Temporal Weighted Averaging for Asynchronous Federated Intrusion Detection Systems

Algorithm 1Temporal weighted averaging.

(1)	: number of client devices broadcast in each round
(2)	nnew: number of clients received in each round
(3)	: threshold server waiting time
(4)	t: number of timesteps
(5)	: timestep in which the weight update originates
(6)	C: initial threshold constant based on observation of training data
(7)	P(e): expected ratio of devices.
(8)	P(r): ratio of received devices.
9	procedure Server
10
11	: server model initialization
12	, B, n: initialize hyperparameters
13	P(e) 0.8
14	for to t do
15	Broadcast()
16	Wait()
17	buffer
18
19	P(r) =
20
21
22	end for
23	end procedure
24	procedure Client
25	for to t do
26	while buffer do
27	Wait()
28	end while
29	Train ()
30	end for
31	end procedure