Clustering time series based on dependence structure

Beibei Zhang and Baiguo An

PLOS ONE, 2018, vol. 13, issue 11, 1-22

Abstract: The clustering of time series has attracted growing research interest in recent years. The most popular clustering methods assume that the time series are only linearly dependent but this assumption usually fails in practice. To overcome this limitation, in this paper, we study clustering methods applicable to time series with a general and dependent structure. We propose a copula-based distance to measure dissimilarity among time series and consider an estimator for it, where the strong consistency of the estimator is guaranteed. Once the pairwise distance matrix for time series has been obtained, we apply a hierarchical clustering algorithm to cluster the time series and ensure its consistency. Numerical studies, including a large number of simulations and analysis of practical data, show that our method performs well.

Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0206753

DOI: 10.1371/journal.pone.0206753

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