Patent attributes
A system for answering sets of queries on a set of private data while providing differential privacy protection is provided. The set of queries is received and applied to the set of private data to generate a set of results or answers. A geometric representation of the set of queries is generated. Example geometric representations include polytopes. Error values are generated for the set of queries using a K-norm mechanism based on values sampled from the geometric representation. The sampled values are added to the set of results to provide the differential privacy protection. By generating the error values based on the set of queries rather than the set of results or the set of private data, the amount of error added to the generated results to achieve a level of differential privacy protection is reduced.
