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Fundamental Abstractions
Query space, Q, with partial ordering:
- Elements can be marginal tables, conditionals, k-groupings, regressions, or other data summaries.
- Released set: R(t), and implied Unreleasable set: U(t).
- Releasable frontier: maximal elements of R(t).
- Unreleasable frontier: minimal elements of U(t).
Risk and Utility defined on subsets of Q.
- Risk Measure: identifiability of small cell counts.
- Utility: reconstructing table using log-linear models.
- Release rules must balance risk and utility:
- R-U Confidentiality map.
- General Bayesian decision-theoretic approach.
Notes: