Towards mobility reports with user-level privacy

IF 1.2 Q4 TELECOMMUNICATIONS
Alexandra Kapp, Saskia Nuñez von Voigt, Helena Mihaljevic, Florian Tschorsch
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引用次数: 0

Abstract

ABSTRACT The importance of human mobility analyses is growing in both research and practice, especially as applications for urban planning and mobility rely on them. Aggregate statistics and visualizations play an essential role as building blocks of data explorations and summary reports, the latter being increasingly released to third parties such as municipal administrations or in the context of citizen participation. However, such explorations already pose a threat to privacy as they reveal potentially sensitive location information, and thus should not be shared without further privacy measures. There is a substantial gap between state-of-the-art research on privacy methods and their utilization in practice. We thus conceptualize a mobility report with differential privacy guarantees and implement it as open-source software to enable a privacy-preserving exploration of key aspects of mobility data in an easily accessible way. Moreover, we evaluate the benefits of limiting user contributions using three data sets relevant to research and practice. Our results show that even a strong limit on user contribution alters the original geospatial distribution only within a comparatively small range, while significantly reducing the error introduced by adding noise to achieve privacy guarantees.
面向具有用户级隐私的移动报告
人类流动性分析在研究和实践中的重要性日益增加,特别是城市规划和流动性的应用依赖于它们。汇总统计和可视化作为数据探索和摘要报告的基石发挥着至关重要的作用,后者越来越多地向市政当局等第三方或在公民参与的背景下发布。然而,这种探索已经对隐私构成了威胁,因为它们会泄露潜在的敏感位置信息,因此在没有进一步的隐私措施的情况下不应该共享。隐私方法的最新研究与实际应用之间存在着很大的差距。因此,我们将具有不同隐私保证的移动性报告概念化,并将其作为开源软件实现,以便以易于访问的方式对移动性数据的关键方面进行隐私保护探索。此外,我们使用与研究和实践相关的三个数据集来评估限制用户贡献的好处。我们的研究结果表明,即使对用户贡献进行严格限制,也只能在相对较小的范围内改变原始地理空间分布,同时显著降低了通过添加噪声来实现隐私保证所带来的误差。
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来源期刊
CiteScore
3.70
自引率
8.70%
发文量
12
期刊介绍: The aim of this interdisciplinary and international journal is to provide a forum for the exchange of original ideas, techniques, designs and experiences in the rapidly growing field of location based services on networked mobile devices. It is intended to interest those who design, implement and deliver location based services in a wide range of contexts. Published research will span the field from location based computing and next-generation interfaces through telecom location architectures to business models and the social implications of this technology. The diversity of content echoes the extended nature of the chain of players required to make location based services a reality.
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