Optimal adjustments for inconsistency in imputed data

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Jeroen Pannekoek and Li-Chun Zhang^Note 1

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Abstract

Imputed micro data often contain conflicting information. The situation may e.g., arise from partial imputation, where one part of the imputed record consists of the observed values of the original record and the other the imputed values. Edit-rules that involve variables from both parts of the record will often be violated. Or, inconsistency may be caused by adjustment for errors in the observed data, also referred to as imputation in Editing. Under the assumption that the remaining inconsistency is not due to systematic errors, we propose to make adjustments to the micro data such that all constraints are simultaneously satisfied and the adjustments are minimal according to a chosen distance metric. Different approaches to the distance metric are considered, as well as several extensions of the basic situation, including the treatment of categorical data, unit imputation and macro-level benchmarking. The properties and interpretations of the proposed methods are illustrated using business-economic data.

Key Words: Edit-rules; Consistent micro-data; Optimization; Benchmarking.

Table of content

• 1. Introduction
• 2. The minimum adjustment approach
• 3. On possible extensions to related adjustment problems
• 4. Case study
• 5. Summary
• Acknowledgements
• References

Notes