evSOLve.JEvolution.gp.nodes

Class ConstDouble

java.lang.Object

evSOLve.JEvolution.gp.ProgramNode

evSOLve.JEvolution.gp.nodes.ConstDouble

All Implemented Interfaces:

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

public class ConstDouble
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
ConstDouble(double low, double high) Constructs the constant within boundaries.
ConstDouble(Element n) Creates the constant via XML.

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Object	eval() Returns the constant value.
int	getResultType() Returns the result type Double.
java.lang.String	getSignature() Returns the string signature of the node.
void	mutate() Mutates value by a small percentage value drawn from uniform distribution.
void	randomize() Assigns a random constant value within boundaries.
java.lang.String	toString() Returns the string representation of the node.
Element	toXml(Element parent) Saves the constant 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

ConstDouble

public ConstDouble(double low,
           double high)

Constructs the constant within boundaries.

Parameters:

low - the lower bound

high - the upper bound

ConstDouble

public ConstDouble(Element n)

Creates the constant 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 constant value.

Specified by:

eval in class ProgramNode

Returns:

the value as Double

randomize

public void randomize()

Assigns a random constant value within boundaries.

Overrides:

randomize in class ProgramNode

mutate

public void mutate()

Mutates value by a small percentage value drawn from uniform distribution.

Overrides:

mutate in class ProgramNode

toXml

public Element toXml(Element parent)

Saves the constant 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