Detecting Suspects by Large-Scale Trajectory Patterns in the City

Algorithm 1

Transit compression algorithm (TCA).

	Input: original trajectory T, distance threshold , start point , and end point
	Output: compressed trajectory
(1)	//set start and end points
(2)	While ! =  //where is the last point in a trajectory
(3)	For each
(4)
(5)	If then //higher than the threshold which is important for the path
(6)	; ; ;
(7)	Break
(8)	return