When to say NO to protect Privacy when answering Queries

by prof. Christoph Freytag, Berlin Humboldt-Universit├Ąt

October 8th 2013 @ 14:00, in Serraia

In this invited talk prof. Christoph Freytag will present his work about

When to say NO to protect Privacy when answering Queries

Abstract:

This talk presents privacy concepts that keep the balance between utility and privacy when returning answers to a sequence of queries. In particular we show how to model the (increasing) knowledge of an adversary resulting from the answers to queries by a sequence of bipartite graphs. Those provide the foundation for deciding when a privacy breach occurs (might occur) and how to balance the need for accurate responses versus the right for privacy. Examples demonstrate the intricacies of managing this trade-off.

Speaker:

Johann-Christoph Freytag is currently full professor for Databases and Information Systems (DBIS) at the Computer Science Department of the Humboldt-Universit├Ąt zu Berlin, Germany.

Before joining the department in 1994, he was a research staff member at the IBM Almaden Research Center (1985-1987), a researcher at the European Computer-Industry-Research Centre (ECRC, in Munich, Germany, 1987-1989), and the head of Digital's Database Technology Center (also in Munich, 1990-1993). He holds a Ph.D. in Applied Mathematics/Computer Science from Harvard University, MA.