Detecting Suspects by Large-Scale Trajectory Patterns in the City

Algorithm 2

Location-changed model (LCM).

	Input: all the path P of a certain people
	Output: active tuples
(1)
(2)	for in P do
(3)	if then
(4)
(5)	if then
(6)	,
(7)	if then
(8)	,
(9)	else
(10)	,
(11)	return