Compositional data
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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. Me
A representation of a tree in terms of its orthogonal components. l represents an internal node, an element of the orthonormal basis. This is a precursor to using the tree as a scaffold for the ilr transform
Aitchison simplex
Triangle
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A triangle or trigon is a polygon consisting of three sides connected at three corners. It is one of the basic shapes in geometry and the simplest of polygons. The corners, also called vertices, are z
Compositional data
…ternary plots. The use of a barycentric plot on three variables graphically depicts the ratios of the three variables as positions in an equilateral triangle. Under conditions where Poisson noise, overdispersion, or additive instrumental errors occur, the process of composition (scaling by the total sum…
All Gizah Pyramids
Cathédrale Notre Dame Portail du transept sud, dit portail Saint Etienne, Gables, côté droit Paris 04 Médiathèque de l'architecture et du patrimoine APMH00021092
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