org.apache.mahout.clustering.topdown.postprocessor

Class ClusterOutputPostProcessorDriver

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.mahout.common.AbstractJob

org.apache.mahout.clustering.topdown.postprocessor.ClusterOutputPostProcessorDriver

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable, org.apache.hadoop.util.Tool

public final class ClusterOutputPostProcessorDriver
extends AbstractJob

Post processes the output of clustering algorithms and groups them into respective clusters. Ideal to be used for top down clustering. It can also be used if the clustering output needs to be grouped into their respective clusters.

Field Summary

Fields inherited from class org.apache.mahout.common.AbstractJob

argMap, inputFile, inputPath, outputFile, outputPath, tempPath

Constructor Summary

Constructors

Constructor and Description
ClusterOutputPostProcessorDriver()

Method Summary

Modifier and Type	Method and Description
static void	main(String[] args)
static void	run(org.apache.hadoop.fs.Path input, org.apache.hadoop.fs.Path output, boolean runSequential) Post processes the output of clustering algorithms and groups them into respective clusters.
int	run(String[] args) CLI to run clustering post processor.

Methods inherited from class org.apache.mahout.common.AbstractJob

addFlag, addInputOption, addOption, addOption, addOption, addOption, addOutputOption, buildOption, buildOption, getAnalyzerClassFromOption, getCLIOption, getConf, getDimensions, getFloat, getFloat, getGroup, getInputFile, getInputPath, getInt, getInt, getOption, getOption, getOption, getOptions, getOutputFile, getOutputPath, getOutputPath, getTempPath, getTempPath, hasOption, keyFor, maybePut, parseArguments, parseArguments, parseDirectories, prepareJob, prepareJob, prepareJob, prepareJob, setConf, setS3SafeCombinedInputPath, shouldRunNextPhase

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ClusterOutputPostProcessorDriver

public ClusterOutputPostProcessorDriver()

Method Detail

run

public int run(String[] args)
        throws Exception

CLI to run clustering post processor. The input to post processor is the ouput path specified to the clustering.

Throws:

Exception

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception

run

public static void run(org.apache.hadoop.fs.Path input,
                       org.apache.hadoop.fs.Path output,
                       boolean runSequential)
                throws IOException,
                       InterruptedException,
                       ClassNotFoundException

Post processes the output of clustering algorithms and groups them into respective clusters. Each cluster's vectors are written into a directory named after its clusterId.

Parameters:

input - The output path provided to the clustering algorithm, whose would be post processed. Hint: The path of the directory containing clusters-*-final and clusteredPoints.

output - The post processed data would be stored at this path.

runSequential - If set to true, post processes it sequentially, else, uses. MapReduce. Hint: If the clustering was done sequentially, make it sequential, else vice versa.

Throws:

IOException

InterruptedException

ClassNotFoundException