.NullWritable,VectorWritable> out, org.apache.hadoop.mapred.Reporter rep)
           
 void TimesSquaredJob.TimesSquaredMapper.map(T rowNum, VectorWritable v, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.NullWritable,VectorWritable> out, org.apache.hadoop.mapred.Reporter rep)
           
 void MatrixColumnMeansJob.MatrixColumnMeansMapper.map(org.apache.hadoop.io.Writable r, VectorWritable v, org.apache.hadoop.mapreduce.Mapper.Context context)
          The mapper computes a running sum of the vectors the task has seen.
protected  double TimesSquaredJob.TimesSquaredMapper.scale(VectorWritable v)
           
 

Method parameters in org.apache.mahout.math.hadoop with type arguments of type VectorWritable
 void MatrixMultiplicationJob.MatrixMultiplyMapper.map(org.apache.hadoop.io.IntWritable index, org.apache.hadoop.mapred.join.TupleWritable v, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.IntWritable,VectorWritable> out, org.apache.hadoop.mapred.Reporter reporter)
           
 void TransposeJob.TransposeMapper.map(org.apache.hadoop.io.IntWritable r, VectorWritable v, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.IntWritable,VectorWritable> out, org.apache.hadoop.mapred.Reporter reporter)
           
 void TimesSquaredJob.TimesMapper.map(org.apache.hadoop.io.IntWritable rowNum, VectorWritable v, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.NullWritable,VectorWritable> out, org.apache.hadoop.mapred.Reporter rep)
           
 void TimesSquaredJob.TimesSquaredMapper.map(T rowNum, VectorWritable v, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.NullWritable,VectorWritable> out, org.apache.hadoop.mapred.Reporter rep)
           
 void MatrixMultiplicationJob.MatrixMultiplicationReducer.reduce(org.apache.hadoop.io.IntWritable rowNum, Iterator<VectorWritable> it, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.IntWritable,VectorWritable> out, org.apache.hadoop.mapred.Reporter reporter)
           
 void MatrixMultiplicationJob.MatrixMultiplicationReducer.reduce(org.apache.hadoop.io.IntWritable rowNum, Iterator<VectorWritable> it, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.IntWritable,VectorWritable> out, org.apache.hadoop.mapred.Reporter reporter)
           
 void MatrixColumnMeansJob.MatrixColumnMeansReducer.reduce(org.apache.hadoop.io.NullWritable n, Iterable<VectorWritable> vectors, org.apache.hadoop.mapreduce.Reducer.Context context)
           
 void TimesSquaredJob.VectorSummingReducer.reduce(org.apache.hadoop.io.NullWritable n, Iterator<VectorWritable> vectors, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.NullWritable,VectorWritable> out, org.apache.hadoop.mapred.Reporter reporter)
           
 void TimesSquaredJob.VectorSummingReducer.reduce(org.apache.hadoop.io.NullWritable n, Iterator<VectorWritable> vectors, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.NullWritable,VectorWritable> out, org.apache.hadoop.mapred.Reporter reporter)
           
 void TransposeJob.MergeVectorsCombiner.reduce(org.apache.hadoop.io.WritableComparable<?> key, Iterator<VectorWritable> vectors, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.WritableComparable<?>,VectorWritable> out, org.apache.hadoop.mapred.Reporter reporter)
           
 void TransposeJob.MergeVectorsCombiner.reduce(org.apache.hadoop.io.WritableComparable<?> key, Iterator<VectorWritable> vectors, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.WritableComparable<?>,VectorWritable> out, org.apache.hadoop.mapred.Reporter reporter)
           
 void TransposeJob.MergeVectorsReducer.reduce(org.apache.hadoop.io.WritableComparable<?> key, Iterator<VectorWritable> vectors, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.WritableComparable<?>,VectorWritable> out, org.apache.hadoop.mapred.Reporter reporter)
           
 void TransposeJob.MergeVectorsReducer.reduce(org.apache.hadoop.io.WritableComparable<?> key, Iterator<VectorWritable> vectors, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.WritableComparable<?>,VectorWritable> out, org.apache.hadoop.mapred.Reporter reporter)
           
 

Uses of VectorWritable in org.apache.mahout.math.hadoop.similarity
 

Methods in org.apache.mahout.math.hadoop.similarity with parameters of type VectorWritable
protected  void VectorDistanceMapper.map(org.apache.hadoop.io.WritableComparable<?> key, VectorWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
           
protected  void VectorDistanceInvertedMapper.map(org.apache.hadoop.io.WritableComparable<?> key, VectorWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
           
 

Uses of VectorWritable in org.apache.mahout.math.hadoop.similarity.cooccurrence
 

Methods in org.apache.mahout.math.hadoop.similarity.cooccurrence with parameters of type VectorWritable
protected  void RowSimilarityJob.VectorNormMapper.map(org.apache.hadoop.io.IntWritable row, VectorWritable vectorWritable, org.apache.hadoop.mapreduce.Mapper.Context ctx)
           
protected  void RowSimilarityJob.CooccurrencesMapper.map(org.apache.hadoop.io.IntWritable column, VectorWritable occurrenceVector, org.apache.hadoop.mapreduce.Mapper.Context ctx)
           
protected  void RowSimilarityJob.UnsymmetrifyMapper.map(org.apache.hadoop.io.IntWritable row, VectorWritable similaritiesWritable, org.apache.hadoop.mapreduce.Mapper.Context ctx)
           
protected  void RowSimilarityJob.CountObservationsMapper.map(org.apache.hadoop.io.IntWritable rowIndex, VectorWritable rowVectorWritable, org.apache.hadoop.mapreduce.Mapper.Context ctx)
           
static Vector.Element[] Vectors.toArray(VectorWritable vectorWritable)
           
