Anzeige
Erschienen in:
2010 | OriginalPaper | Buchkapitel
Eliminating Small Cells from Census Counts Tables: Some Considerations on Transition Probabilities
verfasst von : Sarah Giessing, Jörg Höhne
Erschienen in: Privacy in Statistical Databases
Verlag: Springer Berlin Heidelberg
Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
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 micro-data set has been protected by this method, any table which can be computed on the basis of this micro-data 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 micro-data key based post-tabular random perturbation methods suggested in the literature, e.g. [8] and [4].