de.lmu.ifi.dbs.elki.math.linearalgebra.pca
Class NormalizingEigenPairFilter

java.lang.Object
  de.lmu.ifi.dbs.elki.logging.AbstractLoggable
      de.lmu.ifi.dbs.elki.utilities.optionhandling.AbstractParameterizable
          de.lmu.ifi.dbs.elki.math.linearalgebra.pca.NormalizingEigenPairFilter

All Implemented Interfaces:

EigenPairFilter, Parameterizable

public class NormalizingEigenPairFilter
extends AbstractParameterizable
implements EigenPairFilter

The NormalizingEigenPairFilter normalizes all eigenvectors s.t. * eigenvalue = 1, where <,> is the standard dot product

Author:

Simon Paradies

Field Summary

Fields inherited from class de.lmu.ifi.dbs.elki.utilities.optionhandling.AbstractParameterizable

optionHandler

Fields inherited from class de.lmu.ifi.dbs.elki.logging.AbstractLoggable

debug, logger

Constructor Summary

NormalizingEigenPairFilter()
Provides a new EigenPairFilter that normalizes all eigenvectors s.t.

Method Summary

FilteredEigenPairs	filter(SortedEigenPairs eigenPairs) Filters the specified eigenpairs into strong and weak eigenpairs, where strong eigenpairs having high variances and weak eigenpairs having small variances.
private void	normalizeEigenPair(EigenPair eigenPair) Normalizes an eigenpair consisting of eigenvector v and eigenvalue e s.t.
String	shortDescription() Returns a short description of the class.

Methods inherited from class de.lmu.ifi.dbs.elki.utilities.optionhandling.AbstractParameterizable

addOption, addParameterizable, addParameterizable, checkGlobalParameterConstraints, collectOptions, getAttributeSettings, getParameters, rememberParametersExcept, removeOption, removeParameterizable, setParameters

Methods inherited from class de.lmu.ifi.dbs.elki.logging.AbstractLoggable

debugFine, debugFiner, debugFinest, exception, progress, verbose, warning

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.lmu.ifi.dbs.elki.utilities.optionhandling.Parameterizable

checkGlobalParameterConstraints, collectOptions, getParameters, setParameters

Constructor Detail

NormalizingEigenPairFilter

public NormalizingEigenPairFilter()

Provides a new EigenPairFilter that normalizes all eigenvectors s.t. eigenvalue * = 1, where <,> is the standard dot product

Method Detail

filter

public FilteredEigenPairs filter(SortedEigenPairs eigenPairs)

Description copied from interface: EigenPairFilter

Filters the specified eigenpairs into strong and weak eigenpairs, where strong eigenpairs having high variances and weak eigenpairs having small variances.

Specified by:

filter in interface EigenPairFilter

Parameters:

eigenPairs - the eigenPairs (i.e. the eigenvectors and

Returns:

the filtered eigenpairs

normalizeEigenPair

private void normalizeEigenPair(EigenPair eigenPair)

Normalizes an eigenpair consisting of eigenvector v and eigenvalue e s.t. * e = 1

Parameters:

eigenPair - the eigenpair to be normalized

shortDescription

public String shortDescription()

Description copied from class: AbstractParameterizable

Returns a short description of the class.

Specified by:

shortDescription in interface Parameterizable

Overrides:

shortDescription in class AbstractParameterizable

Returns:

Description of the class