Differential Evolution Optimizer Constructor
Definition
Namespace: Numerics.NET.Optimization
Assembly: Numerics.NET (in Numerics.NET.dll) Version: 9.1.0
Assembly: Numerics.NET (in Numerics.NET.dll) Version: 9.1.0
Overload List
Differential | Constructs a new DifferentialEvolutionOptimizer object. |
Differential | Constructs a new Differential Evolution optimizer with specified parameters. |
DifferentialEvolutionOptimizer
Constructs a new DifferentialEvolutionOptimizer object.
public DifferentialEvolutionOptimizer()
DifferentialEvolutionOptimizer(Func<Vector<Double>, Double>, Vector<Double>, Vector<Double>, Int32, Double, Double, DifferentialEvolutionStrategy, PopulationInitializationMethod, DifferentialWeightDithering, Random, Double, Double, Int32, Int32)
Constructs a new Differential Evolution optimizer with specified parameters.
public DifferentialEvolutionOptimizer(
Func<Vector<double>, double> objectiveFunction,
Vector<double> lowerBounds,
Vector<double> upperBounds,
int populationMultiplier = 15,
double differentialWeight = 0.8,
double crossoverRate = 0.9,
DifferentialEvolutionStrategy strategy = DifferentialEvolutionStrategy.Best1Bin,
PopulationInitializationMethod initializationType = PopulationInitializationMethod.Random,
DifferentialWeightDithering weightDithering = DifferentialWeightDithering.None,
Random? random = null,
double ditheringRange = 0.1,
double populationDiversityTolerance = 0.0001,
int stagnationLimit = 20,
int maxIterations = 8192
)
Parameters
- objectiveFunction Func<Vector<Double>, Double>
- The objective function to optimize.
- lowerBounds Vector<Double>
- The lower bounds for each parameter.
- upperBounds Vector<Double>
- The upper bounds for each parameter.
- populationMultiplier Int32 (Optional)
- Optional. A multiplier for the population size. The total population is the number of free parameters times this value. The default is 15.
- differentialWeight Double (Optional)
- Optional. The differential weight (F) used in mutation. The default is 0.8.
- crossoverRate Double (Optional)
- Optional. The crossover probability (CR). The default is 0.9.
- strategy DifferentialEvolutionStrategy (Optional)
- Optional. The mutation strategy to use. The default is Best1Bin.
- initializationType PopulationInitializationMethod (Optional)
- Optional. The method used to initialize population. The default is Random.
- weightDithering DifferentialWeightDithering (Optional)
- Optional. The type of dithering to apply to differential weight. The default is None.
- random Random (Optional)
- Optional. A random number generator to use. The default is DefaultRandomNumberGenerator.
- ditheringRange Double (Optional)
- Optional. The range for uniform dithering when enabled. The default is 0.1.
- populationDiversityTolerance Double (Optional)
- Optional. Tolerance for population diversity test. The default is 1e-4.
- stagnationLimit Int32 (Optional)
- Optional. Number of iterations without improvement before declaring stagnation. The default is 20.
- maxIterations Int32 (Optional)
- Optional. Maximum number of iterations. The default is int.MaxValue.