de.lmu.ifi.dbs.elki.varianceanalysis
Class LinearLocalPCA<V extends RealVector<V,?>>

java.lang.Object
  de.lmu.ifi.dbs.elki.logging.AbstractLoggable
      de.lmu.ifi.dbs.elki.utilities.optionhandling.AbstractParameterizable
          de.lmu.ifi.dbs.elki.varianceanalysis.AbstractPCA
              de.lmu.ifi.dbs.elki.varianceanalysis.LocalPCA<V>
                  de.lmu.ifi.dbs.elki.varianceanalysis.LinearLocalPCA<V>

All Implemented Interfaces:

Loggable, Parameterizable, PCA

public class LinearLocalPCA<V extends RealVector<V,?>>
extends LocalPCA<V>

Performs a linear local PCA based on the covariance matrices of given objects.

Author:

Elke Achtert

Field Summary

Fields inherited from class de.lmu.ifi.dbs.elki.varianceanalysis.LocalPCA

BIG_ID, SMALL_ID

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

Constructor Summary

LinearLocalPCA()

Method Summary

protected Matrix

pcaMatrix(Database<V> database, Collection<Integer> ids) Returns the covariance matrix of the specified ids.

Methods inherited from class de.lmu.ifi.dbs.elki.varianceanalysis.LocalPCA

adapatedStrongEigenvectors, dissimilarityMatrix, getCorrelationDimension, run, selectionMatrixOfStrongEigenvectors, selectionMatrixOfWeakEigenvectors, setParameters, similarityMatrix

Methods inherited from class de.lmu.ifi.dbs.elki.varianceanalysis.AbstractPCA

determineEigenPairs, getAttributeSettings, getEigenvalues, getEigenvectors, getStrongEigenvalues, getStrongEigenvectors, getWeakEigenvalues, getWeakEigenvectors

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

addOption, checkGlobalParameterConstraints, deleteOption, description, description, description, getParameters, getParameterValue, getPossibleOptions, inlineDescription, isSet, setParameters

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

debugFine, debugFiner, debugFinest, exception, message, progress, progress, progress, verbose, 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, description, getParameters, getPossibleOptions, inlineDescription

Constructor Detail

LinearLocalPCA

public LinearLocalPCA()

Method Detail

pcaMatrix

protected Matrix pcaMatrix(Database<V> database,
                           Collection<Integer> ids)

Returns the covariance matrix of the specified ids.

Specified by:

pcaMatrix in class LocalPCA<V extends RealVector<V,?>>

Parameters:

database - the database holding the objects

ids - the list of the object ids for which the matrix should be determined

Returns:

he matrix that is used for performaing a pca

See Also:

LocalPCA.pcaMatrix(de.lmu.ifi.dbs.elki.database.Database, java.util.Collection)