evSOLve.JEvolution.gp.nodes

Class VarDouble

java.lang.Object

evSOLve.JEvolution.gp.ProgramNode

evSOLve.JEvolution.gp.nodes.VarDouble

All Implemented Interfaces:

java.lang.Cloneable, javax.swing.tree.MutableTreeNode, javax.swing.tree.TreeNode

public class VarDouble
extends ProgramNode

Field Summary

Fields inherited from class evSOLve.JEvolution.gp.ProgramNode

children, parent, TYPE_BOOLEAN, TYPE_DOUBLE, TYPE_INT, TYPE_UNDEFINED, values

Constructor Summary

Constructors

Constructor and Description
VarDouble() Constructs the variable.
VarDouble(Element n) Creates the variable via XML.

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Object	eval() Returns the value of the variable.
int	getResultType() Returns the result type Double.
java.lang.String	getSignature() Returns the string signature of the node.
void	mutate() Is randomize().
void	randomize() Assigns a random variable index, e.
java.lang.String	toString() Returns the string representation of the node.
Element	toXml(Element parent) Saves the variable to XML.

Methods inherited from class evSOLve.JEvolution.gp.ProgramNode

addValue, children, clearValues, clone, create, equals, getAllowsChildren, getChildAt, getChildCount, getIndex, getLevel, getOperandType, getParent, hashCode, insert, isLeaf, remove, remove, removeFromParent, setParent, setUserObject

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

VarDouble

public VarDouble()

Constructs the variable.

VarDouble

public VarDouble(Element n)

Creates the variable via XML.

Parameters:

n - an XML node element

Method Detail

getResultType

public int getResultType()

Returns the result type Double.

Specified by:

getResultType in class ProgramNode

Returns:

TYPE_DOUBLE

eval

public java.lang.Object eval()

Returns the value of the variable. Node mutation is done here, as it has to be deferred, because the number of variables is only known, when the program tree is evaluated.

Specified by:

eval in class ProgramNode

Returns:

the value as Double

randomize

public void randomize()

Assigns a random variable index, e. g., 'x' becomes 'y'.

Overrides:

randomize in class ProgramNode

mutate

public void mutate()

Is randomize().

Overrides:

mutate in class ProgramNode

toXml

public Element toXml(Element parent)

Saves the variable to XML.

Overrides:

toXml in class ProgramNode

Parameters:

parent - the JDOM parent element

Returns:

the Node element

getSignature

public java.lang.String getSignature()

Returns the string signature of the node.

Specified by:

getSignature in class ProgramNode

Returns:

the node's signature

toString

public java.lang.String toString()

Returns the string representation of the node.

Specified by:

toString in class ProgramNode

Returns:

the node's string representation