The development of mobile location technology promotes the collection and sharing of loca-tion data,which leads to the problem of privacy disclosure of location data sets.However,the exist-ing privacy protection technology is difficult to resist the attack of attackers'background knowledge.As a strictly provable privacy protection model,differential privacy can effectively prevent arbitrary background knowledge attacks.This paper summarizes the basic theory of differential privacy and its application in location data partitioning,focuses on the differential privacy budget allocation strategy and location data division method,analyzes and summarizes its methods.Based on the comparative analysis of existing technologies,the direction of further research is prospected.
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