Modelling structural zeros in compositional data via a zero-censored multivariate normal model

2022/08/27 by Michail Tsagris, Tsagris, Michail
Computer Science · #Geochemistry and Geologic Mapping #Rough Sets and Fuzzy Logic #stat.ME

paper · pdf · doi:10.48550/arxiv.2208.13073

openalex publication_date 2022/08/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31

Abstract

We present a new model for analyzing compositional data with structural zeros. Inspired by \citebutler2008 who suggested a model in the presence of zero values in the data we propose a model that treats the zero values in a different manner. Instead of projecting every zero value towards a vertex, we project them onto their corresponding edge and fit a zero-censored multivariate model.

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