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arXiv 1012.4763cs.DS
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一种简单实用的隐私数据差异释放算法

A simple and practical algorithm for differentially private data release

Moritz Hardt, Katrina Ligett, Frank McSherry

摘要:

我们提出了新的理论结果差异私人数据发布有用的计数查询的任何目标类,再加上各种现实世界的数据集上的实验结果。具体来说,我们研究了[Hardt和Rothblum,2010]的乘法权重方法与[McSherry和Talwar,2007]的指数机制的简单组合。乘性权重框架允许我们保持和改进近似给定数据集的分布,相对于一组计数查询。我们使用指数机制来选择当前分布最不正确跟踪的那些查询。结合这两者,我们快速接近一个分布,该分布与给定查询集上的数据集一致,误差很小。由此产生的算法及其分析是简单的,但仍然改善了以前的工作中的错误和运行时间。我们还实证证明了我们的方法的实用性,在统计界常用的列联表发布的几个数据集。

英文摘要:

We present new theoretical results on differentially private data release useful with respect to any target class of counting queries, coupled with experimental results on a variety of real world data sets. Specifically, we study a simple combination of the multiplicative weights approach of [Hardt and Rothblum, 2010] with the exponential mechanism of [McSherry and Talwar, 2007]. The multiplicative weights framework allows us to maintain and improve a distribution approximating a given data set with respect to a set of counting queries. We use the exponential mechanism to select those queries most incorrectly tracked by the current distribution. Combing the two, we quickly approach a distribution that agrees with the data set on the given set of queries up to small error. The resulting algorithm and its analysis is simple, but nevertheless improves upon previous work in terms of both error and running time. We also empirically demonstrate the practicality of our approach on several data sets commonly used in the statistical community for contingency table release.

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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