void ReadDataFromCsv(std::string &filename, std::vector<std::vector<std::string> > &lines_feat) {

    std::ifstream vm_info(filename.c_str());

    std::string lines, var;

    std::vector<std::string> row;

    lines_feat.clear();

    while(!vm_info.eof()) {

        getline(vm_info, lines);

        if(lines.empty())

            break;

        std::istringstream stringin(lines);

        row.clear();

        while(std::getline(stringin, var, ',')) {

            row.push_back(var);

        }

        lines_feat.push_back(row);

    }

}