97848 articleid 16962281vSpecialp59 eng Giessing, Sarah Eliminating small cells from census counts tables : empirical vs. design transition probabilities The software SAFE has been developed at the State Statistical Institute Berlin-Brandenburg and has been in regular use there for several years now. It involves an algorithm that yields a controlled cell frequency perturbation. When a microdata set has been protected by this method, any table which can be computed on the basis of this microdata set will not contain any small cells, e.g. cells with frequency counts 1 or 2. We compare empirically observed transition probabilities resulting from this pre-tabular method to transition matrices in the context of variants of microdata key based post-tabular random perturbation methods suggested in the literature, e.g. Shlomo, N., Young, C. (2008) and Fraser, B.,Wooton, J. (2006). Tots els drets reservats http://www.europeana.eu/rights/rr-f/ Anglès Article de fons Tabular data protection Census Frequency Tables SAFE Post-tabular protection methods info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Höhne, Jörg Vol. Special, Núm. (2011), p. 59-76 SORT : statistics and operations research transactions 1696-2281 18 149851 http://ddd.uab.cat/uab/sort/sort_a2011vSPECIAL/sort_a2011nSPECIALp59.pdf 0059 76 Special sort_a2011vSPECIAL 2011 ARTPUB SORT UAB artpubuab oai:ddd.uab.cat:97848 driver