marf.Classification.Distance
Class HammingDistance

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

All Implemented Interfaces:

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

public class HammingDistance
extends Distance

Hamming Distance Classifier.

$Id: HammingDistance.java,v 1.2 2007/12/31 00:17:04 mokhov Exp $

Since:

0.3.0.6

Version:

$Revision: 1.2 $

Author:

Serguei Mokhov

See Also:

Serialized Form

Field Summary

protected double	dAllowedError
static double	DEFAULT_ALLOWED_ERROR Default allowed difference between two features of 0.01.
protected int	iDistanceType
static int	LENIENT_DOUBLE Indicates to compare double array elements leniently allowing some margin for error.
static int	STRICT_BITWISE Indicates to compare double array for hamming distance in true bitwise expansion (i.e.
static int	STRICT_DOUBLE Indicates to compare double array elements in strict equality (e.h.

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

HammingDistance(IFeatureExtraction poFeatureExtraction)
Hamming Distance Constructor.

Method Summary

double	distance(double[] padVector1, double[] padVector2) Hamming Distance 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

Field Detail

DEFAULT_ALLOWED_ERROR

public static final double DEFAULT_ALLOWED_ERROR

Default allowed difference between two features of 0.01.

See Also:

Constant Field Values

STRICT_DOUBLE

public static final int STRICT_DOUBLE

Indicates to compare double array elements in strict equality (e.h. using the == operator). This is the default.

See Also:

Constant Field Values

LENIENT_DOUBLE

public static final int LENIENT_DOUBLE

Indicates to compare double array elements leniently allowing some margin for error.

See Also:

Constant Field Values

STRICT_BITWISE

public static final int STRICT_BITWISE

Indicates to compare double array for hamming distance in true bitwise expansion (i.e. bitwise comparison).

See Also:

Constant Field Values

iDistanceType

protected int iDistanceType

dAllowedError

protected double dAllowedError

Constructor Detail

HammingDistance

public HammingDistance(IFeatureExtraction poFeatureExtraction)

Hamming Distance Constructor.

Parameters:

poFeatureExtraction - FeatureExtraction module reference

Method Detail

distance

public final double distance(double[] padVector1,
                             double[] padVector2)

Hamming Distance implementation.

Specified by:

distance in class Distance

Parameters:

padVector1 - first vector to compare

padVector2 - second vector to compare

Returns:

diff-distance between two feature vectors

getMARFSourceCodeRevision

public static java.lang.String getMARFSourceCodeRevision()

Retrieves class' revision.

Returns:

revision string