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A flexible approach for statistical disclosure control in geospatial data

Author

Listed:
  • Jon Olav Skøien

    (ARHS Developments)

  • Nicolas Lampach

    (European Commission, Eurostat
    University of Natural Resources and Life Sciences)

  • Helena Ramos

    (European Commission, Eurostat)

  • Rudolf Seljak

    (European Commission, Eurostat)

  • Renate Koeble

    (ARHS Developments)

  • Linda See

    (International Institute for Applied Systems Analysis (IIASA))

  • Marijn van der Velde

    (European Commission, Joint Research Centre)

Abstract

Due to confidentiality restrictions in releasing census and survey data, such as agricultural data from the European farm structure survey (9 million records), the data are aggregated to a coarse resolution (NUTS2 administrative regions) before public release. Even when other types of census data are released as grids, grid cells may be suppressed in locations where confidentiality rules have not been respected. Here, we present a method, implemented in the R package MRG, for creating multi-resolution grids that respect restrictions while maximizing the spatial resolution at which the data are disseminated. The method can be adjusted for different restrictions, it can create the same grid structure for a set of variables, and it allows for a contextual suppression of some grid cells (i.e., suppress if all neighbors are non-confidential, merge if several others are also confidential) if this results in a generally higher information content, a combination of features that has not previously been available. The method is exemplified with a synthetic data set.

Suggested Citation

  • Jon Olav Skøien & Nicolas Lampach & Helena Ramos & Rudolf Seljak & Renate Koeble & Linda See & Marijn van der Velde, 2025. "A flexible approach for statistical disclosure control in geospatial data," Journal of Geographical Systems, Springer, vol. 27(3), pages 341-367, July.
    • Handle: RePEc:kap:jgeosy:v:27:y:2025:i:3:d:10.1007_s10109-025-00472-5
    DOI: 10.1007/s10109-025-00472-5
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