C# Класс SwarmOps.Problems.Mangler

Search-space mangler, used to increase the difficulty of optimizing benchmark problems and avoid correlation with global optima such as zero. Note that this works with parallel optimizers but not with parallel meta-optimization because of the way MetaFitness is implemented.

Наследование: ProblemWrapper

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Открытые методы

Метод	Описание
BeginOptimizationRun ( ) : void	At beginning of new optimization run create a random mangling.
Fitness ( double parameters, double fitnessLimit, bool oldFeasible, bool newFeasible ) : double	Compute fitness of wrapped problem and print the result.
Gradient ( double x, double &v ) : int	Compute the gradient of the fitness-function. This is not defined for mangled search-spaces.
Mangler ( Problem problem, double diffusion, double displacement, double spillover, double fitnessNoise ) : System	Constructs a new object.

Описание методов

BeginOptimizationRun() публичный Метод

At beginning of new optimization run create a random mangling.

public BeginOptimizationRun ( ) : void
Результат	void

Fitness() публичный Метод

Compute fitness of wrapped problem and print the result.

public Fitness ( double parameters, double fitnessLimit, bool oldFeasible, bool newFeasible ) : double
parameters	double
fitnessLimit	double
oldFeasible	bool
newFeasible	bool
Результат	double

Gradient() публичный Метод

Compute the gradient of the fitness-function. This is not defined for mangled search-spaces.

public Gradient ( double x, double &v ) : int
x	double	Candidate solution.
v	double	Array for holding the gradient.
Результат	int

Mangler() публичный Метод

Constructs a new object.

public Mangler ( Problem problem, double diffusion, double displacement, double spillover, double fitnessNoise ) : System
problem	Problem	The problem being wrapped.
diffusion	double	Diffusion factor, larger than 0, e.g. 0.01
displacement	double	Displacement factor, larger than 0, e.g. 0.1
spillover	double	Spillover factor, larger than 0, e.g. 0.05
fitnessNoise	double	FitnessNoise factor, lager than 0, e.g. 0.01
Результат	System