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Personalized Privacy Preservation in Consumer Mobile Trajectories

Meghanath Macha (), Natasha Zhang Foutz (), Beibei Li () and Anindya Ghose ()
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Meghanath Macha: Information Systems and Management, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
Natasha Zhang Foutz: McIntire School of Commerce, University of Virginia, Charlottesville, Virginia 22903
Beibei Li: Information Systems and Management, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
Anindya Ghose: New York University (NYU) - Leonard N. Stern School of Business, New York, New York 10012

Information Systems Research, 2024, vol. 35, issue 1, 249-271

Abstract: Ubiquitous mobile technologies have been producing massive swaths of consumer location data, giving rise to an elaborate multibillion-dollar ecosystem. In this ecosystem, some consumers share personal data in exchange for economic benefits, including personalized recommendations; data aggregators curate and monetize data by sharing data with advertisers, and advertisers often utilize such data for location-based marketing. While these various entities can benefit from such data sharing, privacy risks can prevail. This creates an opportunity for data aggregators to implement an effective privacy preserving framework to balance potential privacy risks to consumers and data utilities to advertisers before sharing data with advertisers. We hence propose a personalized and flexible framework that quantifies personalized privacy risks, performs personalized data obfuscation, and flexibly accommodates a variety of risks, utilities, and acceptable levels of risk-utility trade-off. Leveraging machine learning methods, we illustrate the power of the framework with two privacy risks and two utilities. Validating the framework on one million consumer trajectories, we demonstrate potential privacy risks in the absence of data obfuscation. Outperforming ten baselines from the latest literature, the proposed framework significantly reduces each consumer’s privacy risk while preserving an advertiser’s utility. As industries increasingly unleash the power of location big data, this research offers an imperatively needed framework to balance privacy risks and data utilities, and to sustain a secure and self-governing multibillion-dollar location ecosystem.

Keywords: consumer privacy; privacy preservation data publishing; mobile location data; machine learning; location-based marketing (search for similar items in EconPapers)
Date: 2024
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