org.jgap.impl
Class DefaultMutationRateCalculator

java.lang.Object
  org.jgap.BaseRateCalculator
      org.jgap.impl.DefaultMutationRateCalculator

All Implemented Interfaces:

java.io.Serializable, IUniversalRateCalculator

public class DefaultMutationRateCalculator
extends BaseRateCalculator

Default implementation of a mutation rate calculcator.

Since:

1.1

See Also:

Serialized Form

Constructor Summary

DefaultMutationRateCalculator(Configuration a_config)

Method Summary

int	calculateCurrentRate() Calculates the mutation rate.
boolean	toBePermutated(IChromosome a_chrom, int a_geneIndex) Determines whether mutation is to be carried out.

Methods inherited from class org.jgap.BaseRateCalculator

getConfiguration

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultMutationRateCalculator

public DefaultMutationRateCalculator(Configuration a_config)
                              throws InvalidConfigurationException

Parameters:

a_config - the configuration to use

Throws:

InvalidConfigurationException

Since:

3.0

Method Detail

calculateCurrentRate

public int calculateCurrentRate()

Calculates the mutation rate.

Returns:

calculated divisor of mutation rate probability (dividend is 1)

Since:

1.1 (same functionality as earlier, but not encapsulated)

toBePermutated

public boolean toBePermutated(IChromosome a_chrom,
                              int a_geneIndex)

Determines whether mutation is to be carried out. In this case the rate is the size of the chromosome. There is therefore a probability of 1/totalgenes that a particular gene mutates.

Parameters:

a_chrom - ignored

a_geneIndex - ignored

Returns:

true if gene should be mutated

Since:

2.0