com.rapidminer.tools.math.distribution.kernel
Class GreedyKernelDistribution

java.lang.Object
  com.rapidminer.tools.math.distribution.ContinuousDistribution
      com.rapidminer.tools.math.distribution.kernel.KernelDistribution
          com.rapidminer.tools.math.distribution.kernel.GreedyKernelDistribution

All Implemented Interfaces:

Distribution, EmpiricalDistribution, java.io.Serializable

public class GreedyKernelDistribution
extends KernelDistribution

An updatable estimated kernel density distribution. Update strategy greedily creates and merges kernels and assigns value to these kernels.

Author:

Tobias Malbrecht

See Also:

Serialized Form

Field Summary

static long

serialVersionUID

Fields inherited from class com.rapidminer.tools.math.distribution.kernel.KernelDistribution

DEFAULT_BANDWIDTH

Constructor Summary

GreedyKernelDistribution()

GreedyKernelDistribution(double minBandwidth, int numberOfKernels)

Method Summary

java.lang.String	getAttributeName()
double	getLowerBound() This method returns a lower bound of values.
int	getNumberOfParameters() This should return the number of parameters defining this distribution
java.lang.String	getParameterName(int index) This method should return the name of the i-th parameter
double	getParameterValue(int index) This method should return the value of the i-th parameter
double	getProbability(double value) This method returns the density of the given distribution at the specified value.
double	getTotalWeight()
double	getUpperBound() This method returns an upper bound of possible values.
java.lang.String	toString() Should return an textual representation of the distribution.
void	update(double value)
void	update(double value, double weight)

Methods inherited from class com.rapidminer.tools.math.distribution.ContinuousDistribution

isContinuous, isDiscrete, mapValue

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.rapidminer.tools.math.distribution.Distribution

isContinuous, isDiscrete, mapValue

Field Detail

serialVersionUID

public static final long serialVersionUID

See Also:

Constant Field Values

Constructor Detail

GreedyKernelDistribution

public GreedyKernelDistribution()

GreedyKernelDistribution

public GreedyKernelDistribution(double minBandwidth,
                                int numberOfKernels)

Method Detail

update

public void update(double value,
                   double weight)

update

public void update(double value)

getAttributeName

public java.lang.String getAttributeName()

Specified by:

getAttributeName in interface Distribution

Overrides:

getAttributeName in class KernelDistribution

getNumberOfParameters

public int getNumberOfParameters()

Description copied from interface: Distribution

This should return the number of parameters defining this distribution

Specified by:

getNumberOfParameters in interface Distribution

Overrides:

getNumberOfParameters in class KernelDistribution

getParameterName

public java.lang.String getParameterName(int index)

Description copied from interface: Distribution

This method should return the name of the i-th parameter

Specified by:

getParameterName in interface Distribution

Overrides:

getParameterName in class KernelDistribution

getParameterValue

public double getParameterValue(int index)

Description copied from interface: Distribution

This method should return the value of the i-th parameter

Specified by:

getParameterValue in interface Distribution

Overrides:

getParameterValue in class KernelDistribution

getUpperBound

public double getUpperBound()

Description copied from class: ContinuousDistribution

This method returns an upper bound of possible values. This bound should be given by the distributions tail, for example bounds should contain 95% interval. Nominal distributions should return NaN.

Specified by:

getUpperBound in class ContinuousDistribution

getLowerBound

public double getLowerBound()

Description copied from class: ContinuousDistribution

This method returns a lower bound of values. This bound should be given by the distributions tail, for example bounds should contain 95% interval. Nominal distributions should return NaN.

Specified by:

getLowerBound in class ContinuousDistribution

getTotalWeight

public double getTotalWeight()

getProbability

public double getProbability(double value)

Description copied from interface: Distribution

This method returns the density of the given distribution at the specified value.

Specified by:

getProbability in interface Distribution

Specified by:

getProbability in class ContinuousDistribution

Parameters:

value - the value which density shall be returned

toString

public java.lang.String toString()

Description copied from interface: Distribution

Should return an textual representation of the distribution.

Specified by:

toString in interface Distribution

Overrides:

toString in class KernelDistribution