de.lmu.ifi.dbs.elki.math.statistics
Class EpanechnikovKernelDensityFunction

java.lang.Object
  de.lmu.ifi.dbs.elki.math.statistics.EpanechnikovKernelDensityFunction

All Implemented Interfaces:

KernelDensityFunction

public final class EpanechnikovKernelDensityFunction
extends Object
implements KernelDensityFunction

Epanechnikov kernel density estimator.

Author:

Erich Schubert

Field Summary

static EpanechnikovKernelDensityFunction

KERNEL Static instance.

Constructor Summary

private

EpanechnikovKernelDensityFunction() Private, empty constructor.

Method Summary

double

density(double delta) Density contribution of a point at the given relative distance delta.

Methods inherited from class java.lang.Object

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

Field Detail

KERNEL

public static final EpanechnikovKernelDensityFunction KERNEL

Static instance.

Constructor Detail

EpanechnikovKernelDensityFunction

private EpanechnikovKernelDensityFunction()

Private, empty constructor. Use the static instance!

Method Detail

density

public double density(double delta)

Description copied from interface: KernelDensityFunction

Density contribution of a point at the given relative distance delta.

Specified by:

density in interface KernelDensityFunction

Parameters:

delta - Relative distance

Returns:

density contribution