def yaml(self):
        return yaml.dump(self.serialized, default_flow_style=False,
                         encoding=None)
def __initialize_kmeans(self):
        initial_centers = kmeans_plusplus_initializer(self.__sample, self.__amount).initialize()
        kmeans_instance = kmeans(self.__sample, initial_centers, ccore = True)
        kmeans_instance.process()