SVD-Based Principal Component Analysis of Geochemical Data

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F05%3A00012968" target="_blank" >RIV/61989100:27360/05:00012968 - isvavai.cz</a>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

SVD-Based Principal Component Analysis of Geochemical Data

Original language description

Principal Component Analysis (PCA) was used for the mapping of geochemical data. A testing data matrix was prepared from the chemical and physical analyses of the coals altered by thermal and oxidation effects. PCA based on Singular Value Decomposition (SVD) of the standardized (centered and scaled by the standard deviation) data matrix revealed three principal components explaining 85.2 % of the variance. Combining the scatter and components weights plots with knowledge of the composition of tested samples, the coal samples were divided into seven groups depending on the degree of their oxidation and thermal alteration.The PCA findings were verified by other multivariate methods. The relationships among geochemical variables were successfully confirmed by Factor Analysis (FA). The data structure was also described by the Average Group dendrogram using Euclidean distance. The found sample clusters were not defined so clearly as in the case of PCA. It can be explained by the PCA filtrat

Czech name

Analýza hlavních komponent geochemický dat založená na SVD

Czech description

Vzorky alterovaných uhlí byly hodnoceny metodou hlavních komponent s použitím algoritmu SVD. Pomocí nalezených hlavních komponent byly vzorky rozděleny do skupin podle jejich geochemického složení. Výsledky tohoto dělení byly porovnány s výsledky hierarchické klastrovací analýzy. Interpretace nalezených hlavních komponent byla provedena pomocí faktorové analýzy.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CB - Analytical chemistry, separation

OECD FORD branch

—

Project

—

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2005

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Central European Journal of Chemistry

ISSN

0364-5916

e-ISSN

—

Volume of the periodical

4

Issue of the periodical within the volume

3

Country of publishing house

PL - POLAND

Number of pages

11

Pages from-to

731-741

UT code for WoS article

—

EID of the result in the Scopus database

—