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arXiv 2209.01468cs.CRcs.ITmath.IT
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随机隐私预算差分隐私

Randomized Privacy Budget Differential Privacy

Meisam Mohammady

摘要:

在通过从数据中发现知识来追求更好的效用的同时,个人的隐私可能在分析期间受到损害。为此,差分隐私已被广泛认为是最先进的隐私概念。通过要求输入中任何个人数据的存在仅略微影响输出上的分布,差分隐私提供了针对拥有任意背景的对手的强有力的保护。然而,隐私约束(例如,由差分隐私强加的随机化程度)可能使得所发布的数据对分析不太有用,隐私和效用之间的基本折衷(即,分析精度)在各种环境中引起了极大的关注。在这份报告中,我们提出了DP机制与随机参数,即,随机化隐私预算,并形式化地分析了其隐私性和效用,证明了DP机制中的随机化隐私预算将极大地提高准确性。

英文摘要:

While pursuing better utility by discovering knowledge from the data, individual's privacy may be compromised during an analysis. To that end, differential privacy has been widely recognized as the state-of-the-art privacy notion. By requiring the presence of any individual's data in the input to only marginally affect the distribution over the output, differential privacy provides strong protection against adversaries in possession of arbitrary background. However, the privacy constraints (e.g., the degree of randomization) imposed by differential privacy may render the released data less useful for analysis, the fundamental trade-off between privacy and utility (i.e., analysis accuracy) has attracted significant attention in various settings. In this report we present DP mechanisms with randomized parameters, i.e., randomized privacy budget, and formally analyze its privacy and utility and demonstrate that randomizing privacy budget in DP mechanisms will boost the accuracy in a humongous scale.

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。

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