arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.08738cs.ITmath.IT
收藏

非零泄漏下隐私-效用权衡的界

Bounds for Privacy-Utility Trade-off with Non-zero Leakage

Amirreza Zamani, Tobias J. Oechtering, Mikael Skoglund

摘要:

研究了隐私数据隐藏和可观察两种情况下的隐私机制设计。在第一种情况下,代理观察到与私有数据$X$相关的有用数据$Y$,并且想要向用户公开有用信息。采用隐私机制来生成数据$U$,该数据$U$在满足隐私准则的同时最大化关于$Y$的所揭示的信息。在第二种情况下,代理还可以访问私有数据。为此,函数表示引理和强函数表示引理被扩展,放松了独立性条件,从而允许一定的泄漏。第二种情况下,以及这两种情况下的上限,得出的隐私效用权衡的下限。特别是,对于不允许泄漏的情况下,我们的上限和下限改进了以前的边界。

英文摘要:

The design of privacy mechanisms for two scenarios is studied where the private data is hidden or observable. In the first scenario, an agent observes useful data $Y$, which is correlated with private data $X$, and wants to disclose the useful information to a user. A privacy mechanism is employed to generate data $U$ that maximizes the revealed information about $Y$ while satisfying a privacy criterion. In the second scenario, the agent has additionally access to the private data. To this end, the Functional Representation Lemma and Strong Functional Representation Lemma are extended relaxing the independence condition and thereby allowing a certain leakage. Lower bounds on privacy-utility trade-off are derived for the second scenario as well as upper bounds for both scenarios. In particular, for the case where no leakage is allowed, our upper and lower bounds improve previous bounds.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