org.apache.mahout.classifier.bayes.mapreduce.bayes
Class BayesClassifierMapper
java.lang.Object
org.apache.hadoop.mapred.MapReduceBase
org.apache.mahout.classifier.bayes.mapreduce.bayes.BayesClassifierMapper
- All Implemented Interfaces:
- java.io.Closeable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,StringTuple,org.apache.hadoop.io.DoubleWritable>
public class BayesClassifierMapper
- extends org.apache.hadoop.mapred.MapReduceBase
- implements org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,StringTuple,org.apache.hadoop.io.DoubleWritable>
Reads the input train set(preprocessed using the BayesFileFormatter
).
Method Summary |
void |
configure(org.apache.hadoop.mapred.JobConf job)
|
void |
map(org.apache.hadoop.io.Text key,
org.apache.hadoop.io.Text value,
org.apache.hadoop.mapred.OutputCollector<StringTuple,org.apache.hadoop.io.DoubleWritable> output,
org.apache.hadoop.mapred.Reporter reporter)
Parallel Classification |
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 |
BayesClassifierMapper
public BayesClassifierMapper()
map
public void map(org.apache.hadoop.io.Text key,
org.apache.hadoop.io.Text value,
org.apache.hadoop.mapred.OutputCollector<StringTuple,org.apache.hadoop.io.DoubleWritable> output,
org.apache.hadoop.mapred.Reporter reporter)
throws java.io.IOException
- Parallel Classification
- Specified by:
map
in interface org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text,StringTuple,org.apache.hadoop.io.DoubleWritable>
- Parameters:
key
- The labelvalue
- the features (all unique) associated w/ this labeloutput
- The OutputCollector to write the results toreporter
- Reports status back to hadoop
- 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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