Functional Clustering of Longitudinal Data
This study considers two clustering criteria to achieve difierent goals of grouping similar curves. These criteria are based on the minimal L 2 distance and the maximal functional correlation defined in this study, respectively. Each cluster centers on a subspace spanned by the cluster mean and covariance eigenfunctions of the underlying random functions. Clusters can thus be identified by the subspace projection of curves.
KeywordsRandom Function Cluster Membership Functional Correlation Cluster Subspace Cluster Criterion
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