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Aspects concerning data fusion techniques

Aspekte von Techniken zur Datenfusion
[conference paper]

Rässler, Susanne
Fleischer, Karlheinz

Corporate Editor
Zentrum für Umfragen, Methoden und Analysen -ZUMA-

Abstract

Mit Techniken der Datenfusion lassen sich Datensätze aus unterschiedlichen Stichproben auf der Basis gemeinsamer Variablen mit Hilfe des statistischen Matchings verschmelzen. So entsteht eine virtuelle Stichprobe, die zwar vollständig, aber künstlich geschaffen ist. Fehlen in einer Stichprobe Inform... view more

Mit Techniken der Datenfusion lassen sich Datensätze aus unterschiedlichen Stichproben auf der Basis gemeinsamer Variablen mit Hilfe des statistischen Matchings verschmelzen. So entsteht eine virtuelle Stichprobe, die zwar vollständig, aber künstlich geschaffen ist. Fehlen in einer Stichprobe Informationen über ein Individuum, so werden sie auf der Basis der Daten eines anderen, sehr ähnlichen Individuums aus einer anderen Stichprobe abgeleitet. Die Verfasser diskutieren die Möglichkeiten der Datenfusionstechniken und stellen Parameter der Verteilung aller Variablen in der künstlichen Stichprobe auf. Von Interesse ist dabei besonders die Korrelation von nicht gemeinsam beobachteten Variablen, die nur mit Hilfe des Matchings geschätzt werden können. Simulationsstudien beschäftigen sich zudem mit den Einflüssen von nearest neighbour matches, sogenannten "Heiratsprozessen" und kleinen Stichprobenumfängen. (ICEÜbers)... view less


"Data fusion techniques merge data sets of different survey samples by means of statistical matching an the basis of common variables. As a result a virtual sample of complete, but artificial nature is generated. Because being completely unobserved, the missing information of an individual in one sa... view more

"Data fusion techniques merge data sets of different survey samples by means of statistical matching an the basis of common variables. As a result a virtual sample of complete, but artificial nature is generated. Because being completely unobserved, the missing information of an individual in one sample is imputed using the observed data values of some individual which is found to be most similar in the other sample. The power of data fusion techniques is analysed and the parameters of the distributions of all variables in the artificial sample are formulated. The correlation between variables not jointly observed, which can only be estimated by means of the matched file, is of main interest herein. Furthermore the influences of nearest neighbour matches, several so-called marriage processes, and small sample sizes are the focus of simulation studies." (author's abstract)... view less

Keywords
sample; sampling error; mathematical method; correlation; matching; simulation

Classification
Methods and Techniques of Data Collection and Data Analysis, Statistical Methods, Computer Methods

Method
basic research; development of methods

Free Keywords
missing information; imputation; merging data sets; statistical matching

Collection Title
Nonresponse in survey research : proceedings of the Eighth International Workshop on Household Survey Nonresponse, 24-16 September 1997

Editor
Koch, Achim; Porst, Rolf

Conference
8. International Workshop on Household Survey Nonresponse. Mannheim, 1997

Document language
English

Publication Year
1998

City
Mannheim

Page/Pages
p. 317-333

Series
ZUMA-Nachrichten Spezial, 4

ISBN
3-924220-15-8

Status
Published Version; reviewed

Licence
Deposit Licence - No Redistribution, No Modifications


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© 2007 - 2025 Social Science Open Access Repository (SSOAR).
Based on DSpace, Copyright (c) 2002-2022, DuraSpace. All rights reserved.