2013
Autores
Adelaide Figueiredo; Paulo Gomes;
Publicação
Abstract
2015
Autores
Adelaide Figueiredo; Fernanda Figueiredo;
Publicação
Abstract
2018
Autores
Adelaide Figueiredo; Fernanda Figueiredo;
Publicação
Abstract
2017
Autores
Fernanda Figueiredo; Adelaide Figueiredo; Alexandra Ramos; Paulo Teles;
Publicação
Abstract
2025
Autores
Figueiredo, A;
Publicação
Springer Proceedings in Mathematics and Statistics
Abstract
We propose an approach to cluster and classify compositional data. We transform the compositional data into directional data using the square root transformation. To cluster the compositional data, we apply the identification of a mixture of Watson distributions on the hypersphere and to classify the compositional data into predefined groups, we apply Bayes rules based on the Watson distribution to the directional data. We then compare our clustering results with those obtained in hierarchical clustering and in the K-means clustering using the log-ratio transformations of the data and compare our classification results with those obtained in linear discriminant analysis using log-ratio transformations of the data. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.
2016
Autores
Adelaide Figueiredo; Fernanda Figueiredo;
Publicação
Abstract
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