Data Collaboration Analysis with Orthogonal Basis Alignment
- URL: http://arxiv.org/abs/2403.02780v3
- Date: Tue, 17 Dec 2024 07:23:04 GMT
- Title: Data Collaboration Analysis with Orthogonal Basis Alignment
- Authors: Keiyu Nosaka, Yuichi Takano, Akiko Yoshise,
- Abstract summary: The Data Collaboration (DC) framework provides a privacy-preserving solution for multi-source data fusion.<n>Despite its strengths, the DC framework often encounters performance instability due to theoretical challenges in aligning the bases used for mapping raw data.<n>This study addresses these challenges by establishing a rigorous theoretical foundation for basis alignment within the DC framework.
- Score: 2.928964540437144
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: The Data Collaboration (DC) framework provides a privacy-preserving solution for multi-source data fusion, enabling the joint analysis of data from multiple sources to achieve enhanced insights. It utilizes linear transformations with secretly selected bases to ensure privacy guarantees through non-iterative communication. Despite its strengths, the DC framework often encounters performance instability due to theoretical challenges in aligning the bases used for mapping raw data. This study addresses these challenges by establishing a rigorous theoretical foundation for basis alignment within the DC framework, formulating it as an optimization problem over orthogonal matrices. Under specific assumptions, we demonstrate that this problem can be reduced to the Orthogonal Procrustes Problem, which has a well-known analytical solution. Extensive empirical evaluations across diverse datasets reveal that the proposed alignment method significantly enhances model performance and computational efficiency, outperforming existing approaches. Additionally, it demonstrates robustness across varying levels of differential privacy, thus enabling practical and reliable implementations of the DC framework.
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