weka.estimators
Class MahalanobisEstimator

java.lang.Object
  |
  +--weka.estimators.MahalanobisEstimator

All Implemented Interfaces:

Estimator, java.io.Serializable

public class MahalanobisEstimator

extends java.lang.Object

implements Estimator

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

Version:

$Revision: 1.4 $

Author:

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

See Also:

Serialized Form

Constructor Summary

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

Method Summary

void	addValue(double data, double weight) Add a new data value to the current estimator.
double	getProbability(double data) Get a probability estimate for a value
static void	main(java.lang.String[] argv) Main method for testing this class.
java.lang.String	toString() Display a representation of this estimator

Methods inherited from class java.lang.Object

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

Constructor Detail

MahalanobisEstimator

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

Constructor

Method Detail

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 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 interface Estimator

Parameters:

data - the value to estimate the probability of

Returns:

the estimated probability of the supplied value

toString

public java.lang.String toString()

Display a representation of this estimator

Overrides:

toString in class java.lang.Object

main

public static void main(java.lang.String[] argv)

Main method for testing this class.

Parameters:

argv - should contain a sequence of numeric values