A Nearly Instance-optimal Differentially Private Mechanism for Conjunctive Queries
Wei Dong, Ke Yi
Abstract
Releasing the result size of conjunctive queries and graph pattern queries under differential privacy (DP) has received considerable attention in the literature, but existing solutions do not offer any optimality guarantees. We provide the first DP mechanism for this problem with a fairly strong notion of optimality, which can be considered as a natural relaxation of instance-optimality to a constant.
Topics & Concepts
Differential privacyConjunctive queryComputer scienceConstant (computer programming)GraphTheoretical computer scienceRelaxation (psychology)Mechanism (biology)Data miningRelational databaseProgramming languagePsychologySocial psychologyPhilosophyEpistemologyPrivacy-Preserving Technologies in DataCryptography and Data SecurityMobile Crowdsensing and Crowdsourcing