Package org.moeaframework.problem.LZ

Class LZ

java.lang.Object

org.moeaframework.problem.AbstractProblem

org.moeaframework.problem.LZ.LZ

All Implemented Interfaces:

AutoCloseable, Problem

Direct Known Subclasses:

LZ1, LZ2, LZ3, LZ4, LZ5, LZ6, LZ7, LZ8, LZ9

public abstract class LZ
extends AbstractProblem

Abstract class for implementing problems from the complicated Pareto sets test suite by Hui Li and Qingfu Zhang.

Field Summary

Fields inherited from class org.moeaframework.problem.AbstractProblem

numberOfConstraints, numberOfObjectives, numberOfVariables

Constructor Summary

Constructors

Constructor	Description
LZ(int numberOfVariables, int numberOfObjectives, int pType, int lType, int dType)	Construcs an LZ problem instance with the specified number of variables, number of objectives, ptype code, ltype code, and dtype code.

Method Summary

Modifier and Type	Method	Description
void	evaluate(Solution solution)	Evaluates the solution, updating the solution's objectives in place.
int	getDType()	Returns the dtype code specifying the type of non-negative function.
int	getLType()	Returns the ltype code specifying the type of Pareto set.
int	getPType()	Returns the ptype code specifying the type of Pareto front.
Solution	newSolution()	Returns a new solution for this problem.

Methods inherited from class org.moeaframework.problem.AbstractProblem

close, getName, getNumberOfConstraints, getNumberOfObjectives, getNumberOfVariables

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.moeaframework.core.Problem

isType

Constructor Details

LZ

public LZ(int numberOfVariables,
 int numberOfObjectives,
 int pType,
 int lType,
 int dType)

Construcs an LZ problem instance with the specified number of variables, number of objectives, ptype code, ltype code, and dtype code.

Parameters:

numberOfVariables - the number of variables

numberOfObjectives - the number of objectives

pType - the ptype code specifying the type of Pareto front

lType - the ltype code specifying the type of Pareto set

dType - the dtype code specifying the type of non-negative function

Method Details

getPType

public int getPType()

Returns the ptype code specifying the type of Pareto front.

Returns:

the ptype code specifying the type of Pareto front

getLType

public int getLType()

Returns the ltype code specifying the type of Pareto set.

Returns:

the ltype code specifying the type of Pareto set

getDType

public int getDType()

Returns the dtype code specifying the type of non-negative function.

Returns:

the dtype code specifying the type of non-negative function

evaluate

public void evaluate(Solution solution)

Description copied from interface: Problem

Evaluates the solution, updating the solution's objectives in place. Algorithms must explicitly call this method when appropriate to evaluate new solutions or reevaluate modified solutions.

Parameters:

solution - the solution to be evaluated

newSolution

public Solution newSolution()

Description copied from interface: Problem

Returns a new solution for this problem. Implementations must initialize the variables so that the valid range of values is defined, but typically leave the actual value at a default or undefined state.

Returns:

a new solution for this problem