| Title: | Method for statistical disclosure limitation |
| Patent No.: | 7058638 |
| Type: | Patent |
| Date: | 2006 |
| Authors: | Singh, A.C. |
| Abstract: | A method and system for ensuring statistical disclosure
limitation (SDL) of categorical or continuous micro data, while
maintaining the analytical quality of the micro data. The new SDL
methodology exploits the analogy between (1) taking a sample
(instead of a census,) along with some adjustments, including
imputation, for missing information, and (2) releasing a subset,
instead of the original data set, along with some adjustments for
records still at disclosure risk. Survey sampling reduces monetary
cost in comparison to a census, but entails some loss of
information. Similarly, releasing a subset reduces disclosure cost
in comparison to the full database, but entails some loss of
information. Thus, optimal survey sampling methods can be used for
statistical disclosure limitation. The method includes partitioning
the database into risk strata, optimal probabilistic substitution,
optimal probabilistic subsampling, and optimal sampling weight
calibration. |
| Online Resources: | Patent Details (US PTO) |
| Full Citation: | Singh, A.C. (2006). Method for statistical disclosure limitation. U.S. Patent No. 7,058,638. Washington, D.C.: U.S. Patent and Trademark Office |
