论文标题

在差异隐私的混乱模型中,矢量值消息的聚合和转换

Aggregation and Transformation of Vector-Valued Messages in the Shuffle Model of Differential Privacy

论文作者

Scott, Mary, Cormode, Graham, Maple, Carsten

论文摘要

通信,存储和计算技术的进步允许通过分布式设备收集和处理大量数据。结合这些终点的信息可以实现重大的社会利益,但在保护个人的隐私方面面临挑战,在日益受监管的世界中尤其重要。差异隐私(DP)是一种为汇总和释放提供严格且可证明的隐私保证的技术。引入了DP的洗牌模型,以克服有关局部DP算法和中央DP的隐私风险的挑战。在这项工作中,我们在洗牌模型的上下文中介绍了一个新的矢量汇总协议。本文的目的是双重的。首先,我们使用高级构图结果提供一个单个消息协议,以用于混淆模型中实际向量的求和。其次,我们通过实现离散的傅立叶变换来对通过使用此协议实现的错误进行改进,从而最大程度地减少了初始误差,以通过转换本身的准确性损失为代价。这项工作将进一步探索更复杂的结构,例如在这种情况下矩阵和高维张量,这两者都依赖于向量情况的功能。

Advances in communications, storage and computational technology allow significant quantities of data to be collected and processed by distributed devices. Combining the information from these endpoints can realize significant societal benefit but presents challenges in protecting the privacy of individuals, especially important in an increasingly regulated world. Differential privacy (DP) is a technique that provides a rigorous and provable privacy guarantee for aggregation and release. The Shuffle Model for DP has been introduced to overcome challenges regarding the accuracy of local-DP algorithms and the privacy risks of central-DP. In this work we introduce a new protocol for vector aggregation in the context of the Shuffle Model. The aim of this paper is twofold; first, we provide a single message protocol for the summation of real vectors in the Shuffle Model, using advanced composition results. Secondly, we provide an improvement on the bound on the error achieved through using this protocol through the implementation of a Discrete Fourier Transform, thereby minimizing the initial error at the expense of the loss in accuracy through the transformation itself. This work will further the exploration of more sophisticated structures such as matrices and higher-dimensional tensors in this context, both of which are reliant on the functionality of the vector case.

扫码加入交流群

加入微信交流群

微信交流群二维码

扫码加入学术交流群,获取更多资源