User Recruitment Algorithm for Maximizing Quality under Limited Budget in Mobile Crowdsensing

Table 1

The main symbols and interpretations.

Symbols	Interpretations
P, A	Collection of mobile users and tasks
i, j, t	Index values for mobile users, perception tasks, and rounds
,	User i represents the set of tasks that can be completed, represents the corresponding cost, and represents the user's cost parameter
	Task weight
P, , L, Y	The set of all options, the set of options selected in the ith round, the maximum number of options per user, and the number of users selected in each round
B	The budget value given by the task initiator
	Perceived quality value of user i completing task j in round t
	In the tth round, the average perceived quality value of user i
	Until the tth round, user i's perceived quality value based on UCB
	The expected value of user i's perceived quality
	Until the tth round, the number of times has been selected
	Until the tth round, the number of times that mobile user i was selected