Discussion: Data Protection Call for a European Guideline on Thresholds (Rules of Confidentiality / Disclosure Control / Number Suppression / …) Ingrid Kaminger Kartographie und GIS STATISTIK AUSTRIA Guglgasse Wien Tel : ++43 / Fax : ++43 /
Data Protection necessary to avoid misuse fundamental right of each person regulation, law -> Aim: common guideline to allow cross border projects
Various Solutions (1) Manipulating data (Sweden) Just classes – no numbers (Switzerland) Suppressing numbers (Austria, Denmark, Finnland, Norway, Slovenia) -> Problem: numbers do not sum up to actual totals
Austria and Slovenia
Various Solutions (2) Aggregation with neighbouring cells Hierarchical Aggregation Individual Clustering Spatial Disaggregation -> Sums are correct, but loss in detail
Hierarchical Aggregation
Current Thresholds 2006
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