Modeling and Analysis of Compositional Data presents a practical and comprehensive
introduction to the analysis of compositional data along with numerous examples to illustrate …

For almost 30years it has been known that compositional (closed) data have special
geometrical properties. In environmental sciences, where the concentration of chemical …

There is lack of research and documentation of actual (as opposed to theoretical) benefits
(eg, mineral deposit discovery) of developments in compositional data analysis and …

Compositional data are those which contain only relative information. They are parts of
some whole. In most cases they are recorded as closed data, ie data summing to a constant …

Applied geochemistry and environmental sciences invariably deal with compositional data.
Classically, the original or log-transformed absolute element concentrations are studied …

The log-ratio approach to compositional data (CoDa) analysis has now entered a mature
phase. The principles and statistical tools introduced by J. Aitchison in the eighties have …

Most data in environmental sciences and geochemistry are compositional. Already the unit
used to report the data (eg, μg/l, mg/kg, wt%) implies that the analytical results for each …

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 …

Environmental sciences usually deal with compositional (closed) data. Whenever the
concentration of chemical elements is measured, the data will be closed, ie the relevant …