/// <summary>Initializes a new instance of the <see cref="OneDimSAOptimizer"/> class. /// </summary> /// <param name="randomNumberStream">The random number stream.</param> /// <param name="configuration">The configuration of the Simulated Annealing optimizer.</param> /// <param name="abortCondition">The abort (stopping) condition for the Simulated Annealing optimizer.</param> public OneDimSAOptimizer(IRandomNumberStream randomNumberStream, OneDimSAOptimizerConfiguration configuration, OneDimSAOptimizerAbortCondition abortCondition) { AbortCondition = abortCondition ?? throw new ArgumentNullException(nameof(abortCondition)); Configuration = configuration ?? throw new ArgumentNullException(nameof(configuration)); if (randomNumberStream == null) { throw new ArgumentNullException(nameof(randomNumberStream)); } m_SingleRandomNumberStream = new SingleRandomNumberStream(randomNumberStream, 250); m_Name = new IdentifierString(String.Format("1-dim Simulated Annealing; {0}", abortCondition.ToString())); m_ObjectiveFunctionFactory = new OneDimOptimizerFunctionFactory(); m_ConstraintDescriptor = new OneDimOptimizerConstraintFactory(OneDimOptimizerConstraintFactory.ConstraintType.BoundedInterval); }
/// <summary>Initializes a new instance of the <see cref="PraxisOptimizer"/> class. /// </summary> /// <param name="randomNumberStream">The random number stream.</param> /// <param name="abortCondition">The abort (stopping) condition for the Simulated Annealing optimizer.</param> /// <param name="constraintProvider">The constraint provider, i.e. transformation etc. for the support of specific constraints (the original algorithm does not support any constraints).</param> /// <param name="scalingFactor">A scaling parameter. If the scales for the different parameters are very different this value should be/ set to a value of about 10.0.</param> /// <param name="expectedDistanceToSolution">A step length parameter which should be set equal to the expected distance from the solution.</param> public PraxisOptimizer(IRandomNumberStream randomNumberStream, PraxisOptimizerAbortCondition abortCondition, MultiDimOptimizerConstraintProvider constraintProvider, double scalingFactor = 1.0, double expectedDistanceToSolution = 1.0) { if (randomNumberStream == null) { throw new ArgumentNullException(nameof(randomNumberStream)); } m_SingleRandomNumberStream = new SingleRandomNumberStream(randomNumberStream, 250); AbortCondition = abortCondition ?? throw new ArgumentNullException(nameof(abortCondition)); m_ConstraintProvider = constraintProvider ?? throw new ArgumentNullException(nameof(constraintProvider)); ScalingFactor = scalingFactor; ExpectedDistanceToSolution = expectedDistanceToSolution; m_Name = new IdentifierString("PRAXIS optimizer"); m_FunctionDescriptor = new OrdinaryMultiDimOptimizerFunctionFactory(); m_ConstraintDescriptor = new MultiDimOptimizerConstraintFactory(constraintProvider.SupportedConstraints); }