Author, as appears in the article.: Rebollo-Monedero, David; Forne, Jordi; Domingo-Ferrer, Josep
Department: Enginyeria Informàtica i Matemàtiques
URV's Author/s: Domingo Ferrer, Josep
Keywords: User collaborations Shannon entropy Search engines Query processing Profile obfuscation Probability distributions Private information retrieval Privacy via user collaboration Privacy protection Optimization variables Mathematical formulation Information theory Information provider Entropy
Abstract: We address the problem of query profile obfuscation by means of partial query exchanges between two users, in order for their profiles of interest to appear distorted to the information provider (database, search engine, etc.). We illustrate a methodology to reach mutual privacy gain, that is, a situation where both users increase their own privacy protection through collaboration in query exchange. To this end, our approach starts with a mathematical formulation, involving the modeling of the users' apparent profiles as probability distributions over categories of interest, and the measure of their privacy as the corresponding Shannon entropy. The question of which query categories to exchange translates into finding optimization variables representing exchange policies, for various optimization objectives based on those entropies, possibly under exchange traffic constraints. © 2012 IEEE.
Thematic Areas: General computer science Engenharias iv Engenharias iii Electrical and electronic engineering Computer science, software engineering Computer science, information systems Computer science, hardware & architecture Computer science (miscellaneous) Computer science (all) Ciência da computação
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: josep.domingo@urv.cat
Author identifier: 0000-0001-7213-4962
Record's date: 2024-10-12
Papper version: info:eu-repo/semantics/acceptedVersion
Link to the original source: https://ieeexplore.ieee.org/document/6138865
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Ieee Transactions On Dependable And Secure Computing. 9 (5): 641-654
APA: Rebollo-Monedero, David; Forne, Jordi; Domingo-Ferrer, Josep (2012). Query profile obfuscation by means of optimal query exchange between users. Ieee Transactions On Dependable And Secure Computing, 9(5), 641-654. DOI: 10.1109/TDSC.2012.16
Article's DOI: 10.1109/TDSC.2012.16
Entity: Universitat Rovira i Virgili
Journal publication year: 2012
Publication Type: Journal Publications
Repositori URV