Classifying Vehicle Activity to Improve Point of Interest Extraction

Algorithm 1

—preprocessing stage of AVPE.

	inputs: , the set of trajectories,
	, the merge threshold
	, the chosen clustering algorithm, with pretrained parameters
	output: , a set of preprocessed clusters
(1)
(2)	if then
	//merge adjacent clusters up to seconds apart
(3)	for do
(4)	for do
	//calculate time difference between current and previous cluster
(5)
(6)
(7)	if then
	//append all instances from start of previous cluster to end of current cluster
(8)
(9)
(10)	end
(11)	end
(12)	end
(13)	end
(14)	return