Semantic-Aware Top-k Multirequest Optimal Route

Table 2

Meaning of notations.

Notation	Meaning	Notation	Meaning
	A route from to		Top k results are needed
	The requests of user		The distance from to
	The collection of POIs		POI’s spatial information
	The number of services that meet user’s request in route or witness		POI’s keywords
	The number of user’s requests		POI point of interest