A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is
Lecture Notes in Computer Science
We propose a new mechanism to preserve privacy while leveraging user profiles in distributed recommender systems. Our mechanism relies on (i) an original obfuscation scheme to hide the exact profiles of users without significantly decreasing their utility, as well as on (ii) a randomized dissemination protocol ensuring differential privacy during the dissemination process. We compare our mechanism with a non-private as well as with a fully private alternative. We consider a real dataset from adoi:10.1007/978-3-319-09581-3_12 fatcat:jgyaqld3hzhfho7szbpn3okaea