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Covariance-based variable selection for compositional data
the interpretation of loadings and scores of the remaining subcomposition are affected composition to a subcomposition by avoiding a substantial change of the information, like those carried by the compositional biplot. The sub...
BB - Aplikovaná statistika, operační výzkum
- 2013 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Exploratory tools for outlier detection in compositional data with structural zeros
, Mahalanobis distances are estimated, computed either directly for subcompositions of the estimates, and then proceed to the subcompositional and subgroup level......
Statistics and probability
- 2017 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Multielement geochemical modelling for pollution in the floodplains – quantifying the spatial relationship
domains were defined using advisable subcompositions. Principal component analysis patterns in the biplot as well as within the selected subcompositions in the ternary......
Environmental sciences (social aspects to be 5.7)
- 2018 •
- O
Rok uplatnění
O - Ostatní výsledky
Correlation analysis for compositional data
Compositional data need a special treatment prior to correlation analysis. In this paper we argue why standard transformations for compositional data are not suitable for computing correlations, and why the use of raw or log-transformed data is neith...
BA - Obecná matematika
- 2009 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Classical and Robust Regression Analysis with Compositional Data
coefficients and allow for testing hypotheses of subcompositional independence. Both...
Statistics and probability
- 2021 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Regression among parts of compositional data with an economic application
. For regression analysis between the response part and an explanatory subcomposition...
BB - Aplikovaná statistika, operační výzkum
- 2014 •
- D
Rok uplatnění
D - Stať ve sborníku
Moving from geochemical to contamination maps using incomplete chemical information from long-term high-density monitoring of Czech agricultural soils
concentration ratios in rational subcompositions, e.g. including Co, Cu, Pb, and Zn, were found useful to separate geogenic and lithogenic anomalies, In this subcomposition......
Environmental sciences (social aspects to be 5.7)
- 2023 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Moving from geochemical to contamination maps using incomplete chemical information from long-term high-density monitoring of Czech agricultural soils
concentration ratios in rational subcompositions, e.g. including Co, Cu, Pb, and Zn, were found useful to separate geogenic and lithogenic anomalies, In this subcomposition......
Environmental sciences (social aspects to be 5.7)
- 2023 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Regional geochemical zonation of cultivated floodplains-Application of multi-element associations for soil quality evaluation along the Ohře (Eger) River, Czech Republic
subcomposition (Cu-Hg-Ni) that were able to describe the changes of geochemical domains variability in our dataset. Mapping the Cu-Hg-Ni subcomposition using the RGB composite......
Soil science
- 2020 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Which Compounds Contribute Most to Elevated Soil Pollution and the Corresponding Health Risks in Floodplains in the Headwater Areas of the Central European Watershed?
. These results were effectively quantified with the subcomposition of benzo(a)pyrene, DDT...
Environmental sciences (social aspects to be 5.7)
- 2018 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
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