Lee, Seokho; Genton, Marc G.; Arellano-Valle, Reinaldo B. - In: Management Science 56 (2010) 2, pp. 318-333
We propose a new data perturbation method for numerical database security problems based on skew-t distributions … database managers. We also discuss how to preserve the sample mean vector and sample covariance matrix exactly for any data … the joint tails of the distribution in order for database users to answer higher-level questions. We apply the STDP method …