Package jeco.core.benchmarks.zdt

Class ZDT2

java.lang.Object

jeco.core.problem.Problem<Variable<Double>>

jeco.core.benchmarks.zdt.ZDT

jeco.core.benchmarks.zdt.ZDT2

public class ZDT2
extends ZDT

ZDT2 benchmark problem ZDT2 is a multi-objective optimization problem f1(x) = x1 f2(x) = g(x) * h(f1(x), g(x)) g(x) = 1 + 9 * (sum(xj) / (n-1)) h(f1, g) = 1 - (f1 / g)^2 xj in [0, 1] Pareto optimal front: convex

Field Summary

Fields inherited from class jeco.core.problem.Problem

INFINITY, lowerBound, numberOfObjectives, numberOfVariables, upperBound

Constructor Summary

Constructors

Constructor	Description
ZDT2()	Constructor
ZDT2(Integer numberOfVariables)	Constructor

Method Summary

Modifier and Type	Method	Description
ZDT2	clone()
Solutions<Variable<Double>>	computeParetoOptimalFront(int n)	Compute the Pareto optimal front
void	evaluate(Solution<Variable<Double>> solution)	Evaluate a single solution

Methods inherited from class jeco.core.benchmarks.zdt.ZDT

evaluate, newRandomSetOfSolutions

Methods inherited from class jeco.core.problem.Problem

getLowerBound, getNumberOfObjectives, getNumberOfVariables, getUpperBound

Methods inherited from class java.lang.Object

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

Constructor Details

ZDT2

public ZDT2(Integer numberOfVariables)

Constructor

Parameters:

numberOfVariables - Number of variables

ZDT2

public ZDT2()

Constructor

Method Details

evaluate

public void evaluate(Solution<Variable<Double>> solution)

Description copied from class: ZDT

Evaluate a single solution

Specified by:

evaluate in class ZDT

Parameters:

solution - Solution to evaluate.

computeParetoOptimalFront

public Solutions<Variable<Double>> computeParetoOptimalFront(int n)

Compute the Pareto optimal front

Parameters:

n - Number of points

Returns:

Pareto optimal front

clone

public ZDT2 clone()

Specified by:

clone in class Problem<Variable<Double>>