marf.FeatureExtraction.MinMaxAmplitudes
Class MinMaxAmplitudes

java.lang.Object
  marf.Storage.StorageManager
      marf.FeatureExtraction.FeatureExtraction
          marf.FeatureExtraction.MinMaxAmplitudes.MinMaxAmplitudes

All Implemented Interfaces:

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

public class MinMaxAmplitudes
extends FeatureExtraction

Min/Max Amplitudes.

Extracts N minimum and X maximum amplitudes from a sample as features. If incoming sample array's length is less than N + X, it is adjusted to be N + X long with the length/2 value repeated N + X - length times.

TODO: needs improvement to select different amplitudes as we don't want 20 the same maximums or minimums if others are available.

$Id: MinMaxAmplitudes.java,v 1.15 2007/12/18 03:45:41 mokhov Exp $

Since:

0.3.0.2

Version:

$Revision: 1.15 $

Author:

Serguei Mokhov

See Also:

Serialized Form

Field Summary

static int	MAX_AMPLITUDES Default number of maximums (amplitudes) to collect.
static int	MIN_AMPLITUDES Default number of minimums (amplitudes) to collect.

Fields inherited from class marf.FeatureExtraction.FeatureExtraction

adFeatures, oFeatureSet, oPreprocessing

Fields inherited from class marf.Storage.StorageManager

bDumpOnNotFound, iCurrentDumpMode, oObjectToSerialize, strFilename

Fields inherited from interface marf.FeatureExtraction.IFeatureExtraction

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

MinMaxAmplitudes(IPreprocessing poPreprocessing)
MinMaxAmplitudes Constructor.

Method Summary

boolean	extractFeatures(double[] padSampleData) MinMaxAmplitudes implementation of extractFeatures().
static java.lang.String	getMARFSourceCodeRevision() Returns source code revision information.
java.lang.String	toString() Creates String representation of the inner feature vector.

Methods inherited from class marf.FeatureExtraction.FeatureExtraction

backSynchronizeObject, clone, extractFeatures, getFeaturesArray, getPreprocessing, setPreprocessing

Methods inherited from class marf.Storage.StorageManager

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

Methods inherited from class java.lang.Object

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

Field Detail

MIN_AMPLITUDES

public static final int MIN_AMPLITUDES

Default number of minimums (amplitudes) to collect.

See Also:

Constant Field Values

MAX_AMPLITUDES

public static final int MAX_AMPLITUDES

Default number of maximums (amplitudes) to collect.

See Also:

Constant Field Values

Constructor Detail

MinMaxAmplitudes

public MinMaxAmplitudes(IPreprocessing poPreprocessing)

MinMaxAmplitudes Constructor.

Parameters:

poPreprocessing - Preprocessing module reference

Method Detail

extractFeatures

public final boolean extractFeatures(double[] padSampleData)
                              throws FeatureExtractionException

MinMaxAmplitudes implementation of extractFeatures(). As of 0.3.0.6 the generic pipelined extractFeatures() refactored out to FeatureExtraction.

Parameters:

padSampleData - the sample to extract features from

Returns:

true if features were extracted, false otherwise

Throws:

FeatureExtractionException

Since:

0.3.0.6

See Also:

IFeatureExtraction.extractFeatures(double[])

toString

public java.lang.String toString()

Creates String representation of the inner feature vector.

Overrides:

toString in class StorageManager

Returns:

min/max data in String format

See Also:

Object.toString()

getMARFSourceCodeRevision

public static java.lang.String getMARFSourceCodeRevision()

Returns source code revision information.

Returns:

revision string