Now showing items 1-20 of 29

  • A collaborative protocol for anonymous reporting in vehicular ad hoc networks 

    Tripp Barba, Carolina; Urquiza Aguiar, Luis; Aguilar Igartua, Mónica; Parra Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge; Pallarès Segarra, Esteve (Elsevier, 2013-11-01)
    Article
    Restricted access - publisher's policy
    Vehicular ad hoc networks (VANETs) have emerged to leverage the power of modern communication technologies, applied to both vehicles and infrastructure. Allowing drivers to report traffic accidents and violations through ...
  • A Collaborative Protocol for Private Retrieval of Location-Based Information 

    Rebollo Monedero, David; Forné Muñoz, Jorge; Subirats Maté, Laia; Solanas, Agustí; Martínez-Ballasté, Antoni (IADIS Press, 2009)
    Conference lecture
    Open Access
    Privacy and security are paramount for 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. ...
  • A multimetric, map-aware routing protocol for VANETs in urban areas 

    Tripp Barba, Carolina; Urquiza Aguiar, Luis; Aguilar Igartua, Mónica; Rebollo Monedero, David; Cruz Llopis, Luis Javier de la; Mezher, Ahmad; Aguilar-Calderón, José Alfonso (2014-01-28)
    Article
    Open Access
    In recent years, the general interest in routing for vehicular ad hoc networks (VANETs) has increased notably. Many proposals have been presented to improve the behavior of the routing decisions in these very changeable ...
  • A privacy-preserving architecture for the semantic web based on tag suppression 

    Parra Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge (Springer, 2010)
    Conference report
    Restricted access - publisher's policy
    We propose an architecture that preserves user privacy in the semantic Web via tag suppression. In tag suppression, users may wish to tag some resources and refrain from tagging some others in order to hinder privacy ...
  • A Privacy-Preserving Architecture for the Semantic Web Based on Tag Suppression 

    Parra, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge (2010-09)
    Article
    Restricted access - publisher's policy
    We propose an architecture that preserves user privacy in the semantic Web via tag suppression. In tag suppression, users may wish to tag some resources and refrain from tagging some others in order to hinder privacy ...
  • A privacy-protecting architecture for collaborative filtering via forgery and suppression of ratings 

    Parra Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge (2012)
    Article
    Restricted access - publisher's policy
    Recommendation systems are information-filtering systems that help users deal with information overload. Unfortunately, current recommendation systems prompt serious privacy concerns. In this work, we propose an architecture ...
  • A privacy-protecting architecture for collaborative filtering via forgery and suppression of ratings 

    Parra Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge (Springer, 2011)
    Conference report
    Restricted access - publisher's policy
    Recommendation systems are information-filtering systems that help users deal with information overload. Unfortunately, current recommendation systems prompt serious privacy concerns. In this work, we propose an architecture ...
  • A privacy-protecting architecture for recommendation systems via the suppression of ratings 

    Parra Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge (2012-04)
    Article
    Restricted access - publisher's policy
    Recommendation systems are information-filtering systems that help users deal with information overload. Unfortunately, current recommendation systems prompt serious privacy concerns. In this work, we propose an architecture ...
  • Categorization of bibsonomy tags to apply privacy-preserving mechanisms. 

    Parra Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge (2012-07-24)
    Other
    Open Access
    In this technical report, we approach one of the practical aspects when it comes to represent users' interests from their tagging activity, namely the categorization of tags into high-level categories of interest. The ...
  • ¿Cómo medir la privacidad? 

    Forné Muñoz, Jorge; Rebollo Monedero, David (2009-11)
    Article
    Open Access
    En el presente estudio revisamos el estado del arte sobre métricas de privacidad en métodos con perturbación para el control estadístico de revelación. Aunque el artículo se enfoca en microagregación de datos, dichos métodos ...
  • From t-closeness-like privacy to postrandomization via information theory 

    Rebollo Monedero, David; Forné Muñoz, Jorge; Domingo Ferrer, Josep (2010)
    Article
    Restricted access - publisher's policy
    t-Closeness is a privacy model recently defined for data anonymization. A data set is said to satisfy t-closeness if, for each group of records sharing a combination of key attributes, the distance between the distribution ...
  • From t-closeness-like privacy to postrandomization via information theory 

    Rebollo Monedero, David; Forné Muñoz, Jorge; Domingo Ferrer, Josep (2009-10-08)
    Article
    Open Access
    t-Closeness is a privacy model recently defined for data anonymization. A data set is said to satisfy t-closeness if, for each group of records sharing a combination of key attributes, the distance between the distribution ...
  • Hierarchical categorisation of tags for delicious 

    Parra Arnau, Javier; Perego, Andrea; Ferrari, Elena; Forné Muñoz, Jorge; Rebollo Monedero, David (2012)
    Other
    Open Access
    In the scenario of social bookmarking, a user browsing the Web bookmarks web pages and assigns free-text labels (i.e., tags) to them according to their personal preferences. In this technical report, we approach one of ...
  • Hierarchical categorisation of web tags for Delicious 

    Parra Arnau, Javier; Perego, Andrea; Ferrari, Elena; Forné Muñoz, Jorge; Rebollo Monedero, David (2011-11-11)
    External research report
    Open Access
    In the scenario of social bookmarking, a user browsing the Web bookmarks web pages and assigns free-text labels (i.e., tags) to them according to their personal preferences. The benefits of social tagging are clear – tags ...
  • How do we measure privacy? 

    Rebollo Monedero, David; Forné Muñoz, Jorge (2010)
    Article
    Open Access
    We survey the state of the art of privacy in perturbative methods for statistical disclosure control. While the focus is on data microaggregation, these methods also address a wide variety of alternative applications such ...
  • 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
    Restricted access - publisher's policy
    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 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 ...
  • 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 ...