×

Method for statistical disclosure limitation

  • US 7,058,638 B2
  • Filed: 09/03/2002
  • Issued: 06/06/2006
  • Est. Priority Date: 09/03/2002
  • Status: Active Grant
First Claim
Patent Images

1. A computer-implemented method of processing an original database comprising a plurality of records, comprising:

  • partitioning the plurality of records into a plurality of risk strata based on a plurality of identifying variables, wherein each risk stratum includes at least one record; and

    modifying the plurality of records based on the plurality of risk strata to create a disclosure-limited data file,wherein the partitioning step comprises;

    determining a core risk stratum comprising those records in the plurality of records that have unique data values for identifying variables in a core subset of the plurality of identifying variables; and

    determining a further risk stratum comprising those records in the plurality of records that have unique data values for identifying variables in a selected subset of the plurality of identifying variables, the selected subset including each identifying variable in the core subset and at least one identifying variable not in the core subset.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×