Package ec.gp

Class GPTreeConstraints

java.lang.Object

ec.gp.GPTreeConstraints

All Implemented Interfaces:

Clique, Setup, Serializable

public class GPTreeConstraints
extends Object
implements Clique

A GPTreeConstraints is a Clique which defines constraint information common to many different GPTree trees, namely the tree type, builder, and function set. GPTreeConstraints have unique names by which they are identified.

In adding new things to GPTreeConstraints, you should ask yourself the following questions: first, is this something that takes up too much memory to store in GPTrees themseves? second, is this something that needs to be accessed very rapidly, so cannot be implemented as a method call in a GPTree? third, can this be shared among different GPTrees?

Parameters

base.size int >= 1	(number of tree constraints)
base.n.name String	(name of tree constraint n)
base.n.init classname, inherits and != ec.gp.GPNodeBuilder	(GP node builder for tree constraint n)
base.n.returns String	(tree type for tree constraint n)
base.n.fset String	(function set for tree constraint n)

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
byte	constraintNumber	The byte value of the constraints -- we can only have 256 of them
GPFunctionSet	functionset	The function set for nodes in the tree
GPNodeBuilder	init	The builder for the tree
String	name
static final String	P_FUNCTIONSET
static final String	P_INIT
static final String	P_NAME
static final String	P_RETURNS
static final String	P_SIZE
static final int	SIZE_OF_BYTE
GPType	treetype	The type of the root of the tree

Constructor Summary

Constructors

Constructor	Description
GPTreeConstraints()

Method Summary

Modifier and Type	Method	Description
static GPTreeConstraints	constraintsFor(String constraintsName, EvolutionState state)	You must guarantee that after calling constraintsFor(...) one or several times, you call state.output.exitIfErrors() once.
void	setup(EvolutionState state, Parameter base)	This must be called after the GPTypes and GPFunctionSets have been set up.
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

SIZE_OF_BYTE

public static final int SIZE_OF_BYTE

See Also:

• Constant Field Values

P_NAME

public static final String P_NAME

See Also:

• Constant Field Values

P_SIZE

public static final String P_SIZE

See Also:

• Constant Field Values

P_INIT

public static final String P_INIT

See Also:

• Constant Field Values

P_RETURNS

public static final String P_RETURNS

See Also:

• Constant Field Values

P_FUNCTIONSET

public static final String P_FUNCTIONSET

See Also:

• Constant Field Values

name

public String name

constraintNumber

public byte constraintNumber

The byte value of the constraints -- we can only have 256 of them

init

public GPNodeBuilder init

The builder for the tree

treetype

public GPType treetype

The type of the root of the tree

functionset

public GPFunctionSet functionset

The function set for nodes in the tree

Constructor Details

GPTreeConstraints

public GPTreeConstraints()

Method Details

toString

public String toString()

Overrides:

toString in class Object

setup

public void setup(EvolutionState state,
 Parameter base)

This must be called after the GPTypes and GPFunctionSets have been set up.

Specified by:

setup in interface Setup

constraintsFor

public static GPTreeConstraints constraintsFor(String constraintsName,
 EvolutionState state)

You must guarantee that after calling constraintsFor(...) one or several times, you call state.output.exitIfErrors() once.