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stat.ME2022
The chiPower transformation: a valid alternative to logratio transformations in compositional data analysis
Michael Greenacre
The approach to analysing compositional data has been dominated by the use of logratio transformations, to ensure exact subcompositional coherence and, in some situations, exact is…
stat.ME2022★ 11 cited
Aitchison's Compositional Data Analysis 40 Years On: A Reappraisal
Michael Greenacre, Eric Grunsky, John Bacon-Shone +2
The development of John Aitchison's approach to compositional data analysis is followed since his paper read to the Royal Statistical Society in 1982. Aitchison's logratio approach…
stat.ME2021
Compositional data analysis -- linear algebra, visualization and interpretation
Michael Greenacre
Compositional data analysis is concerned with multivariate data that have a constant sum, usually 1 or 100\%. These are data often found in biochemistry and geochemistry, but also…