Package net.bmahe.genetics4j.core.evolutionlisteners

Class SimpleEvolutionListener<T extends Number>

java.lang.Object

net.bmahe.genetics4j.core.evolutionlisteners.SimpleEvolutionListener<T>

All Implemented Interfaces:

EvolutionListener<T>

public class SimpleEvolutionListener<T extends Number>
extends Object
implements EvolutionListener<T>

Field Summary

Fields

Modifier and Type	Field	Description
static final org.apache.logging.log4j.Logger	logger

Constructor Summary

Constructors

Constructor	Description
SimpleEvolutionListener()

Method Summary

Modifier and Type	Method	Description
void	onEvolution(long generation, List<Genotype> population, List<T> fitness, boolean isDone)	Called after each generation to notify about evolution progress.

Methods inherited from class java.lang.Object

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

Field Details

logger

public static final org.apache.logging.log4j.Logger logger

Constructor Details

SimpleEvolutionListener

public SimpleEvolutionListener()

Method Details

onEvolution

public void onEvolution(long generation,
 List<Genotype> population,
 List<T> fitness,
 boolean isDone)

Description copied from interface: EvolutionListener

Called after each generation to notify about evolution progress.

This method is invoked by the evolutionary algorithm after each generation has been completed, providing access to the current population state and fitness values. The implementation can use this information for monitoring, logging, or adaptive control.

The method is called with:

• Current generation number (starting from 0)
• Complete population of genotypes for this generation
• Corresponding fitness values for each individual
• Flag indicating whether evolution has completed

Important notes:

• Population and fitness lists are guaranteed to have the same size
• Fitness values correspond to genotypes at the same index
• Data may be shared with the evolution algorithm; avoid modification
• Method should execute quickly to avoid impacting evolution performance

Specified by:

onEvolution in interface EvolutionListener<T extends Number>

Parameters:

generation - the current generation number (0-based)

population - the list of genotypes in the current generation

fitness - the list of fitness values corresponding to each genotype

isDone - true if the evolution has completed, false otherwise