Hierarchical Clustering on the Torus


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Authors

  • Ashis SenGupta Department of Population Health Sciences, MCG, Augusta University, GA, USA and Indian Statistical Institute, Kolkata
  • Moumita Roy Midnapore College (Autonomous), Midnapore

https://doi.org/10.56093/JISAS.V80I1.21

Keywords:

Akaike information criterion (AIC); Bayesian information criterion (BIC); Bivariate von-Mises distribution; Expectation-Maximization algorithm; Hierrachical; Clustering.

Abstract

The aim of this paper is to introduce hierarchical clustering for bivariate circular or toroidal data. Here a mixture model approach is used as for model 
based clustering. Here, the clustering is performed in two stages, the first stage being based on the marginal distribution of one of the circular variables 
and the second stage being based on the conditional distribution of the other variable given the former. In particular, two types of such mixture models 
are constructed. A real life application on gene data is made to illustrate the use of the proposed approach. Comparison of the two models is also done 
based on this example.

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Submitted

2026-07-30

Published

2026-07-30

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Section

Articles

How to Cite

Ashis SenGupta, & Moumita Roy. (2026). Hierarchical Clustering on the Torus . Journal of the Indian Society of Agricultural Statistics, 80(01), 249-260. https://doi.org/10.56093/JISAS.V80I1.21
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