public static void Run() { Console.WriteLine("EpsSVRDemo"); var rnd = new Random(); var trainData = DemoHelper.Range(-10.0, 10.01, 0.1).Select(val => new { X = val, Y = DemoHelper.Sinc(val) + (rnd.NextDouble() - 0.5) / 4 }); var parameters = new SvmParameter { SvmType = SvmType.EPSILON_SVR, KernelType = KernelType.Rbf, Gamma = 0.5, CacheSize = 128, C = 1, Eps = 1e-3, P = 0.1, Shrinking = true, Probability = false }; var problem = new SvmProblem { Y = trainData.Select(p => p.Y).ToArray(), X = trainData.Select(p => p.X.ToSvmNodes()).ToArray() }; parameters.Check(problem); var model = Svm.Train(problem, parameters); foreach (var item in DemoHelper.Range(-1.0, 1.01, 0.1)) { var x = item.ToSvmNodes(); var yPred = model.Predict(x); var yReal = DemoHelper.Sinc(item); Console.WriteLine("x: {0}", item); Console.WriteLine("y_real: {0}", yReal); Console.WriteLine("y_pred: {0}", yPred); Console.WriteLine(); } }
public static void Run() { Console.WriteLine("OneClassDemo"); var trainData = DemoHelper.GenerateClass(0, 0.5, 0.5, 100); var parameters = new SvmParameter { SvmType = SvmType.ONE_CLASS, KernelType = KernelType.Rbf, Gamma = 0.5, Nu = 0.5, CacheSize = 128, Eps = 1e-3, Shrinking = true, Probability = false }; var problem = new SvmProblem { Y = trainData.Select(p => 1.0).ToArray(), X = trainData.Select(p => p.ToSvmNodes()).ToArray() }; parameters.Check(problem); var model = Svm.Train(problem, parameters); var x = new Point(0.9, 0.9).ToSvmNodes(); var resx = model.Predict(x); Console.WriteLine(resx); var y = new Point(0.5, 0.5).ToSvmNodes(); var resy = model.Predict(y); Console.WriteLine(resy); var z = new Point(0.45, 0.45).ToSvmNodes(); var resz = model.Predict(z); Console.WriteLine(resz); }
public static void Run() { Console.WriteLine("CSVMDemo"); var class1 = DemoHelper.GenerateClass(0, 0.1, 0.1, 50); var class2 = DemoHelper.GenerateClass(1, 0.8, 0.8, 50); var trainData = class1.Concat(class2); var parameters = new SvmParameter { SvmType = SvmType.C_SVC, KernelType = KernelType.Rbf, Gamma = 0.5, CacheSize = 128, C = 1, Eps = 1e-3, Shrinking = true, Probability = false }; var problem = new SvmProblem { Y = trainData.Select(p => (double)p.Label).ToArray(), X = trainData.Select(p => p.ToSvmNodes()).ToArray() }; parameters.Check(problem); var model = Svm.Train(problem, parameters); var x = new Point(0.9, 0.9).ToSvmNodes(); var resx = model.Predict(x); Console.WriteLine(resx); var y = new Point(0.1, 0.1).ToSvmNodes(); var resy = model.Predict(y); Console.WriteLine(resy); }