C++感知机学习算法

机器学习-感知机C++代码

#include<iostream> #include<fstream> #include<vector> #include<sstream> using namespace std; int lr = 1; void data_read(istream& in,vector<vector<int>> &datas) { string line; while (getline(in,line)) { istringstream sline(line); vector<int> data; int x; while (sline >> x) { data.push_back(x); } datas.push_back(data); } } bool check(int* w,int &b,vector<vector<int>> datas) { int j(datas.size()); int i(0); while (i<j) { vector<int> data(datas[i]); if ((-data[2] * (w[0] * data[0] + w[1] * data[1]+b)) >=0) { b = b + data[2]; w[0] = w[0] + data[2]*data[0]; w[1] = w[1] + data[2]*data[1]; return false; } i++; } return true; } int main() { ifstream fs("./data.txt"); vector<vector<int>> samples; data_read(fs, samples); int w[2] = {0,0}; int b = 0; while(!check(w, b, samples)); cout << w[0] << " " << w[1] << " " << b << endl; return 1; }