An Adaptive Window Size Selection Method for Differentially Private Data Publishing over Infinite Trajectory Stream

Table 1

(a) Original trajectories of vehicles

	t1	t2	t3	t4	t5	∙∙∙
v1	Olympic highway				Sogang bridge	∙∙∙
v2		Sogang bridge			Olympic highway	∙∙∙
v3	Olympic highway	Teheran street	Hongik university		Sogang bridge	∙∙∙

(b) Aggregated traffic data

	t1	t2	t3	t4	t5	∙∙∙
Olympic highway	2	0	0	0	1	∙∙∙
Teheran street	0	1	0	0	0	∙∙∙
Sogang bridge	0	1	0	0	2	∙∙∙
Hongik university	0	0	1	0	0	∙∙∙