Package org.opt4j.core

Class Objective

java.lang.Object

org.opt4j.core.Criterion

org.opt4j.core.Objective

All Implemented Interfaces:

Comparable<Objective>

public class Objective
extends Criterion
implements Comparable<Objective>

The Objective is the identifier for a single objective in the Objectives. It is specified by the following properties:

• Name
• Minimization or Maximization
• Rank (use for ordering)

Each Evaluator sets a specific amount of Objective- Value pairs.

Use the ObjectivesMonitor to get all Objectives of the optimization task.

See Also:

• Objectives
• ObjectivesMonitor

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	Objective.Sign	The sign of the objective.

Field Summary

Fields

Modifier and Type	Field	Description
static final Value<?>	INFEASIBLE	Identifier for infeasible results (null).
protected final int	rank
static final int	RANK_ERROR	High priority rank (-100).
static final int	RANK_OBJECTIVE	Standard rank of an objective (0).
protected final Objective.Sign	sign

Fields inherited from class org.opt4j.core.Criterion

name

Constructor Summary

Constructors

Constructor	Description
Objective(String name)	Constructs an Objective with a given name, sign=MIN, and rank=RANK_OBJECTIVE(0).
Objective(String name, Objective.Sign sign)	Constructs an Objective with a given name, sign, and rank=RANK_OBJECTIVE(0).
Objective(String name, Objective.Sign sign, int rank)	Constructs an Objective with a given name, sign, and rank.

Method Summary

Modifier and Type	Method	Description
int	compareTo(Objective other)
int	getRank()	Returns the rank.
Objective.Sign	getSign()	Returns the sign.
String	toString()

Methods inherited from class org.opt4j.core.Criterion

getName

Methods inherited from class java.lang.Object

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

Field Details

RANK_OBJECTIVE

public static final int RANK_OBJECTIVE

Standard rank of an objective (0).

See Also:

• Constant Field Values

RANK_ERROR

public static final int RANK_ERROR

High priority rank (-100).

See Also:

• Constant Field Values

INFEASIBLE

public static final Value<?> INFEASIBLE

Identifier for infeasible results (null).

sign

protected final Objective.Sign sign

rank

protected final int rank

Constructor Details

Objective

public Objective(String name)

Constructs an Objective with a given name, sign=MIN, and rank=RANK_OBJECTIVE(0).

Parameters:

name - the name

Objective

public Objective(String name,
 Objective.Sign sign)

Constructs an Objective with a given name, sign, and rank=RANK_OBJECTIVE(0).

Parameters:

name - the name

sign - the sign of the objective

Objective

public Objective(String name,
 Objective.Sign sign,
 int rank)

Constructs an Objective with a given name, sign, and rank.

Parameters:

name - the name

sign - the sign of the objective

rank - the rank

Method Details

getSign

public Objective.Sign getSign()

Returns the sign.

Returns:

the sign

getRank

public int getRank()

Returns the rank.

Returns:

the rank

compareTo

public int compareTo(Objective other)

Specified by:

compareTo in interface Comparable<Objective>

toString

public String toString()

Overrides:

toString in class Object