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Compositional data

In statistics, compositional data are quantitative descriptions of the parts of some whole, conveying relative information. Mathematically, compositional data is represented by points on a simplex. Measurements involving probabilities, proportions, percentages, and ppm can all be thought of as compositional data.

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Overview

Ternary plot

Simplicial sample space

Aitchison geometry

Linear transformations

Examples

Advanced semantic analysis

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Map overview Semantic statistics

Compositional data

Nodes37
Edges36
Triples71
Avg. degree1.95
Density0.054054
Components1

How this topic connects Entity context

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Compositional data

Top relations

related to References · 27
Compositional data → Aitchison, Analysis, Analyzing Compositional Data, Barcelo-Vidal, Bibcode, Boogaart, Carles, Egozcue, Gerald, Glahn, Gloria, Groups, ISBN, Isometric, Juan Jose, Mateu-Figueras, Mathematical Geology, Modeling, Monographs, Pawlowsky-Glahn
related to External links · 12
Compositional data → CoDaWeb, Compositional Data Analysis, Compositional Data WebsitePawlowsky-Glahn, Data Analysis, Egozcue, Girona, How, Lecture Notes, Should Geologists Use Compositional, Tolosana-Delgado, Universitat, Why
related to The problem of noise · 10
Compositional data → As, Chebyshev's, In, Letting, Poisson, Similarly, The, Their, To, Under
related to Examples · 9
Compositional data → As, Christians, DNA, In, Jews, Muslims, RNA, The, These
related to Simplicial sample space · 4
Compositional data → In, John Aitchison, The, Therefore
related to Ternary plot · 2
Compositional data → Compositional, The
is a · 1
Compositional data → simplex

Important terminology Word statistics

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Important terminology

data displaystyle compositional odds space ratio simplex components noise given transform statistics vector sample composition d-1 relative mathbb sum total

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Compositional datais asimplex0.90text
questionnaire surveysinstance ofThe simpler case is in empirical studies0.80text
where each respondent's total allocation is fixedinstance ofThe simpler case is in empirical studies0.80text
one must deal solely with the effects of closureinstance ofThe simpler case is in empirical studies0.80text
oddsinstance ofThe simpler case is in empirical studies0.80text
odds ratios serve as invariant statisticsinstance ofThe simpler case is in empirical studies0.80text
pHinstance ofThis transform is commonly used in chemistry with measurements0.80text
Compositional datarelated to ExamplesIn0.60section
Compositional datarelated to ExamplesAs0.60section
Compositional datarelated to ExamplesThese0.60section
Compositional datarelated to ExamplesChristians0.60section
Compositional datarelated to ExamplesMuslims0.60section

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