de.lmu.ifi.dbs.elki.utilities.scaling

Class GammaScaling

java.lang.Object

de.lmu.ifi.dbs.elki.utilities.scaling.GammaScaling

All Implemented Interfaces:

ScalingFunction, StaticScalingFunction

public class GammaScaling
extends Object
implements StaticScalingFunction

Non-linear scaling function using a Gamma curve.

Author:

Erich Schubert, Remigius Wojdanowski

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	GammaScaling.Parameterizer Parameterization class.

Field Summary

Fields

Modifier and Type	Field and Description
private double	gamma Gamma value.
static OptionID	GAMMA_ID OptionID for the gamma value.

Constructor Summary

Constructors

Constructor and Description
GammaScaling() Constructor without options.
GammaScaling(double gamma) Constructor with Gamma value.

Method Summary

Modifier and Type	Method and Description
double	getMax() Get maximum resulting value.
double	getMin() Get minimum resulting value.
double	getScaled(double d) Transform a given value using the scaling function.

Methods inherited from class java.lang.Object

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

Field Detail

GAMMA_ID

public static final OptionID GAMMA_ID

OptionID for the gamma value.

gamma

private double gamma

Gamma value.

Constructor Detail

GammaScaling

public GammaScaling()

Constructor without options.

GammaScaling

public GammaScaling(double gamma)

Constructor with Gamma value.

Parameters:

gamma - Gamma value.

Method Detail

getScaled

public double getScaled(double d)

Description copied from interface: ScalingFunction

Transform a given value using the scaling function.

Specified by:

getScaled in interface ScalingFunction

Parameters:

d - Original value

Returns:

Scaled value

getMin

public double getMin()

Description copied from interface: ScalingFunction

Get minimum resulting value. May be Double.NaN or Double.NEGATIVE_INFINITY.

Specified by:

getMin in interface ScalingFunction

Returns:

Minimum resulting value.

getMax

public double getMax()

Description copied from interface: ScalingFunction

Get maximum resulting value. May be Double.NaN or Double.POSITIVE_INFINITY.

Specified by:

getMax in interface ScalingFunction

Returns:

Maximum resulting value.