Efficient Semantic Enrichment Process for Spatiotemporal Trajectories

Table 1

Table of notations.

Notations	Definition
	A spatio-temporal trajectory
	A subtrajectory of
	A stop subtrajectory of the trajectory
	A move subtrajectory of the trajectory
	A geospatial object
	A subtrajectory of a semantic trajectory
	A stop subtrajectory of a semantic trajectory
	A move subtrajectory of a semantic trajectory
	A semantic trajectory
	The set of semantic trajectories
	The DBSCAN clustering distance threshold
	The DBSCAN clustering point number threshold
, , ,	Four similar region radii
	The similarity threshold
	The set of of
	The set of of
	The set of stop episodes of OST
	The set of move episodes of