Index of MATH/GENETIC

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Index of MATH/GENETIC

This directory contains the ROOT::Math::GeneticMinimizer class

The GeneticMinimizer class is used to implement a genetic minimizer algorithm. The algorithm is based on an algorithm implemented in the TMVA package (TMVA::GeneticAlgorithm class).

The ROOT::Math:GeneticMinimizer class implements the ROOT::Math::Minimizer interface, as a new plugin with name "Genetic". The class can be used when fitting histograms or graph by selecting it as default minimizer. This can be done via:

ROOT::Math::MinimizerOptions::SetDefaultMinimizer("Genetic");

Via the MinimizerOptions, one can control the possible options for the class. These are described in the TMVA user guide, Option Table 7. A list of the default options can be obtained by doing:

ROOT::Math::Minimizer * min =ROOT::Math::Factory::CreateMinimizer("Genetic"); 
min->Options().Print();

The user can change a default option, like the population size to 500 and the steps to 60 by doing:

ROOT::Math::MinimizerOptions::Default("Genetic").SetValue("PopSize",500);
ROOT::Math::MinimizerOptions::Default("Genetic").SetValue("Steps",60);