org.apache.mahout.vectorizer.term
Class TermDocumentCountMapper

java.lang.Object
  extended by org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.WritableComparable<?>,VectorWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.LongWritable>
      extended by org.apache.mahout.vectorizer.term.TermDocumentCountMapper

public class TermDocumentCountMapper
extends org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.WritableComparable<?>,VectorWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.LongWritable>

TextVectorizer Document Frequency Count Mapper. Outputs 1 for each feature


Nested Class Summary
 
Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Mapper
org.apache.hadoop.mapreduce.Mapper.Context
 
Constructor Summary
TermDocumentCountMapper()
           
 
Method Summary
protected  void map(org.apache.hadoop.io.WritableComparable<?> key, VectorWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
           
 
Methods inherited from class org.apache.hadoop.mapreduce.Mapper
cleanup, run, setup
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

TermDocumentCountMapper

public TermDocumentCountMapper()
Method Detail

map

protected void map(org.apache.hadoop.io.WritableComparable<?> key,
                   VectorWritable value,
                   org.apache.hadoop.mapreduce.Mapper.Context context)
            throws IOException,
                   InterruptedException
Overrides:
map in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.WritableComparable<?>,VectorWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.LongWritable>
Throws:
IOException
InterruptedException


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