example_perceptron_kernel_fourier_yinyang.cpp

 
#include <iostream>
#include <Pds/Ra>
#include <Pds/Ml>
 
    
int main(void)
{
    Pds::ClassificationMetrics Metrics;
    Pds::Vector Yp;
    Pds::Matrix F;
    Pds::IterationConf Conf;
    unsigned int K=4;
    
    // Generating data
    unsigned int L=10000;
    Pds::Matrix X;
    Pds::Vector Y;
    Pds::DataSet::Classification::LoadDataYinYang(L,X,Y);
    
    // Create Perceptron
    F=Pds::Kernel::FourierSeries(X,Pds::Vector("2.0 2.0"),K);
 
    Pds::Ra::Tic();
    Conf.SetMaxIter(10000);
    Pds::Perceptron Neurona(Conf,F,Y);
    Pds::Ra::Toc();
 
    Neurona.Print("\nNeurona:\n");
    
    // Evaluate training data
    Yp=Neurona.Evaluate(F);
    
    // Metrics of training
    Metrics = Pds::ClassificationMetrics::Calculate(0.5,Yp,Y);
    Metrics.Print("\n");
        
    // Evaluate testing data
    Pds::DataSet::Classification::LoadDataYinYang(L,X,Y); // Load new data
    F=Pds::Kernel::FourierSeries(X,Pds::Vector("2.0 2.0"),K);
    Yp=Neurona.Evaluate(F);
    
    // Metrics testing
    Metrics = Pds::ClassificationMetrics::Calculate(Metrics.Threshold,Yp,Y);
    Metrics.Print("\n");
    return 0;
}