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Comparing Ways of Using ‘Protection Flow’ to Protect Magnitude Data Tables from Disclosures

Paul B. Massell
Component ID: #ti1485096247


We use the term ‘protection flow’ to describe any solution to a mathematical programming model that describes perturbations (i.e., modifications) of table cell values that preserve table additivity. This term is meant to generalize ‘network flow’. Network flow models have been used to describe such perturbations for simple two dimensional tables. Protection flow models can be constructed for tables of any dimension and any degree of hierarchy. Cell suppression is one way of using the protection flow to construct a table with sufficient protection for the sensitive cells. We compare cell suppression with some new ways (e.g., controlled tabular adjustment, variable base rounding, uncertainty intervals) of using the perturbations to provide disclosure protection.

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