Package org.moeaframework.core.operator.binary

Class BitFlip

java.lang.Object

org.moeaframework.core.operator.binary.BitFlip

All Implemented Interfaces:

Configurable, Mutation, Variation

public class BitFlip
extends Object
implements Mutation

Bit flip mutation operator. Each bit is flipped (switched from a 0 to a 1, or vice versa) using the specified probability.

This operator is type-safe.

Constructor Summary

Constructors

Constructor	Description
BitFlip()	Constructs a bit flip operator with the default settings.
BitFlip(double probability)	Constructs a bit flip operator.

Method Summary

Modifier and Type	Method	Description
String	getName()	Returns the name of this variation operator.
double	getProbability()	Returns the probability of flipping a bit.
Solution	mutate(Solution parent)	Mutates the given parent to produce an offspring.
static void	mutate(BinaryVariable variable, double probability)	Mutates the specified variable using bit flip mutation.
void	setProbability(double probability)	Sets the probability of flipping a bit.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.moeaframework.core.configuration.Configurable

applyConfiguration, getConfiguration

Methods inherited from interface org.moeaframework.core.operator.Mutation

evolve, getArity

Constructor Details

BitFlip

public BitFlip()

Constructs a bit flip operator with the default settings.

BitFlip

public BitFlip(double probability)

Constructs a bit flip operator.

Parameters:

probability - the probability of flipping a bit

Method Details

getName

public String getName()

Description copied from interface: Variation

Returns the name of this variation operator. This name should also be used as the prefix for any parameters. As such, the name should only contain alphanumeric characters, avoid using whitespace and other symbols.

Specified by:

getName in interface Variation

Returns:

the name of this variation operator

getProbability

public double getProbability()

Returns the probability of flipping a bit.

Returns:

the probability of flipping a bit

setProbability

public void setProbability(double probability)

Sets the probability of flipping a bit.

Parameters:

probability - the probability of flipping a bit

mutate

public Solution mutate(Solution parent)

Description copied from interface: Mutation

Mutates the given parent to produce an offspring.

Specified by:

mutate in interface Mutation

Parameters:

parent - the parent solution

Returns:

the offspring

mutate

public static void mutate(BinaryVariable variable,
 double probability)

Mutates the specified variable using bit flip mutation.

Parameters:

variable - the variable to be mutated

probability - the probability of flipping a bit