@staticmethod
def get_f1(curr_result):
    """
        Simple getter for F1 statistics (N_F1, J_F1 and distance).
        :param curr_result: a result storer
        :type curr_result: ResultStorer

        :return: (J_F1, N_F1, distance)
        :rtype (float, float, int)
        """
    return curr_result.j_f1[0], curr_result.n_f1[0], -curr_result.distance[0
        ], curr_result.ccode[0] not in ('x', 'X')
