Title
Privacy Enhanced Recommender System
Author
TNO Informatie- en Communicatietechnologie
Erkin, Z.
Beye, M.
Veugen, P.J.M.
Lagendijk, R.L.
Publication year
2010
Abstract
Recommender systems are widely used in online applications since they enable personalized service to the users. The underlying collaborative filtering techniques work on user’s data which are mostly privacy sensitive and can be misused by the service provider. To protect the privacy of the users, we propose to encrypt the privacy sensitive data and generate recommendations by processing them under encryption. With this approach, the service provider learns no information on any user’s preferences or the recommendations made. The proposed method is based on homomorphic encryption schemes and secure multiparty computation (MPC) techniques. The overhead of working in the encrypted domain is minimized by packing data as shown in the complexity analysis.
Subject
Recommender systems
User privacy
Secure multiparty computation
Homomorphic encryption
Data packing
To reference this document use:
http://resolver.tudelft.nl/uuid:fad9d443-f686-41fc-8ba7-85f3f1ed58b1
TNO identifier
463800
Source
Thirty-first Symposium on Information Theory in the Benelux, May 11–12, 2010, Rotterdam, The Netherlands, 35-42
Document type
conference paper