private IAlgorithm CreateOSGP() {
// configure strict osgp
var alg = new OffspringSelectionGeneticAlgorithm.OffspringSelectionGeneticAlgorithm();
var prob = new SymbolicRegressionSingleObjectiveProblem();
prob.MaximumSymbolicExpressionTreeDepth.Value = 7;
prob.MaximumSymbolicExpressionTreeLength.Value = 15;
alg.Problem = prob;
alg.SuccessRatio.Value = 1.0;
alg.ComparisonFactorLowerBound.Value = 1.0;
alg.ComparisonFactorUpperBound.Value = 1.0;
alg.MutationProbability.Value = 0.15;
alg.PopulationSize.Value = 200;
alg.MaximumSelectionPressure.Value = 100;
alg.MaximumEvaluatedSolutions.Value = 20000;
alg.SelectorParameter.Value = alg.SelectorParameter.ValidValues.OfType<GenderSpecificSelector>().First();
alg.MutatorParameter.Value = alg.MutatorParameter.ValidValues.OfType<MultiSymbolicExpressionTreeManipulator>().First();
alg.StoreAlgorithmInEachRun = false;
return alg;
}