Ara es mostren els items 1-20 de 20

  • 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
    Accés restringit per política de l'editorial
    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 privacy-preserving architecture for the semantic web based on tag suppression 

    Parra Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge (Springer, 2010)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    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 (Springer, 2011)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    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 (2012)
    Article
    Accés restringit per política de l'editorial
    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
    Accés restringit per política de l'editorial
    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)
    Altres
    Accés obert
    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 ...
  • Entropy-based privacy against profiling of user mobility 

    Rodriguez Carrion, Alicia; Rebollo Monedero, David; Fornés Guardia, Jordi; Campo Vazquez, Celeste; García Rubio, Carlos; Parra Arnau, Javier; Das, Sajal K (2015-06-01)
    Article
    Accés obert
    Location-based services (LBSs) flood mobile phones nowadays, but their use poses an evident privacy risk. The locations accompanying the LBS queries can be exploited by the LBS provider to build the user profile of visited ...
  • Hierarchical categorisation of tags for delicious 

    Parra Arnau, Javier; Perego, Andrea; Ferrari, Elena; Forné Muñoz, Jorge; Rebollo Monedero, David (2012)
    Altres
    Accés obert
    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)
    Report de recerca
    Accés obert
    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 ...
  • Measuring the privacy of user profiles in personalized information systems 

    Parra Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge (Elsevier, 2014-04-01)
    Article
    Accés restringit per política de l'editorial
    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 ...
  • Mecanismo para evitar ataques por confabulación basados en code passing 

    Jaimez, Marc; Esparza Martín, Óscar; Hernández Gañán, Carlos; Parra Arnau, Javier (2009)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Los agentes móviles son entidades software formadas por código, datos, itinerario y estado, que pueden migrar de host en host autónomamente ejecutando su código. A pesar de sus ventajas, los aspectos de seguridad restringen ...
  • 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)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    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 ...
  • Nuevo criterio para la estimación de información de estado de certificados en MANET 

    Parra Arnau, Javier (Universitat Politècnica de Catalunya, 2009)
    Projecte Final de Màster Oficial
    Accés obert
    En general, la validación del estado de certificados es una operación crítica, que adquiere una mayor complejidad en las redes móviles ad-hoc (Mobile Ad-hoc Networks, MANETs). Los usuarios de las redes MANET precisan ...
  • Nuevo criterio para la estimación de información de estado de certificados en MANET 

    Muñoz Tapia, José Luis; Parra Arnau, Javier; Hernández Gañán, Carlos; Jáimez, Marc (Universidad Politécnica de Cartagena, 2009)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In general, certificate status validation is a critical operation but it is particularly complex in Mobile Ad-hoc Networks (MANETs). MANET users require solutions to manage both the lack of fixed infrastructure inside ...
  • On the measurement of privacy as an attacker's estimation error 

    Rebollo Monedero, David; Parra Arnau, Javier; Diaz, Claudia; Forné Muñoz, Jorge (2012)
    Article
    Accés obert
    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 ...
  • 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
    Accés restringit per política de l'editorial
    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 ...
  • PKIX Certificate Status in Hybrid MANETs 

    Muñoz Tapia, José Luis; Esparza Martín, Óscar; Hernández Gañán, Carlos; Parra Arnau, Javier (Springer Berlin / Heidelberg, 2009)
    Text en actes de congrés
    Accés obert
    Certificate status validation is a hard problem in general but it is particularly complex in Mobile Ad-hoc Networks (MANETs) because we require solutions to manage both the lack of fixed infrastructure inside the MANET and ...
  • Privacy protection of user profiles in personalized information systems 

    Parra Arnau, Javier; Forné Muñoz, Jorge; Rebollo Monedero, David (2012)
    Text en actes de congrés
    Accés obert
  • Privacy protection of user profiles in personalized information systems 

    Parra Arnau, Javier (Universitat Politècnica de Catalunya, 2013-12-02)
    Tesi
    Accés obert
    In recent times we are witnessing the emergence of a wide variety of information systems that tailor the information-exchange functionality to meet the specific interests of their users. Most of these personalized information ...
  • Privacy-preserving enhanced collaborative tagging 

    Parra Arnau, Javier; Perego, Andrea; Ferrari, Elena; Forné Muñoz, Jorge; Rebollo Monedero, David (2014-01-01)
    Article
    Accés restringit per política de l'editorial
    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 ...