On-line analysis of split sediment cores by XRF core scanners has become increasingly
popular in the past decade, because it allows nondestructive extraction of near-continuous …

New imputation algorithms for estimating missing values in compositional data are
introduced. A first proposal uses the k-nearest neighbor procedure based on the Aitchison …

The log-ratio methodology represents a powerful set of methods and techniques for
statistical analysis of compositional data. These techniques may be used for the estimation …

Geochemical data are typically reported as compositions, in the form of some proportions
such as weight percents, parts per million, etc., subject to a constant sum (eg 100 …

Multivariate compositional data analysis methods were used to investigate geochemical
data for water injected during hydraulic fracturing and for water produced from 19 Marcellus …

This paper serves two goals. The first part shows how mass evolution processes of different
nature become undistinguishable once we take a size-limited, noisy sample of its …

Abstract Based on its Permian‐Triassic stratigraphic and biotic evolution, we correlate the
SE Pamir to the Karakoram terrane, and we consider them equivalent, along with the Central …

Intramuscular fat (IMF) content and fatty acid composition affect the organoleptic quality and
nutritional value of pork. A genome-wide association study was performed on 138 Duroc …

The simplex with the Aitchison geometry is a natural sample space for compositional data,
that is, observations carrying only relative information (especially proportions, percentages …

This article describes a study that sought to identify the correlation between social
entrepreneurship and complex thinking competencies in a population of Mexican students …