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arXiv · 2208.13073

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

Michail Tsagris
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Abstract

We present a new model for analyzing compositional data with structural zeros. Inspired by \cite{butler2008} 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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Michail Tsagris. 2026-09-16. Modelling structural zeros in compositional data via a zero-censored multivariate normal model. https://arxiv.org/abs/2208.13073

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