marf.Classification.Distance
Class MahalanobisDistance

java.lang.Object
  marf.Storage.StorageManager
      marf.Classification.Classification
          marf.Classification.Distance.Distance
              marf.Classification.Distance.MahalanobisDistance

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, IClassification, IStorageManager

public class MahalanobisDistance
extends Distance

Mahalanobis Distance Classification Module.

NOTE: Implemented as equivalent to Euclidean Distance in 0.2.0, i.e. the Covariance matrix is always an Indentity one.

$Id: MahalanobisDistance.java,v 1.23 2006/12/11 22:56:34 mokhov Exp $

Since:

0.2.0

Version:

$Revision: 1.23 $

Author:

Serguei Mokhov

See Also:

Serialized Form

Field Summary

Fields inherited from class marf.Classification.Classification

adFeatureVector, oFeatureExtraction, oResultSet, oTrainingSet

Fields inherited from class marf.Storage.StorageManager

bDumpOnNotFound, iCurrentDumpMode, oObjectToSerialize, strFilename

Fields inherited from interface marf.Classification.IClassification

MARF_INTERFACE_CODE_REVISION

Fields inherited from interface marf.Storage.IStorageManager

DUMP_BINARY, DUMP_CSV_TEXT, DUMP_GZIP_BINARY, DUMP_HTML, DUMP_SQL, DUMP_XML, MARF_INTERFACE_CODE_REVISION, STORAGE_FILE_EXTENSIONS

Constructor Summary

MahalanobisDistance(IFeatureExtraction poFeatureExtraction)
MahalanobisDistance Constructor.

Method Summary

double	distance(double[] paVector1, double[] paVector2) Partial MahalanobisDistance implementation.
static java.lang.String	getMARFSourceCodeRevision() Retrieves class' revision.

Methods inherited from class marf.Classification.Distance.Distance

classify, getResult

Methods inherited from class marf.Classification.Classification

classify, clone, dump, getFeatureExtraction, getResultSet, getTrainingSetFilename, loadTrainingSet, restore, setFeatureExtraction, train, train

Methods inherited from class marf.Storage.StorageManager

backSynchronizeObject, dumpBinary, dumpCSV, dumpGzipBinary, dumpHTML, dumpSQL, dumpXML, enableDumpOnNotFound, equals, getDefaultExtension, getDefaultExtension, getDumpMode, getFilename, getObjectToSerialize, hashCode, restoreBinary, restoreCSV, restoreGzipBinary, restoreHTML, restoreSQL, restoreXML, setDumpMode, setFilename, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

MahalanobisDistance

public MahalanobisDistance(IFeatureExtraction poFeatureExtraction)

MahalanobisDistance Constructor.

Parameters:

poFeatureExtraction - FeatureExtraction module reference

Method Detail

distance

public final double distance(double[] paVector1,
                             double[] paVector2)

Partial MahalanobisDistance implementation.

Specified by:

distance in class Distance

Parameters:

paVector1 - first vector to compare

paVector2 - second vector to compare

Returns:

Mahalanobis distance between two feature vectors

getMARFSourceCodeRevision

public static java.lang.String getMARFSourceCodeRevision()

Retrieves class' revision.

Returns:

revision string

Since:

0.3.0.2