Visual Analytic Method for Metro Anomaly Detection and Diffusion

Algorithm 1

Spatiotemporal anomaly diffusion algorithm for our system.

	Input: the abnormal points for all stations.
	Output: the diffusion relationship for all stations.
(1)	for do
(2)	for do
(3)	if .flag = = 1 then?
(4)	is inserted into
(5)	.flag = 1
(6)	while ! = null do
(7)	delete first element in the
(8)	insert into
(9)	for do
(10)	if ! = 0 then
(11)	is inserted into
(12)	.flag = 1
(13)	end
(14)	for set () do
(15)	if ! = 0 then
(16)	is inserted into
(17)	.flag = 1
(18)	end
(19)	end
(20)	if () ≥ 2 then
(21)	return
(22)	end
(23)	end