org.moeaframework.core.operator.binary
Class BitFlip

java.lang.Object
  org.moeaframework.core.operator.binary.BitFlip

All Implemented Interfaces:

Variation

public class BitFlip
extends Object
implements Variation

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

BitFlip(double probability)
Constructs a bit flip operator.

Method Summary

static void	evolve(BinaryVariable variable, double probability) Mutates the specified variable using bit flip mutation.
Solution[]	evolve(Solution[] parents) Evolves one or more parent solutions (specified by getArity) and produces one or more child solutions.
int	getArity() Returns the number of solutions that must be supplied to the evolve method.
double	getProbability() Returns the probability of flipping a bit.

Methods inherited from class java.lang.Object

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

Constructor Detail

BitFlip

public BitFlip(double probability)

Constructs a bit flip operator.

Parameters:

probability - the probability of flipping a bit

Method Detail

getProbability

public double getProbability()

Returns the probability of flipping a bit.

Returns:

the probability of flipping a bit

evolve

public Solution[] evolve(Solution[] parents)

Description copied from interface: Variation

Evolves one or more parent solutions (specified by getArity) and produces one or more child solutions. By contract, the parents must not be modified. The copy constructor should be used to create copies of the parents with these copies subsequently modified.

Specified by:

evolve in interface Variation

Parameters:

parents - the array of parent solutions

Returns:

an array of child solutions

evolve

public static void evolve(BinaryVariable variable,
                          double probability)

Mutates the specified variable using bit flip mutation.

Parameters:

variable - the variable to be mutated

getArity

public int getArity()

Description copied from interface: Variation

Returns the number of solutions that must be supplied to the evolve method.

Specified by:

getArity in interface Variation

Returns:

the number of solutions that must be supplied to the evolve method