Package weka.estimators

Class MahalanobisEstimator

java.lang.Object

weka.estimators.Estimator

weka.estimators.MahalanobisEstimator

All Implemented Interfaces:

Serializable, Cloneable, CapabilitiesHandler, CapabilitiesIgnorer, OptionHandler, RevisionHandler, IncrementalEstimator

public class MahalanobisEstimator
extends Estimator
implements IncrementalEstimator

Simple probability estimator that places a single normal distribution over the observed values.

Version:

$Revision: 15521 $

Author:

Len Trigg (trigg@cs.waikato.ac.nz)

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
MahalanobisEstimator(Matrix covariance, double constDelta, double valueMean)	Constructor

Method Summary

Modifier and Type	Method	Description
void	addValue(double data, double weight)	Add a new data value to the current estimator.
Capabilities	getCapabilities()	Returns default capabilities of the classifier.
double	getProbability(double data)	Get a probability estimate for a value
String	getRevision()	Returns the revision string.
static void	main(String[] argv)	Main method for testing this class.
String	toString()	Display a representation of this estimator

Methods inherited from class weka.estimators.Estimator

addValues, addValues, addValues, addValues, buildEstimator, buildEstimator, clone, debugTipText, doNotCheckCapabilitiesTipText, equals, forName, getDebug, getDoNotCheckCapabilities, getOptions, listOptions, makeCopies, makeCopy, setDebug, setDoNotCheckCapabilities, setOptions, testCapabilities

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

MahalanobisEstimator

public MahalanobisEstimator(Matrix covariance,
 double constDelta,
 double valueMean)

Constructor

Parameters:

covariance -

constDelta -

valueMean -

Method Details

addValue

public void addValue(double data,
 double weight)

Add a new data value to the current estimator. Does nothing because the data is provided in the constructor.

Specified by:

addValue in interface IncrementalEstimator

Overrides:

addValue in class Estimator

Parameters:

data - the new data value

weight - the weight assigned to the data value

getProbability

public double getProbability(double data)

Get a probability estimate for a value

Specified by:

getProbability in class Estimator

Parameters:

data - the value to estimate the probability of

Returns:

the estimated probability of the supplied value

toString

public String toString()

Display a representation of this estimator

Overrides:

toString in class Object

getCapabilities

public Capabilities getCapabilities()

Returns default capabilities of the classifier.

Specified by:

getCapabilities in interface CapabilitiesHandler

Overrides:

getCapabilities in class Estimator

Returns:

the capabilities of this classifier

See Also:

• Capabilities

getRevision

public String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Overrides:

getRevision in class Estimator

Returns:

the revision

main

public static void main(String[] argv)

Main method for testing this class.

Parameters:

argv - should contain a sequence of numeric values