Measuring Research Intensity from Anonymized Data: Does Multiplicative Noise with Factor Structure Save Results Regarding Quotients?
AbstractEconomic researchers often consider quotients like R&D investment divided by sales which could be used to measure “research intensity” of firms if available. However, data on research in particular are highly confidential and would not be released in original form. Therefore scientific use files have to be generated from anonymized micro data. The paper considers joint anonymization of all variables by multiplicative noise which stems from a bimodal mixture distribution and can be regarded as an error model with factor structure. It is shown that quotients such as research intensity are not modified considerably by this procedure. However, already quotients from original data can give quite misleading results which is illustrated by simulation results and an empirical example using the German Cost Structure Survey.
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Bibliographic InfoArticle provided by Justus-Liebig University Giessen, Department of Statistics and Economics in its journal Journal of Economics and Statistics.
Volume (Year): 228 (2008)
Issue (Month): 5+6 (December)
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Data masking; measurement error; mixture distribution; R&D;
Find related papers by JEL classification:
- C10 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - General
- C43 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods: Special Topics - - - Index Numbers and Aggregation
- C81 - Mathematical and Quantitative Methods - - Data Collection and Data Estimation Methodology; Computer Programs - - - Methodology for Collecting, Estimating, and Organizing Microeconomic Data; Data Access
- O30 - Economic Development, Technological Change, and Growth - - Technological Change; Research and Development; Intellectual Property Rights - - - General
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- Gottschalk, Sandra, 2002. "Anonymisierung von Unternehmensdaten: Ein Überblick und beispielhafte Darstellung anhand des Mannheimer Innovationspanels," ZEW Discussion Papers 02-23, ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research.
- Gerd Ronning, 2014. "Vertraulichkeit und Verfügbarkeit von Mikrodaten," IAW Discussion Papers 101, Institut für Angewandte Wirtschaftsforschung (IAW).
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