org.apache.mahout.math.hadoop.stochasticsvd

Class VJob

java.lang.Object

org.apache.mahout.math.hadoop.stochasticsvd.VJob

public class VJob
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	VJob.VMapper

Field Summary

Fields

Modifier and Type	Field and Description
static String	PROP_SQ_PATH
static String	PROP_XI_PATH

Constructor Summary

Constructors

Constructor and Description
VJob()

Method Summary

Methods

Modifier and Type	Method and Description
void	run(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.fs.Path inputPathBt, org.apache.hadoop.fs.Path xiPath, org.apache.hadoop.fs.Path sqPath, org.apache.hadoop.fs.Path inputUHatPath, org.apache.hadoop.fs.Path inputSigmaPath, org.apache.hadoop.fs.Path outputPath, int k, int numReduceTasks, org.apache.mahout.math.hadoop.stochasticsvd.SSVDSolver.OutputScalingEnum outputScaling)
void	waitForCompletion()

Methods inherited from class java.lang.Object

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

Field Detail

PROP_SQ_PATH

public static final String PROP_SQ_PATH

See Also:

Constant Field Values

PROP_XI_PATH

public static final String PROP_XI_PATH

See Also:

Constant Field Values

Constructor Detail

VJob

public VJob()

Method Detail

run

public void run(org.apache.hadoop.conf.Configuration conf,
       org.apache.hadoop.fs.Path inputPathBt,
       org.apache.hadoop.fs.Path xiPath,
       org.apache.hadoop.fs.Path sqPath,
       org.apache.hadoop.fs.Path inputUHatPath,
       org.apache.hadoop.fs.Path inputSigmaPath,
       org.apache.hadoop.fs.Path outputPath,
       int k,
       int numReduceTasks,
       org.apache.mahout.math.hadoop.stochasticsvd.SSVDSolver.OutputScalingEnum outputScaling)
         throws ClassNotFoundException,
                InterruptedException,
                IOException

Parameters:

conf -

inputPathBt -

xiPath - PCA row mean (MAHOUT-817, to fix B')

sqPath - sq (MAHOUT-817, to fix B')

inputUHatPath -

inputSigmaPath -

outputPath -

k -

numReduceTasks -

outputScaling - output scaling: apply Sigma, or Sigma^0.5, or none

Throws:

ClassNotFoundException

InterruptedException

IOException

waitForCompletion

public void waitForCompletion()
                       throws IOException,
                              ClassNotFoundException,
                              InterruptedException

Throws:

IOException

ClassNotFoundException

InterruptedException