org.apache.mahout.utils.vectors.text.term
Class TermCountReducer
java.lang.Object
org.apache.hadoop.mapred.MapReduceBase
org.apache.mahout.utils.vectors.text.term.TermCountReducer
- All Implemented Interfaces:
- java.io.Closeable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable>
public class TermCountReducer
- extends org.apache.hadoop.mapred.MapReduceBase
- implements org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable>
Can also be used as a local Combiner. This accumulates all the words and the weights and sums them up.
Method Summary |
void |
configure(org.apache.hadoop.mapred.JobConf job)
|
void |
reduce(org.apache.hadoop.io.Text key,
java.util.Iterator<org.apache.hadoop.io.LongWritable> values,
org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable> output,
org.apache.hadoop.mapred.Reporter reporter)
|
Methods inherited from class org.apache.hadoop.mapred.MapReduceBase |
close |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface java.io.Closeable |
close |
TermCountReducer
public TermCountReducer()
reduce
public void reduce(org.apache.hadoop.io.Text key,
java.util.Iterator<org.apache.hadoop.io.LongWritable> values,
org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable> output,
org.apache.hadoop.mapred.Reporter reporter)
throws java.io.IOException
- Specified by:
reduce
in interface org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable>
- Throws:
java.io.IOException
configure
public void configure(org.apache.hadoop.mapred.JobConf job)
- Specified by:
configure
in interface org.apache.hadoop.mapred.JobConfigurable
- Overrides:
configure
in class org.apache.hadoop.mapred.MapReduceBase
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