An S4 class for differentially-private mechanisms.

A base class for representing output-perturbing mechanisms in differential privacy. As this class is VIRTUAL it cannot be instantiated, but it can be subclassed.

Slots

sensitivity

non-negative scalar numeric target sensitivity. Defaults to Inf for use with sensitivitySampler().

target

the target non-private function to be privatized, takes lists. Defaults to a constant function.

gammaSensitivity

NA_real_ if inactive, or scalar in [0,1) indicating that responses must be RDP with specific confidence.

References

Cynthia Dwork, Frank McSherry, Kobbi Nissim, and Adam Smith. "Calibrating noise to sensitivity in private data analysis." In Theory of Cryptography Conference, pp. 265-284. Springer Berlin Heidelberg, 2006.

See also

DPMechLaplace subclass for the Laplace mechanism.