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Unsupervised Functional Data Clustering Based on Adaptive Weights

DOI: 10.4236/ojs.2023.132011, PP. 212-221

Keywords: Functional Data, Unsupervised Learning Clustering, Functional Principal Component Analysis, Adaptive Weight

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Abstract:

In recent years, functional data has been widely used in finance, medicine, biology and other fields. The current clustering analysis can solve the problems in finite-dimensional space, but it is difficult to be directly used for the clustering of functional data. In this paper, we propose a new unsupervised clustering algorithm based on adaptive weights. In the absence of initialization parameter, we use entropy-type penalty terms and fuzzy partition matrix to find the optimal number of clusters. At the same time, we introduce a measure based on adaptive weights to reflect the difference in information content between different clustering metrics. Simulation experiments show that the proposed algorithm has higher purity than some algorithms.

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