org.evosuite.ga.localsearch

Interface LocalSearchObjective<T extends Chromosome>

All Known Implementing Classes:

DefaultLocalSearchObjective, TestSuiteLocalSearchObjective

public interface LocalSearchObjective<T extends Chromosome>

Represents a local search objective that will be used during local search to assess the success (or failure) of a local search to a given chromosome (it could be TestSuiteChromosome or TestChromosome). The local search objective contains a list of fitness functions that are used to compute the fitness of an individual.

Author:

Gordon Fraser

Method Summary

Modifier and Type	Method and Description
void	addFitnessFunction(FitnessFunction<? extends Chromosome> fitness)
List<FitnessFunction<? extends Chromosome>>	getFitnessFunctions() Returns a list with all the fitness functions stored in this local search objective
int	hasChanged(T chromosome) Returns true if the individual has changed since local search started
boolean	hasImproved(T chromosome) Returns true if the individual has improved due to the applied local search
boolean	hasNotWorsened(T chromosome) Returns true if the individual has not worsened due to the applied local search
boolean	isDone() true if the objective was achieved
boolean	isMaximizationObjective() Returns true if all the fitness functions are maximising functions (Observe that it is not possible to store simoustaneously maximising and minimising fitness functions)

Method Detail

isDone

boolean isDone()

true if the objective was achieved

Returns:

isMaximizationObjective

boolean isMaximizationObjective()

Returns true if all the fitness functions are maximising functions (Observe that it is not possible to store simoustaneously maximising and minimising fitness functions)

Returns:

hasImproved

boolean hasImproved(T chromosome)

Returns true if the individual has improved due to the applied local search

Parameters:

chromosome - a Chromosome object.

Returns:

a boolean.

hasNotWorsened

boolean hasNotWorsened(T chromosome)

Returns true if the individual has not worsened due to the applied local search

Parameters:

chromosome - a Chromosome object.

Returns:

a boolean.

hasChanged

int hasChanged(T chromosome)

Returns true if the individual has changed since local search started

Parameters:

chromosome - a Chromosome object.

Returns:

a int.

addFitnessFunction

void addFitnessFunction(FitnessFunction<? extends Chromosome> fitness)

getFitnessFunctions

List<FitnessFunction<? extends Chromosome>> getFitnessFunctions()

Returns a list with all the fitness functions stored in this local search objective

Returns:

a FitnessFunction object.