dc.contributor.author Dwork, Cynthia dc.contributor.author Rothblum, Guy N. dc.contributor.author Vadhan, Salil P. dc.date.accessioned 2011-05-24T15:06:59Z dc.date.issued 2010 dc.identifier.citation Dwork, Cynthia, Guy N. Rothblum, and Salil Vadhan. 2010. Boosting and differential privacy. In Proceedings; 51st Annual IEEE Symposium on Foundations of Computer Science (FOCS), Las Vegas, Nevada, 23-26 October 2010. Los Alamitos, CA: IEEE Computer Society. en_US dc.identifier.isbn 978-1-4244-8525-3 en_US dc.identifier.issn 0272-5428 en_US dc.identifier.uri http://nrs.harvard.edu/urn-3:HUL.InstRepos:4894816 dc.description.abstract Boosting is a general method for improving the accuracy of learning algorithms. We use boosting to construct improved privacy-preserving synopses of an input database. These are data structures that yield, for a given set $Q$ of queries over an input database, reasonably accurate estimates of the responses to every query in $Q$, even when the number of queries is much larger than the number of rows in the database. Given a base synopsis generator that takes a distribution on $Q$ and produces a “weak” synopsis that yields “good” answers for a majority of the weight in $Q$, our Boosting for Queries algorithm obtains a synopsis that is good for all of $Q$. We ensure privacy for the rows of the database, but the boosting is performed on the queries. We also provide the first synopsis generators for arbitrary sets of arbitrary low- sensitivity queries, i.e., queries whose answers do not vary much under the addition or deletion of a single row. en_US In the execution of our algorithm certain tasks, each incurring some privacy loss, are performed many times. To analyze the cumulative privacy loss, we obtain an $O(\varepsilon^2)$ bound on the expected privacy loss from a single $\varepsilon$-differentially private mechanism. Combining this with evolution of confidence arguments from the literature, we get stronger bounds on the expected cumulative privacy loss due to multiple mechanisms, each of which provides $\varepsilon$-differential privacy or one of its relaxations, and each of which operates on (potentially) different, adaptively chosen, databases. dc.description.sponsorship Engineering and Applied Sciences en_US dc.language.iso en_US en_US dc.publisher IEEE Computer Society en_US dc.relation.isversionof doi:10.1109/FOCS.2010.12 en_US dc.relation.hasversion http://people.seas.harvard.edu/~salil/research/PrivateBoosting-focs.pdf en_US dash.license META_ONLY dc.title Boosting and Differential Privacy en_US dc.type Conference Paper en_US dc.description.version Version of Record en_US dash.depositing.author Vadhan, Salil P. dash.embargo.until 10000-01-01 dc.identifier.doi 10.1109/FOCS.2010.12 * dash.contributor.affiliated Vadhan, Salil
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