Book page

Public sources on related activities outside the project

Elena GAUTHIER
Elena GAUTHIER • 22 January 2025

Paper by the Australian Bureau of Statistics (ABS) at the 2013 Work Session on Statistical Data Confidentiality:  Methodology for the Automatic Confdentialisation of Statistical Outputs from Remote Servers at the Australian, Gwenda Thompson, Stephen Broadfoot, Daniel Elazar.

The ABS paper describes from page 10 a way to deal with weights (this is, a generalisation from the original census context to application in sample surveys).

Eurostat produced the following SAS code for the conversion of unique record identifiers into pseudo-random record keys:

format rkey best32.; /* cell key: define rkey format */

hash_hex = put(md5(COUNTRY||YEAR||QUARTER||HHNUM||HHSEQNUM), hex32.); /* cell key: first compute MD5 hash */

hash_int = input(hash_hex, IB4.); /*  cell key: convert to int (IB8. not accepted by RANUNI) */

call ranuni(hash_int, rkey); /* cell key: then compute actual rkey in [0, 1] */