perception.cpp

/* compile with  g++ ip.c++ -lboost_system */

#include <boost/numeric/ublas/vector.hpp>
#include <boost/numeric/ublas/io.hpp>

using namespace boost::numeric::ublas;

class Perceptron {
  public:

  Perceptron(vector<double> weights, double bias) : weights(weights), bias(bias) {};

  double think(vector<double> & v);

  private:

  vector<double> weights;
  double bias;
};


double
Perceptron::think(vector<double> & input) {
    return inner_prod(weights, input) + bias;
}


int
main(int argc, char ** argv) {

    vector<double> v (3);
    for (unsigned i = 0; i < v.size (); ++ i) {
        v (i) = i;
    }
    
    vector<double> u (3);
    for (unsigned i = 0; i < u.size (); ++ i) {
        u (i) = i;
    }

    Perceptron * p = new Perceptron(v, 1.0);
    std::cout << p->think(u) << std::endl;
    delete p;

    return 0;
}