Open Conference Systems, CLADAG2023

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Model-based simultaneous classification and reduction for three-way ordinal data
Monia Ranalli, Roberto Rocci

Last modified: 2023-07-06


A finite mixture model for the unsupervised classification of three-way ordinal data is proposed. Technically, it is a finite mixture of Gaussians observed only through a discretization of its variates. Group specific means and covariances are reparameterized according to parsimonious models. Estimation is carried out through a compositeapproach to reduce the computational burden.