org.apache.mahout.clustering.spectral

Class UnitVectorizerJob

java.lang.Object

org.apache.mahout.clustering.spectral.UnitVectorizerJob

public final class UnitVectorizerJob
extends Object

Given a DistributedRowMatrix, this job normalizes each row to unit vector length. If the input is a matrix U, and the output is a matrix W, the job follows:

v_ij = u_ij / sqrt(sum_j(u_ij * u_ij))

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	UnitVectorizerJob.UnitVectorizerMapper

Method Summary

Modifier and Type	Method and Description
static void	runJob(org.apache.hadoop.fs.Path input, org.apache.hadoop.fs.Path output)

Methods inherited from class java.lang.Object

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

Method Detail

runJob

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

Throws:

IOException

InterruptedException

ClassNotFoundException