[Retracted] Design of Sponsored Search Auction Mechanism for Federated Learning Advertising Platform

Table 1

List of mathematical symbols and their definitions.

Symbol	Meaning
	Index of the data provider
	Index of the advertising slot
	Probability that the data user clicks the ad slot
	Bid from data provider
	Valuation from data provider
	FL contribution index of data provider
	Ranking score of data provider
	Result set
	Utility function of data provider
	Social surplus function