org.uma.jmetal.util

Class NormalizeUtils

java.lang.Object

org.uma.jmetal.util.NormalizeUtils

public class NormalizeUtils
extends Object

Class responsible for normalizing values

Since:

2018-12-16

Version:

1.0.0

Author:

Thiago Ferreira

Method Summary

Modifier and Type	Method and Description
static double	normalize(double value, double min, double max) It normalizes a value in [0,1] given a min and max value.
static double	normalize(double value, double minRangeValue, double maxRangeValue, double min, double max) It normalizes a value in a range [a, b] given a min and max value.

Methods inherited from class java.lang.Object

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

Method Detail

normalize

public static double normalize(double value,
                               double minRangeValue,
                               double maxRangeValue,
                               double min,
                               double max)

It normalizes a value in a range [a, b] given a min and max value. The equation used here were based on the following links:

• https://stats.stackexchange.com/a/281165
• https://stats.stackexchange.com/a/178629
• https://en.wikipedia.org/wiki/Normalization_(statistics)
• https://en.wikipedia.org/wiki/Feature_scaling

Parameters:

value - value number to be normalized

minRangeValue - the minimum value for the range

maxRangeValue - the maximum value for the range

min - minimum value that value can take on

max - maximum value that value can take on

Returns:

the normalized number

normalize

public static double normalize(double value,
                               double min,
                               double max)

It normalizes a value in [0,1] given a min and max value.

Parameters:

value - number to be normalized

min - minimum value that value can take on

max - maximum value that value can take on

Returns:

the normalized number