org.jamesframework.ext.problems.objectives.evaluations

Class NormalizedEvaluation

java.lang.Object

org.jamesframework.ext.problems.objectives.evaluations.NormalizedEvaluation

All Implemented Interfaces:

Evaluation

public class NormalizedEvaluation
extends Object
implements Evaluation

Normalizes the value of an arbitrary evaluation from a given interval [min, max] to [0, 1]. Normalization is linear, using the formula \[ normalized = \frac{value - min}{max - min}. \]

Author:

Herman De Beukelaer

Constructor Summary

Constructors

Constructor and Description
NormalizedEvaluation(Evaluation eval, double min, double max) Create a normalized evaluation that wraps the given evaluation and normalizes its values from [min, max] to [0, 1].

Method Summary

Modifier and Type	Method and Description
Evaluation	getUnnormalizedEvaluation() Get the original, unnormalized evaluation.
double	getValue() Calculates normalized evaluation in [0, 1].
String	toString() Format value as string.

Methods inherited from class java.lang.Object

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

Constructor Detail

NormalizedEvaluation

public NormalizedEvaluation(Evaluation eval,
                            double min,
                            double max)

Create a normalized evaluation that wraps the given evaluation and normalizes its values from [min, max] to [0, 1].

Parameters:

eval - original, unnormalized evaluation

min - lower bound of normalization interval

max - upper bound of normalization interval

Method Detail

getValue

public double getValue()

Calculates normalized evaluation in [0, 1].

Specified by:

getValue in interface Evaluation

Returns:

normalized evaluation

getUnnormalizedEvaluation

public Evaluation getUnnormalizedEvaluation()

Get the original, unnormalized evaluation.

Returns:

unnormalized evaluation

toString

public String toString()

Format value as string. Unnormalized value is included between brackets.

Overrides:

toString in class Object

Returns:

string version of normalized and original value