Now showing items 1-20 of 45

    • 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 Mohamad; 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, 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-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-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 ...
    • Coherent and automatic address resolution for vehicular ad hoc networks 

      Urquiza Aguiar, Luis; Tripp Barba, Carolina; Rebollo Monedero, David; Mezher, Ahmad Mohamad; Aguilar Igartua, Mónica; Forné Muñoz, Jorge (2015)
      Article
      Open Access
      The interest in vehicular communications has increased notably. In this paper, the use of the address resolution (AR) procedures is studied for vehicular ad hoc networks (VANETs).We analyse the poor performance of AR ...
    • Coherent, automatic address resolution for vehicular ad hoc networks 

      Urquiza Aguiar, Luis; Tripp Barba, Carolina; Rebollo Monedero, David; Mezher, Ahmad Mohamad; Aguilar Igartua, Mónica; Forné Muñoz, Jorge; Estrada Jiménez, José Antonio (2017-01-01)
      Article
      Open Access
      The interest in vehicular communications has increased notably. In this paper, the use of the address resolution (AR) procedures is studied for vehicular ad hoc networks (VANETs). We analyse the poor performance of AR ...
    • Computational improvements in parallelized k-anonymous microaggregation of large databases 

      Mezher, Ahmad Mohamad; Garcia Alvarez, Alejandro; Rebollo Monedero, David; Forné Muñoz, Jorge (2017)
      Conference report
      Restricted access - publisher's policy
      The technical contents of this paper fall within the field of statistical disclosure control (SDC), which concerns the postprocessing of the demographic portion of the statistical results of surveys containing sensitive ...
    • ¿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 ...
    • Does k-anonymous microaggregation affect machine-learned macrotrends? 

      Rodríguez Hoyos, Ana; Estrada Jiménez, José; Rebollo Monedero, David; Parra Arnau, Javier; Forné Muñoz, Jorge (Institute of Electrical and Electronics Engineers (IEEE), 2018-05-16)
      Article
      Open Access
      n the era of big data, the availability of massive amounts of information makes privacy protection more necessary than ever. Among a variety of anonymization mechanisms, microaggregation is a common approach to satisfy 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
      Open Access
      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 ...
    • 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 ...