public static OffspringSelectionGeneticAlgorithm CreateGpTimeSeriesSample() { var problem = new SymbolicTimeSeriesPrognosisSingleObjectiveProblem(); problem.Name = "Symbolic time series prognosis problem (Mackey Glass t=17)"; problem.ProblemData.Name = "Mackey Glass t=17"; problem.MaximumSymbolicExpressionTreeLength.Value = 125; problem.MaximumSymbolicExpressionTreeDepth.Value = 12; problem.EvaluatorParameter.Value.HorizonParameter.Value.Value = 10; foreach (var symbol in problem.SymbolicExpressionTreeGrammar.Symbols) { if (symbol is Exponential || symbol is Logarithm) { symbol.Enabled = false; } else if (symbol is AutoregressiveTargetVariable) { symbol.Enabled = true; var autoRegressiveSymbol = symbol as AutoregressiveTargetVariable; autoRegressiveSymbol.MinLag = -30; autoRegressiveSymbol.MaxLag = -1; } } var osga = new OffspringSelectionGeneticAlgorithm(); osga.Name = "Genetic Programming - Time Series Prediction (Mackey-Glass-17)"; osga.Description = "A genetic programming algorithm for creating a time-series model for the Mackey-Glass-17 time series."; osga.Problem = problem; SamplesUtils.ConfigureOsGeneticAlgorithmParameters <GenderSpecificSelector, SubtreeCrossover, MultiSymbolicExpressionTreeManipulator> (osga, popSize: 100, elites: 1, maxGens: 25, mutationRate: 0.15); osga.MaximumSelectionPressure.Value = 100; return(osga); }
public static OffspringSelectionGeneticAlgorithm CreateGpTimeSeriesSample() { var problem = new SymbolicTimeSeriesPrognosisSingleObjectiveProblem(); problem.Name = "Symbolic time series prognosis problem (Mackey Glass t=17)"; problem.ProblemData.Name = "Mackey Glass t=17"; problem.MaximumSymbolicExpressionTreeLength.Value = 125; problem.MaximumSymbolicExpressionTreeDepth.Value = 12; problem.EvaluatorParameter.Value.HorizonParameter.Value.Value = 10; foreach (var symbol in problem.SymbolicExpressionTreeGrammar.Symbols) { if (symbol is Exponential || symbol is Logarithm) { symbol.Enabled = false; } else if (symbol is AutoregressiveTargetVariable) { symbol.Enabled = true; var autoRegressiveSymbol = symbol as AutoregressiveTargetVariable; autoRegressiveSymbol.MinLag = -30; autoRegressiveSymbol.MaxLag = -1; } } var osga = new OffspringSelectionGeneticAlgorithm(); osga.Name = "Genetic Programming - Time Series Prediction (Mackey-Glass-17)"; osga.Description = "A genetic programming algorithm for creating a time-series model for the Mackey-Glass-17 time series."; osga.Problem = problem; SamplesUtils.ConfigureOsGeneticAlgorithmParameters<GenderSpecificSelector, SubtreeCrossover, MultiSymbolicExpressionTreeManipulator> (osga, popSize: 100, elites: 1, maxGens: 25, mutationRate: 0.15); osga.MaximumSelectionPressure.Value = 100; return osga; }