def serialized(self):
        to_ret = {}
        for group, requirements in self.items():
            to_ret[group] = [str(requirement) for requirement in requirements]
        return to_ret
def get_probabilities(self):
        """!
        @brief Returns 2-dimensional list with belong probability of each object from data to cluster correspondingly,
                where that first index is for cluster and the second is for point.