About: Covariance-based variable selection for compositional data

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Omitting variables in compositional data analysis may lead to a substantial change in results from that of multivariate statistical analysis. In particular, this is the case for principal component analysis and the compositional biplot, where both the interpretation of loadings and scores of the remaining subcomposition are affected. A stepwise procedure is introduced that allows for a reduction of the original composition to a subcomposition by avoiding a substantial change of the information, like those carried by the compositional biplot. The subcomposition is easier to handle and interpret. Numerical results give evidence of the usefulness of the procedure. Omitting variables in compositional data analysis may lead to a substantial change in results from that of multivariate statistical analysis. In particular, this is the case for principal component analysis and the compositional biplot, where both the interpretation of loadings and scores of the remaining subcomposition are affected. A stepwise procedure is introduced that allows for a reduction of the original composition to a subcomposition by avoiding a substantial change of the information, like those carried by the compositional biplot. The subcomposition is easier to handle and interpret. Numerical results give evidence of the usefulness of the procedure. (en)
Title	Covariance-based variable selection for compositional data Covariance-based variable selection for compositional data (en)
skos:prefLabel	Covariance-based variable selection for compositional data Covariance-based variable selection for compositional data (en)
skos:notation	RIV/61989592:15310/13:33144751!RIV14-MSM-15310___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(EE2.3.20.0170), S
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Hron, Karel Donevska, Sandra Fišerová, Eva Filzmoser, Peter
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Palackého v Olomouci / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	67226
http://linked.open...ai/riv/idVysledku	RIV/61989592:15310/13:33144751
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Aitchison geometry on the simplex, Centered log-ratio transformation, Isometric log-ratio transformation, Variable selection (en)
http://linked.open.../riv/klicoveSlovo	Centered log-ratio transformation Variable selection Aitchison geometry on the simplex Isometric log-ratio transformation
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[F376AEDD2876]
http://linked.open...i/riv/nazevZdroje	Mathematical Geosciences
http://linked.open...in/vavai/riv/obor	BB
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Building of Research Team in the Field of Environmental Modeling and the Use of Geoinformation Systems with the Consequence in Participation in International Networks and Programs
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	45
http://linked.open...iv/tvurceVysledku	Hron, Karel Filzmoser, Peter Donevska, Sandra Fišerová, Eva
http://linked.open...ain/vavai/riv/wos	000319291400006
issn	1874-8961
number of pages	14 (xsd:int)
http://bibframe.org/vocab/doi	10.1007/s11004-013-9450-9
http://localhost/t...ganizacniJednotka	15310

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