com.itemanalysis.psychometrics.kernel

Class LikelihoodCrossValidation

java.lang.Object

com.itemanalysis.psychometrics.kernel.LikelihoodCrossValidation

All Implemented Interfaces:

Bandwidth, org.apache.commons.math3.analysis.UnivariateFunction

public class LikelihoodCrossValidation
extends java.lang.Object
implements Bandwidth, org.apache.commons.math3.analysis.UnivariateFunction

See Silverman (1986, p. 53). Silverman, B. W. (1986). Density estimation for statistics and data analysis. Boca Raton, FL: Chapman Hall.

Constructor Summary

Constructors

Constructor and Description
LikelihoodCrossValidation(KernelFunction kernel, double[] x)

Method Summary

Modifier and Type	Method and Description
double	getAdjustmentFactor() The bandwidth is multiplied by teh adjustment factor to increase or decrease smoothing.
double	value() The value of teh bandwidth
double	value(double h)

Methods inherited from class java.lang.Object

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

Constructor Detail

LikelihoodCrossValidation

public LikelihoodCrossValidation(KernelFunction kernel,
                                 double[] x)

Method Detail

value

public double value(double h)

Specified by:

value in interface org.apache.commons.math3.analysis.UnivariateFunction

value

public double value()

Description copied from interface: Bandwidth

The value of teh bandwidth

Specified by:

value in interface Bandwidth

Returns:

getAdjustmentFactor

public double getAdjustmentFactor()

Description copied from interface: Bandwidth

The bandwidth is multiplied by teh adjustment factor to increase or decrease smoothing. This number must be greater than 0.

Specified by:

getAdjustmentFactor in interface Bandwidth

Returns:

adjustment factor