NDLI: Select-Organize-Anonymize: A Framework for Trajectory Data Anonymization

Content Provider	IEEE Xplore Digital Library
Author	Poulis, G. Skiadopoulos, S. Loukides, G. Gkoulala-Divanis, A.
Copyright Year	2013
Abstract	Advances in positioning technologies together with the wide adoption of GPS-enabled smartphones enable accurate and low-cost tracking of user location. This allows the collection of large amounts of person-specific mobility data that offer remarkable opportunities for data analysis. Yet, the sharing of such data poses significant privacy risks. This enunciates the need for privacy-preserving, trajectory data publishing methods. Existing approaches are either limited in their privacy specification component or they incur significant, and often unnecessary, data distortion. In response, we propose a novel framework for anonymizing trajectory data that prevents the disclosure of both identity and sensitive location information, while retaining data utility. Our framework involves: (i) selecting similar trajectories, by employing Z-ordering or data projections on frequent sub trajectories, (ii) organizing the selected trajectories into carefully constructed clusters, and (ii) anonymizing each cluster separately. We develop algorithms to realize our framework, which are effective and efficient, as verified by extensive experiments.
Sponsorship	Toshiba
Starting Page	867
Ending Page	874
File Size	339855
Page Count	8
File Format	PDF
e-ISBN	9781479931422
DOI	10.1109/ICDMW.2013.136
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-12-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Algorithm design and analysis Data privacy Publishing Clustering algorithms Trajectory Electronic mail Sorting
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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