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Revision with unchanged content. The estimation of the plausibility of a set of observations basically depends on the main structure which stands behind these data. Observations which fit into this estimated structure seem more plausible, than observations with large distance to such structure estimates. For representing the structure of a data set, here principal components are used. Since single observations which do not follow the main structure of a data set (outliers) should not influence such estimations, robust methods are considered primarily in this context. The estimation of missing values is based on principal component analysis as well. Iteratively principal components are estimated, and observations are projected onto them until convergence of this process. In this context existing algorithms have been improved concerning the quality of imputation and runtime behavior. In particular this improvement focuses on the projection methods which are used to project observations containing missings onto principal components.
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Über die Autorin bzw. den Autor
Heinrich Fritz: 2003-2007 Computer science studies at the Vienna University of Technology.Graduated 2006 in Data Engineeringand Statistics, 2007 in Business Engineering and Computer Science as well as Computer Science Management.Peter Filzmoser: studied Applied Mathematics at the ViennaUniversity of Technology, where he also wrote hisdoctoral thesis and habilitation. His research is in the field ofmultivariate and robust statistics.
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Plausibility of Databases
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Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Revision with unchanged content. The estimation of the plausibility of a set of observations basically depends on the main structure which stands behind these data. Observations which fit into this estimated structure seem more plausible, than observations with large distance to such structure estimates. For representing the structure of a data set, here principal components are used. Since single observations which do not follow the main structure of a data set (outliers) should not influence such estimations, robust methods are considered primarily in this context. The estimation of missing values is based on principal component analysis as well. Iteratively principal components are estimated, and observations are projected onto them until convergence of this process. In this context existing algorithms have been improved concerning the quality of imputation and runtime behavior. In particular this improvement focuses on the projection methods which are used to project observations containing missings onto principal components. 96 pp. Englisch. Bestandsnummer des Verkäufers 9783639435788
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Zustand: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Fritz HeinrichHeinrich Fritz: 2003-2007 Computer science studies at the Vienna University of Technology.Graduated 2006 in Data Engineeringand Statistics, 2007 in Business Engineering and Computer Science as well as Computer Science M. Bestandsnummer des Verkäufers 4987785
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AV Akademikerverlag Jul 2012, 2012
ISBN 10: 3639435788
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Taschenbuch. Zustand: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Revision with unchanged content. The estimation of the plausibility of a set of observations basically depends on the main structure which stands behind these data. Observations which fit into this estimated structure seem more plausible, than observations with large distance to such structure estimates. For representing the structure of a data set, here principal components are used. Since single observations which do not follow the main structure of a data set (outliers) should not influence such estimations, robust methods are considered primarily in this context. The estimation of missing values is based on principal component analysis as well. Iteratively principal components are estimated, and observations are projected onto them until convergence of this process. In this context existing algorithms have been improved concerning the quality of imputation and runtime behavior. In particular this improvement focuses on the projection methods which are used to project observations containing missings onto principal components.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 96 pp. Englisch. Bestandsnummer des Verkäufers 9783639435788
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