Exploiting Spatial and Temporal for Point of Interest Recommendation

Table 1

Symbols.

Symbol	Description
	Set of all users
	A user and
	Set of all POIs
	A POI and
	A time interval
	Set of all days
	A day and
	Check-in that depicts user visiting location at time
	Collection of check-ins of all users visiting all locations
FC	Set of check-ins, where the location of each check-in is familiar to user
UC	Set of check-ins, where the location of each check-in is unfamiliar to user