org.evolvica.core.mutate.Double
Class StepMutator

java.lang.Object
  org.evolvica.engine.AbstractOperator
      org.evolvica.core.common.AbstractGeneticOperator
          org.evolvica.core.mutate.AbstractMutator
              org.evolvica.core.mutate.Double.DoubleMutator
                  org.evolvica.core.mutate.Double.StepMutator

All Implemented Interfaces:

IGeneticOperator, IOperator, IProcessor, java.io.Serializable

public class StepMutator

extends DoubleMutator

Mutation of an double number with a maximal stepsize. This operator will add a random double number within the range from 0 to a given double number. The given number can be either positive or negative.
The mutated value = value + random( 0, stepSize )

Since:

0.4.0

Version:

$Revision: 1.7 $ $Date: 2004/05/26 11:58:07 $

Author:

Andreas Rummler

See Also:

Serialized Form

Field Summary

protected double

stepSize .

Fields inherited from class org.evolvica.core.mutate.AbstractMutator

propability

Fields inherited from class org.evolvica.engine.AbstractOperator

descriptor, element, id, name

Constructor Summary

StepMutator()
Constructor.

StepMutator(double stepSize)
Constructor with mutation step size.

Method Summary

double	getStepSize() Returns the step size.
double	mutate(double value) Mutates a double value.
void	setStepSize(double i) Sets a new value for the step size.

Methods inherited from class org.evolvica.core.mutate.Double.DoubleMutator

mutate

Methods inherited from class org.evolvica.core.mutate.AbstractMutator

getPropability, process, setPropability

Methods inherited from class org.evolvica.engine.AbstractOperator

attachDescriptor, attachElement, descriptor, element, getId, getName, setId, setName

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.evolvica.engine.IOperator

attachDescriptor, attachElement, descriptor, element, getId, getName, setId, setName

Field Detail

stepSize

protected double stepSize

. Mutation step size.

Constructor Detail

StepMutator

public StepMutator()

Constructor. The mutation step size is set to 10.

StepMutator

public StepMutator(double stepSize)

Constructor with mutation step size.

Parameters:

stepSize - mutation step size

Method Detail

mutate

public double mutate(double value)

Description copied from class: DoubleMutator

Mutates a double value.

Specified by:

mutate in class DoubleMutator

Parameters:

value - the value to be mutated

Returns:

the mutated value

See Also:

DoubleMutator.mutate(double)

getStepSize

public double getStepSize()

Returns the step size.

Returns:

step size

setStepSize

public void setStepSize(double i)

Sets a new value for the step size.

Parameters:

i - new value for the step size