Now showing items 1-9 of 9

  • A comparative study of microaggregation methods 

    Mateo Sanz, Josep Maria; Domingo Ferrer, Josep (Institut d'Estadística de Catalunya, 1998)
    Article
    Open Access
    Microaggregation is a statistical disclosure control technique for microdata. Raw microdata (i.e. individual records) are grouped into small aggregates prior to publication. Each aggregate should contain at least k records ...
  • Attribute selection in multivariate microaggregation 

    Nin Guerrero, Jordi; Herranz Sotoca, Javier; Torra i Reventós, Vicenç (2008)
    Conference report
    Restricted access - publisher's policy
    Microaggregation is one of the most employed microdata protection methods. The idea is to build clusters of at least k original records, and then replace them with the centroid of the cluster. When the number of attributes ...
  • Block coordinate descent decomposition for statistical data protection using controlled tabular adjustment 

    González Alastrué, José Antonio; Castro Pérez, Jordi (2009-10)
    External research report
    Restricted access - confidentiality agreement
    Tabular data is routinely released by national statistical agencies (NSA) to disseminate aggregated information from some particular microdata. Prior to publication, these tables have to be treated to preserve information ...
  • Contributions to record linkage for disclosure risk assessment 

    Nin Guerrero, Jordi (Consejo Superior de Investigaciones Científicas (CSIC), 2009-10-15)
    Book
    Restricted access - publisher's policy
    This book is about reidentification methods, and, more especifically, about record linkage. This study is motivated on the need to assess in an accurate way the risk of disclosure within the fields of privacy preserving ...
  • Extending controlled tabular adjustment for non-additive tabular data with negative protection levels 

    Castro Pérez, Jordi (Institut d'Estadística de Catalunya, 2011)
    Article
    Open Access
    Minimum distance controlled tabular adjustment (CTA) is a recent perturbative methodology for the protection of tabular data. An implementation of CTA was recently used by Eurostat for the protection of European Union ...
  • Fix-and-relax approaches for controlled tabular adjustment 

    Baena, Daniel; Castro Pérez, Jordi; González Alastrué, José Antonio (2015-06-01)
    Article
    Open Access
    Controlled tabular adjustment (CIA) is a relatively new protection technique for tabular data protection. CTA formulates a mixed integer linear programming problem, which is challenging for tables of moderate size. Even ...
  • How to group attributes in multivariate microaggregation 

    Nin Guerrero, Jordi; Herranz Sotoca, Javier; Torra i Reventós, Vicenç (2008-04-01)
    Article
    Restricted access - publisher's policy
    Microaggregation is one of the most employed microdata protection methods. It builds clusters of at least k original records, and then replaces these records with the centroid of the cluster. When the number of attributes ...
  • Modeling projections in microaggregation 

    Nin Guerrero, Jordi; Torra i Reventós, Vicenç (2008)
    Conference report
    Open Access
    Microaggregation is a method used by statistical agencies to limit the disclosure of sensitive microdata. It has been proven that microaggregation is an NP-hard problem when more than one variable is microaggregated at the ...
  • Towards the evaluation of time series protection methods 

    Nin Guerrero, Jordi; Torra i Reventós, Vicenç (2009-02-04)
    Article
    Restricted access - publisher's policy
    The goal of statistical disclosure control (SDC) is to modify statistical data so that it can be published without releasing confidential information that may be linked to specific respondents. The challenge for SDC is to ...