def METHOD_NAME(self):
    # logging.info("################aggregate: %d" % len(w_locals))
    # N = self.args.client_number
    # n_users_layer = np.ceil(np.log(N)).astype(int)
    # n_layer = np.ceil(float(N) / float(n_users_layer)).astype(int)
    # Set List of send_to, send_from
    # Initialize the buffer of clients
    pass