 

Method parameters in org.apache.mahout.math.hadoop.similarity.cooccurrence with type arguments of type VectorWritable
static Vector Vectors.merge(Iterable<VectorWritable> partialVectors)
           
protected  void RowSimilarityJob.MergeVectorsReducer.reduce(org.apache.hadoop.io.IntWritable row, Iterable<VectorWritable> partialVectors, org.apache.hadoop.mapreduce.Reducer.Context ctx)
           
protected  void RowSimilarityJob.SimilarityReducer.reduce(org.apache.hadoop.io.IntWritable row, Iterable<VectorWritable> partialDots, org.apache.hadoop.mapreduce.Reducer.Context ctx)
           
protected  void RowSimilarityJob.MergeToTopKSimilaritiesReducer.reduce(org.apache.hadoop.io.IntWritable row, Iterable<VectorWritable> partials, org.apache.hadoop.mapreduce.Reducer.Context ctx)
           
protected  void RowSimilarityJob.SumObservationsReducer.reduce(org.apache.hadoop.io.NullWritable nullWritable, Iterable<VectorWritable> partialVectors, org.apache.hadoop.mapreduce.Reducer.Context ctx)
           
static Vector Vectors.sum(Iterator<VectorWritable> vectors)
           
 

Uses of VectorWritable in org.apache.mahout.math.hadoop.stochasticsvd
 

Fields in org.apache.mahout.math.hadoop.stochasticsvd with type parameters of type VectorWritable
protected  org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Writable,VectorWritable> ABtJob.QRReducer.rhatCollector
           
protected  org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Writable,VectorWritable> ABtDenseOutJob.QRReducer.rhatCollector
           
 

Methods in org.apache.mahout.math.hadoop.stochasticsvd with parameters of type VectorWritable
protected  void VJob.VMapper.map(org.apache.hadoop.io.IntWritable key, VectorWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
           
protected  void YtYJob.YtYMapper.map(org.apache.hadoop.io.Writable key, VectorWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
           
protected  void BtJob.BtMapper.map(org.apache.hadoop.io.Writable key, VectorWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
          We maintain A and QtHat inputs partitioned the same way, so we essentially are performing map-side merge here of A and QtHats except QtHat is stored not row-wise but block-wise.
protected  void ABtDenseOutJob.ABtMapper.map(org.apache.hadoop.io.Writable key, VectorWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
           
protected  void ABtJob.ABtMapper.map(org.apache.hadoop.io.Writable key, VectorWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
           
protected  void QJob.QMapper.map(org.apache.hadoop.io.Writable key, VectorWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
           
protected  void UJob.UMapper.map(org.apache.hadoop.io.Writable key, VectorWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
           
 

Method parameters in org.apache.mahout.math.hadoop.stochasticsvd with type arguments of type VectorWritable
protected  void YtYJob.YtYReducer.reduce(org.apache.hadoop.io.IntWritable key, Iterable<VectorWritable> values, org.apache.hadoop.mapreduce.Reducer.Context arg2)
           
 

Uses of VectorWritable in org.apache.mahout.math.hadoop.stochasticsvd.qr
 

Constructor parameters in org.apache.mahout.math.hadoop.stochasticsvd.qr with type arguments of type VectorWritable
QRFirstStep(org.apache.hadoop.conf.Configuration jobConf, org.apache.hadoop.mapred.OutputCollector<? super org.apache.hadoop.io.Writable,? super DenseBlockWritable> qtHatOut, org.apache.hadoop.mapred.OutputCollector<? super org.apache.hadoop.io.Writable,? super VectorWritable> rHatOut)
           
QRLastStep(Iterator<DenseBlockWritable> qHatInput, Iterator<VectorWritable> rHatInput, int blockNum)
           
 

Uses of VectorWritable in org.apache.mahout.vectorizer.common
 

Method parameters in org.apache.mahout.vectorizer.common with type arguments of type VectorWritable
protected  void PartialVectorMergeReducer.reduce(org.apache.hadoop.io.WritableComparable<?> key, Iterable<VectorWritable> values, org.apache.hadoop.mapreduce.Reducer.Context context)
           
 

Uses of VectorWritable in org.apache.mahout.vectorizer.pruner
 

Method parameters in org.apache.mahout.vectorizer.pruner with type arguments of type VectorWritable
protected  void WordsPrunerReducer.reduce(org.apache.hadoop.io.WritableComparable<?> key, Iterable<VectorWritable> values, org.apache.hadoop.mapreduce.Reducer.Context context)
           
protected  void PrunedPartialVectorMergeReducer.reduce(org.apache.hadoop.io.WritableComparable<?> key, Iterable<VectorWritable> values, org.apache.hadoop.mapreduce.Reducer.Context context)
           
 

Uses of VectorWritable in org.apache.mahout.vectorizer.term
 

Methods in org.apache.mahout.vectorizer.term with parameters of type VectorWritable
protected  void TermDocumentCountMapper.map(org.apache.hadoop.io.WritableComparable<?> key, VectorWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
           
 

Uses of VectorWritable in org.apache.mahout.vectorizer.tfidf
 

Method parameters in org.apache.mahout.vectorizer.tfidf with type arguments of type VectorWritable
protected  void TFIDFPartialVectorReducer.reduce(org.apache.hadoop.io.WritableComparable<?> key, Iterable<VectorWritable> values, org.apache.hadoop.mapreduce.Reducer.Context context)
           
 



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