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P. Kooiman | Leon Willenborg | José Gouweleeuw PRAM: a method for disclosure limitation of microdata
This paper describes the Post Randomisation Method (PRAM) as a method for disclosure protection of microdata. PRAM means that for each record in the data file according to a specified probability mechanism the score on a number of variables is changed. Since this probability mechanism is known, the characteristics of the latent true data can unbiasedly be estimated from the observed data moments in the perturbed file. In this paper, PRAM is applied to categorical variables. It is shown that both...
Non-fictie
Engels | 19 pagina's | CBS, Voorburg | 1997
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