Abstract #301815

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JSM 2003 Abstract #301815
Activity Number: 438
Type: Topic Contributed
Date/Time: Thursday, August 7, 2003 : 8:30 AM to 10:20 AM
Sponsor: Section on Government Statistics
Abstract - #301815
Title: Statistical Utility of Disclosure Limited Releases of Cross-tabulated Data
Author(s): Ashish P. Sanil*+
Companies: National Institute of Statistical Science
Address: 208 Pinegate Cir. Apt. 3, Chapel Hill, NC, 27514-2261,
Keywords:
Abstract:

Statistical agencies as well as private organizations disseminate immense amounts of tabular information derived from confidential microdata. Protecting this confidentiality while releasing as much useful information as possible presents major challenges. Over the years, a number of procedures have been devised that allow disclosure-protected dissemination of tabular data. These methods employ various well-established criteria to ascertain risk, and also various ways of measuring utility of the release based on information loss. We propose a new approach to measure the utlity of a released table (or a set of tables) based on the notion of "statistical usefulness" of the data to the end user who is interested in statistical analyses of the data (i.e., understanding the structure of associations among attributes of the dataset). We illustrate this approach with examples based on cross-tabulated tables of counts.

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