MOEA Framework 2.12
API Specification

org.moeaframework.core.operator.permutation
Class Swap

java.lang.Object
  extended by org.moeaframework.core.operator.permutation.Swap
All Implemented Interfaces:
Variation

public class Swap
extends Object
implements Variation

Swap mutation operator. Randomly selects two entries in the permutation and swaps their position.

This operator is type-safe.


Constructor Summary
Swap(double probability)
          Constructs a swap mutation operator with the specified probability of mutating a variable.
 
Method Summary
static void evolve(Permutation permutation)
          Evolves the specified permutation using the swap mutation operator.
 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.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Swap

public Swap(double probability)
Constructs a swap mutation operator with the specified probability of mutating a variable.

Parameters:
probability - the probability of mutating a variable
Method Detail

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(Permutation permutation)
Evolves the specified permutation using the swap mutation operator.

Parameters:
permutation - the permutation 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

MOEA Framework 2.12
API Specification

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Licensed under the GNU Lesser General Public License.
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