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A Differential Privacy Framework with Adjustable Efficiency–Utility Trade-Offs for Data Collection

Author

Listed:
  • Jongwook Kim

    (Department of Computer Science, Sangmyung University, Seoul 03016, Republic of Korea)

  • Sae-Hong Cho

    (School of Computer Engineering, Hansung University, Seoul 02876, Republic of Korea)

Abstract

The widespread use of mobile devices has led to the continuous collection of vast amounts of user-generated data, supporting data-driven decisions across a variety of fields. However, the growing volume of these data raises significant privacy concerns, especially when they include personal information vulnerable to misuse. Differential privacy (DP) has emerged as a prominent solution to these concerns, enabling the collection of user-generated data for data-driven decision-making while protecting user privacy. Despite their strengths, existing DP-based data collection frameworks are often faced with a trade-off between the utility of the data and the computational overhead. To address these challenges, we propose the differentially private fractional coverage model (DPFCM), a DP-based framework that adaptively balances data utility and computational overhead according to the requirements of data-driven decisions. DPFCM introduces two parameters, α and β , which control the fractions of collected data elements and user data, respectively, to ensure both data diversity and representative user coverage. In addition, we propose two probability-based methods for effectively determining the minimum data each user should provide to satisfy the DPFCM requirements. Experimental results on real-world datasets validate the effectiveness of DPFCM, demonstrating its high data utility and computational efficiency, especially for applications requiring real-time decision-making.

Suggested Citation

  • Jongwook Kim & Sae-Hong Cho, 2025. "A Differential Privacy Framework with Adjustable Efficiency–Utility Trade-Offs for Data Collection," Mathematics, MDPI, vol. 13(5), pages 1-21, February.
  • Handle: RePEc:gam:jmathe:v:13:y:2025:i:5:p:812-:d:1602547
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    References listed on IDEAS

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    1. Kaixuan Li & Hua Zhang & Yanxin Xu & Zhenyan Liu, 2024. "A Range Query Scheme for Spatial Data with Shuffled Differential Privacy," Mathematics, MDPI, vol. 12(13), pages 1-15, June.
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