Now showing items 21-40 of 43

  • Incremental k-Anonymous microaggregation in large-scale electronic surveys with optimized scheduling 

    Rebollo Monedero, David; Forné Muñoz, Jorge; Soriano Ibáñez, Miguel; Hernández Baigorri, César (Institute of Electrical and Electronics Engineers (IEEE), 2018-10-15)
    Article
    Open Access
    Improvements in technology have led to enormous volumes of detailed personal information made available for any number of statistical studies. This has stimulated the need for anonymization techniques striving to attain a ...
  • k-anonymous microaggregation with preservation of statistical dependence 

    Rebollo Monedero, David; Forné Muñoz, Jorge; Soriano Ibáñez, Miguel (2016-05-10)
    Article
    Open Access
    𝑘�������-Anonymous microaggregation emerges as an essential building block in statistical disclosure control, a field concerning the postprocessing of the demographic portion of surveys containing sensitive information, ...
  • Measuring the privacy of user profiles in personalized information systems 

    Parra Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge (Elsevier, 2014-04-01)
    Article
    Restricted access - publisher's policy
    Personalized information systems are information-filtering systems that endeavor to tailor information-exchange functionality to the specific interests of their users. The ability of these systems to profile users is, on ...
  • Medición de la privacidad de perfiles de usuario mediante un add-on de navegador 

    Estrada, Jose; Rodríguez, Ana; Parra Arnau, Javier; Forné Muñoz, Jorge; Rebollo Monedero, David (2013)
    Conference lecture
    Restricted access - publisher's policy
    Actualmente, la monitorización de los usuarios en Internet es permanente, y la información obtenida en este proceso es de enorme interés para grandes compañías de publicidad e incluso gobiernos. Además, la gran cantidad ...
  • On content-based recommendation and user privacy in social-tagging systems 

    Puglisi, Silvia; Parra-Arnau, Javier; Forné Muñoz, Jorge; Rebollo Monedero, David (Elsevier, 2015-09-01)
    Article
    Open Access
    Recommendation systems and content filtering approaches based on annotations and ratings, essentially rely on users expressing their preferences and interests through their actions, in order to provide personalised content. ...
  • On the anonymity risk of time-varying user profiles. 

    Puglisi, Silvia; Rebollo Monedero, David; Forné Muñoz, Jorge (2017-04-26)
    Article
    Open Access
    Websites and applications use personalisation services to profile their users, collect their patterns and activities and eventually use this data to provide tailored suggestions. User preferences and social interactions ...
  • On the measurement of privacy as an attacker's estimation error 

    Rebollo Monedero, David; Parra Arnau, Javier; Diaz, Claudia; Forné Muñoz, Jorge (2012)
    Article
    Open Access
    A wide variety of privacy metrics have been proposed in the literature to evaluate the level of protection offered by privacy enhancing-technologies. Most of these metrics are specific to concrete systems and adversarial ...
  • On Web user tracking: how third-party http requests track users' browsing patterns for personalised advertising 

    Puglisi, Silvia; Rebollo Monedero, David; Forné Muñoz, Jorge (2016)
    Conference report
    Open Access
    On today's Web, users trade access to their private data for content and services. Advertising sustains the business model of many websites and applications. Efficient and successful advertising relies on predicting ...
  • On web user tracking of browsing patterns for personalised advertising 

    Puglisi, Silvia; Rebollo Monedero, David; Forné Muñoz, Jorge (2017-02-19)
    Article
    Open Access
    On today’s Web, users trade access to their private data for content and services. App and service providers want to know everything they can about their users, in order to improve their product experience. Also, advertising ...
  • Optimal forgery and suppression of ratings for privacy enhancement in recommendation systems 

    Parra-Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge (2014-03)
    Article
    Open Access
    Recommendation systems are information-filtering systems that tailor information to users on the basis of knowledge about their preferences. The ability of these systems to profile users is what enables such intelligent ...
  • Optimized query forgery for private information retrieval 

    Rebollo Monedero, David; Forné Muñoz, Jorge (2010-09)
    Article
    Open Access
    We present a mathematical formulation for the optimization of query forgery for private information retrieval, in the sense that the privacy risk is minimized for a given traffic and processing overhead. The privacy ...
  • Optimizing the design parameters of threshold pool mixes for anonymity and delay 

    Rebollo Monedero, David; Parra Arnau, Javier; Forné Muñoz, Jorge; Díaz Martínez, María Claudia (2014-07-04)
    Article
    Restricted access - publisher's policy
    The provision of content confidentiality via message encryption is by no means sufficient when facing the significant privacy risks present in online communications. Indeed, the privacy literature abounds with examples of ...
  • Potential mass surveillance and privacy violations in proximity-based social applications 

    Puglisi, Silvia; Rebollo Monedero, David; Forné Muñoz, Jorge (IEEE Press, 2016)
    Conference lecture
    Open Access
    Proximity-based social applications let users interact with people that are currently close to them, by revealing some information about their preferences and whereabouts. This information is acquired through passive ...
  • p-probabilistic k-anonymous microaggregation for the anonymization of surveys with uncertain participation 

    Rebollo Monedero, David; Forné Muñoz, Jorge; Soriano Ibáñez, Miguel; Puiggalí Allepuz, Jordi (2016-12-13)
    Article
    Open Access
    We develop a probabilistic variant of k-anonymous microaggregation which we term p-probabilistic resorting to a statistical model of respondent participation in order to aggregate quasi-identifiers in such a manner that ...
  • Privacy-preserving enhanced collaborative tagging 

    Parra Arnau, Javier; Perego, Andrea; Ferrari, Elena; Forné Muñoz, Jorge; Rebollo Monedero, David (2014-01-01)
    Article
    Restricted access - publisher's policy
    Collaborative tagging is one of the most popular services available online, and it allows end user to loosely classify either online or offline resources based on their feedback, expressed in the form of free-text labels ...
  • Privacy protection of user profiles in personalized information systems 

    Parra Arnau, Javier; Forné Muñoz, Jorge; Rebollo Monedero, David (2012)
    Conference report
    Open Access
  • Private location-based information retrieval through user collaboration 

    Rebollo Monedero, David; Forné Muñoz, Jorge; Solanas, Agusti; Martinez-Balleste, Antoni (2010)
    Article
    Open Access
    Privacy and security are paramount in the proper deployment of location-based services (LBSs). We present a novel protocol based on user collaboration to privately retrieve location-based information from an LBS provider. ...
  • Private location-based information retrieval through user collaboration 

    Rebollo Monedero, David; Forné Muñoz, Jorge; Solanas, Agusti; Martínez-Ballesté, Antoni (2009-12-05)
    Article
    Restricted access - publisher's policy
    Privacy and security are paramount in the proper deployment of location-based services (LBSs). We present a novel protocol based on user collaboration to privately retrieve location-based information from an LBS provider. ...
  • Query profile obfuscation by means of optimal query exchange between users 

    Rebollo Monedero, David; Forné Muñoz, Jorge; Domingo Ferrer, Josep (IEEE Computer Society Publications, 2012-09)
    Article
    Restricted access - publisher's policy
    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 ...
  • Reconciling privacy and efficient utility management in smart cities 

    Rebollo Monedero, David; Bartoli, Andrea; Hernández Serrano, Juan; Forné Muñoz, Jorge; Soriano Ibáñez, Miguel (2014-01-01)
    Article
    Restricted access - publisher's policy
    A key aspect in the design of smart cities is, undoubtedly, a plan for the efficient management of utilities, enabled by technologies such as those entailing smart metering of the residential consumption of electricity, ...