Privacy Aware Learning
  We study statistical risk minimization problems under a privacy model in which the data is kept confidential even from the learner. In this local privacy framework, we establish sharp upper and lower bounds on the convergence rates of statistical estimation procedures. As a consequence, we exhibit a precise tradeoff between the amount of privacy the data preserves and the utility, as measured by convergence rate, of any statistical estimator or learning procedure. 
John C. Duchi and Michael I. Jordan and Martin J. Wainwright
stat.ML cs.IT cs.LG math.IT