perceptron.cc

#include <iostream>


static int w[] = {20,20,20};
static int x0 = 1;
const int kwAdd = 5;

bool twoPercep(int x1, int x2)
{
   int x[3] = {0,};
   x[0] = x0;
   x[1] = x1;
   x[2] = x2;
   int sum = 0;

   for(int i =0; i < 3; ++i) {
        sum += w[i] * x[i];
   }

   if(sum < 0)
       return false;
   else
       return true;
}


int main() {
    int test[4][3] = {
        {0, 0, 0},
        {0, 1, 0},
        {1, 0, 0},
        {1, 1, 1}
    };
    bool result[4] = {0, 0, 0, 0};

    auto checkIt = [&]() {
        for(int i = 0; i < 4; ++i){
            if(!result[i])
                return false;
        }
        return true;
    };

    while(true){
        for(int i = 0; i < 4; ++i) {
            if(test[i][2] == twoPercep(test[i][0], test[i][1]))
                result[i] = true;
            else
                result[i] = false;
        }

        if(checkIt())
            break;

        for(int i = 0; i < 4; ++i) {
            if(!result[i]){
               w[0] -= kwAdd;
               w[1] -= kwAdd * test[i][0];
               w[2] -= kwAdd * test[i][1];
            }
            else {
               w[0] += 1;
               w[1] += test[i][0];
               w[2] += test[i][1];
            }
        }

    for(int i = 0; i < 3; ++i)
        std::cout << "w" << i << " : " << w[i] << std::endl;
    std::cout << "--------------------------" << std::endl;

    }
    std::cout << "---------result--------------" << std::endl;
    for(int i = 0; i < 3; ++i)
        std::cout << "w" << i << " : " << w[i] << std::endl;

}