cs-gene-expression-programming 1.0.3

Install-Package cs-gene-expression-programming -Version 1.0.3
dotnet add package cs-gene-expression-programming --version 1.0.3
<PackageReference Include="cs-gene-expression-programming" Version="1.0.3" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add cs-gene-expression-programming --version 1.0.3
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: cs-gene-expression-programming, 1.0.3"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. Copy this into the interactive tool or source code of the script to reference the package.
// Install cs-gene-expression-programming as a Cake Addin
#addin nuget:?package=cs-gene-expression-programming&version=1.0.3

// Install cs-gene-expression-programming as a Cake Tool
#tool nuget:?package=cs-gene-expression-programming&version=1.0.3
The NuGet Team does not provide support for this client. Please contact its maintainers for support.


Gene expression programming implemented using C#


The sample code belows show how to use the Gene Expression Programming to solve the spiral classification problem:

class Program
	static DataTable LoadData(string filename)
		DataTable table = new DataTable();

		int line_count = 0;
		using (StreamReader reader = new StreamReader(filename))
			string line = reader.ReadLine();
			int.TryParse(line, out line_count);

			while ((line = reader.ReadLine()) != null)
				string[] elements = line.Split(new char[] { '\t' });

				double x, y;
				int label;
				double.TryParse(elements[0].Trim(), out x);
				double.TryParse(elements[1].Trim(), out y);
				int.TryParse(elements[2].Trim(), out label);

				table.Rows.Add(x, y, label);
		return table;

	static void Main(string[] args)
		DataTable table = LoadData("dataset.txt");

		GEPConfig config = new GEPConfig("GEPConfig.xml");

		GEPPop<GEPSolution> pop = new GEPPop<GEPSolution>(config);

		pop.OperatorSet.AddOperator(new TGPOperator_Plus());
		pop.OperatorSet.AddOperator(new TGPOperator_Minus());
		pop.OperatorSet.AddOperator(new TGPOperator_Division());
		pop.OperatorSet.AddOperator(new TGPOperator_Multiplication());
		pop.OperatorSet.AddOperator(new TGPOperator_Sin());
		pop.OperatorSet.AddOperator(new TGPOperator_Cos());

		for (int i = 1; i < 10; ++i)
			pop.ConstantSet.AddConstant(string.Format("C{0}", i), i);



		pop.CreateFitnessCase += (index) =>
			SpiralFitnessCase fitness_case = new SpiralFitnessCase();
			fitness_case.X = double.Parse(table.Rows[index]["X"].ToString());
			fitness_case.Y = double.Parse(table.Rows[index]["Y"].ToString());
			fitness_case.Label = int.Parse(table.Rows[index]["Label"].ToString());

			return fitness_case;

		pop.GetFitnessCaseCount += () =>
			return table.Rows.Count;

		pop.EvaluateObjectiveForSolution += (fitness_cases, solution, objective_index) =>
			double fitness = 0;
			for (int i = 0; i < fitness_cases.Count; i++)
				SpiralFitnessCase fitness_case = (SpiralFitnessCase)fitness_cases[i];
				int correct_y = fitness_case.Label;
				int computed_y = fitness_case.ComputedLabel;
				fitness += (correct_y == computed_y) ? 0 : 1;

			return fitness;


		while (!pop.IsTerminated)
			Console.WriteLine("Spiral Classification Generation: {0}", pop.CurrentGeneration);
			Console.WriteLine("Global Fitness: {0}\tCurrent Fitness: {1}", pop.GlobalBestProgram.Fitness, pop.FindFittestProgramInCurrentGeneration().Fitness);
			Console.WriteLine("Global Best Solution:\n{0}", pop.GlobalBestProgram);
			//Console.WriteLine("Current Best Solution:\n{0}", pop.FindFittestProgramInCurrentGeneration());


The GEPConfig.xml and its child configuration files will be automatically generated if they do not exist, otherwise the configuration will be loaded from the existing GEPConfig.xml and its child configuration files.

This package has no dependencies.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
1.0.3 693 12/3/2017
1.0.2 532 11/17/2017
1.0.1 543 11/4/2017

Gene Expression Programming in .NET 4.5.2