Localized differential private data exchange method and storage medium
A differential privacy and data exchange technology, applied in the field of private data exchange, can solve the problems of compression loss accuracy, limited practical effect, and high restoration calculation overhead, and achieve the effects of wide application, high transmission accuracy, and reduced overhead.
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[0050] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0051] Such as figure 1 As shown, the localized differential privacy data exchange method of the present invention comprises steps:
[0052] (1) The server and the client negotiate the pseudo-random number generation algorithm G, and agree on the differential privacy budget parameter ∈ and the data range L.
[0053] A random function π satisfies ]-localized differential privacy (∈>0) if and only if for any input v, v', for any value y in the range of π, there are:
[0054]
[0055] Among them, Pr[π(v)=y] represents the probability that the output result of the function π is equal to y after acting on the input v. By definition, the smaller the value of ∈, the weaker the ability of the function π to distinguish between two datasets with slight differences, in other words, the stronger the ability to protect the privacy of ...
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