Zobrazit minimální záznam

dc.contributor.authorPraus, Petr
dc.date.accessioned2006-09-26T11:31:00Z
dc.date.available2006-09-26T11:31:00Z
dc.date.issued2005
dc.identifier.citationCentral European Journal of Chemistry. 2005, vol. 3, no. 4, p. 731-741.en
dc.identifier.issn1644-3624
dc.identifier.urihttp://hdl.handle.net/10084/56577
dc.description.abstractPrincipal 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 filtration of the data noise.en
dc.language.isoenen
dc.publisherVersitaen
dc.relation.ispartofseriesCentral European Journal of Chemistryen
dc.relation.urihttps://doi.org/10.2478/BF02475200en
dc.rights© 2005 Versita Warsaw. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/
dc.subjectprincipal component analysisen
dc.subjectsingular value decompositionen
dc.subjectfactor analysisen
dc.subjecthierarchical cluster analysisen
dc.subjectaltered coalsen
dc.subjectgeochemistryen
dc.titleSVD-based principal component analysis of geochemical dataen
dc.typearticleen
dc.identifier.locationNení ve fondu ÚKen
dc.identifier.doi10.2478/BF02475200
dc.rights.accessopenAccess
dc.type.versionpublishedVersion
dc.identifier.wos000232057200012


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Zobrazit minimální záznam

© 2005 Versita Warsaw. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Kromě případů, kde je uvedeno jinak, licence tohoto záznamu je © 2005 Versita Warsaw. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.