def _compute_radii(self):

        # use supplied radii if present
        radii = self._get_user_components('radii')

        # compute radii
        if (radii is None):
            centers = self.components_['centers']

            n_centers = centers.shape[0]
            max_dist = np.max(pairwise_distances(centers))
            radii = np.ones(n_centers) * max_dist/sqrt(2.0 * n_centers)

        self.components_['radii'] = radii
Returns the SQL that will set the connection's time zone.
dataset/ETHPy150Open dclambert/Python-ELM/random_layer.py/RandomLayer._compute_radii--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/db/backends/__init__.py/BaseDatabaseOperations.set_time_zone_sql