Abstract
Federated learning is a hot topic on privacy preserving data analysis and has also been applied to fuzzy c-means clustering. In this paper, a federated learning scheme is proposed for linear fuzzy clustering with horizontally distributed data, where each cluster is represented by a linear-shape prototype. In order to merge the client-wise independent clustering results without violating personal privacy, gradient information of each prototype instead of original observation are shared at the centralized server. The objective function is defined with the least square criterion, which is useful in handling component-wise errors and makes it possible to find cluster basis vectors without solving an Eigen problem. Therefore, attribute-wise gradient decent learning can be realized by utilizing only gradient information of prototype parameters at the central server. The global prototypes are securely updated then distributed to clients for next updating. Experimental results demonstrate that the proposed algorithm is useful for reconstructing the whole data result under privacy preservation.
This work was supported in part by JSPS KAKENHI Grant Number JP18K11474 and JP22K12198.
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Honda, K., Amejima, R. (2023). A Federated Learning Model for Linear Fuzzy Clustering with Least Square Criterion. In: Honda, K., Le, B., Huynh, VN., Inuiguchi, M., Kohda, Y. (eds) Integrated Uncertainty in Knowledge Modelling and Decision Making. IUKM 2023. Lecture Notes in Computer Science(), vol 14376. Springer, Cham. https://doi.org/10.1007/978-3-031-46781-3_2
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