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

All Superinterfaces:

InspectionUtilFrequentlyScanned, Parameterizable

All Known Subinterfaces:

OutlierScalingFunction, StaticScalingFunction

All Known Implementing Classes:

ClipScaling, GammaScaling, HeDESNormalizationOutlierScaling, IdentityScaling, LinearScaling, MinusLogGammaScaling, MinusLogScaling, MinusLogStandardDeviationScaling, MixtureModelOutlierScalingFunction, MultiplicativeInverseScaling, OutlierGammaScaling, OutlierLinearScaling, OutlierMinusLogScaling, OutlierSqrtScaling, RankingPseudoOutlierScaling, SigmoidOutlierScalingFunction, SqrtStandardDeviationScaling, StandardDeviationScaling, TopKOutlierScaling

public interface ScalingFunction
extends Parameterizable

Interface for scaling functions used e.g. by outlier evaluation such as Histograms and visualization. When using outlier scaling functions, make sure to invoke prepare to invoke the preprocessing step! Outside of an outlier context, you probably want to use StaticScalingFunction instead, which may not require a prepare statement.

Method Summary

double	getMax() Get maximum resulting value.
double	getMin() Get minimum resulting value.
double	getScaled(double value) Transform a given value using the scaling function.

Method Detail

getScaled

double getScaled(double value)

Transform a given value using the scaling function.

Parameters:

value - Original value

Returns:

Scaled value

getMin

double getMin()

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

Returns:

Minimum resulting value.

getMax

double getMax()

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

Returns:

Maximum resulting value.