Non-readily identifiable data collaboration analysis for multiple datasets including personal information

• URL: http://arxiv.org/abs/2208.14611v1
• Date: Wed, 31 Aug 2022 03:19:17 GMT
• Title: Non-readily identifiable data collaboration analysis for multiple datasets including personal information
• Authors: Akira Imakura, Tetsuya Sakurai, Yukihiko Okada, Tomoya Fujii, Teppei Sakamoto, Hiroyuki Abe
• Abstract summary: Data confidentiality and cross-institutional communication are critical for medical datasets. In this study, the identifiability of the data collaboration analysis is investigated. The proposed method exhibits a non-readily identifiability while maintaining a high recognition performance.
• Score: 7.315551060433141
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Multi-source data fusion, in which multiple data sources are jointly analyzed to obtain improved information, has considerable research attention. For the datasets of multiple medical institutions, data confidentiality and cross-institutional communication are critical. In such cases, data collaboration (DC) analysis by sharing dimensionality-reduced intermediate representations without iterative cross-institutional communications may be appropriate. Identifiability of the shared data is essential when analyzing data including personal information. In this study, the identifiability of the DC analysis is investigated. The results reveals that the shared intermediate representations are readily identifiable to the original data for supervised learning. This study then proposes a non-readily identifiable DC analysis only sharing non-readily identifiable data for multiple medical datasets including personal information. The proposed method solves identifiability concerns based on a random sample permutation, the concept of interpretable DC analysis, and usage of functions that cannot be reconstructed. In numerical experiments on medical datasets, the proposed method exhibits a non-readily identifiability while maintaining a high recognition performance of the conventional DC analysis. For a hospital dataset, the proposed method exhibits a nine percentage point improvement regarding the recognition performance over the local analysis that uses only local dataset.

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