Improving record linkage with supervised learning for disclosure risk assessment

  • Authors:
  • Daniel Abril;Guillermo Navarro-Arribas;Vicenç Torra

  • Affiliations:
  • IIIA, Artificial Intelligence Research Institute, CSIC, Spanish Council for Scientific Research, Campus UAB s/n, 08193 Bellaterra, Catalonia, Spain;DEIC, Department of Information and Communications Engineering, UAB, Universitat Autònoma de Barcelona, 08193 Bellaterra, Catalonia, Spain;IIIA, Artificial Intelligence Research Institute, CSIC, Spanish Council for Scientific Research, Campus UAB s/n, 08193 Bellaterra, Catalonia, Spain

  • Venue:
  • Information Fusion
  • Year:
  • 2012

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Abstract

In data privacy, record linkage can be used as an estimator of the disclosure risk of protected data. To model the worst case scenario one normally attempts to link records from the original data to the protected data. In this paper we introduce a parametrization of record linkage in terms of a weighted mean and its weights, and provide a supervised learning method to determine the optimum weights for the linkage process. That is, the parameters yielding a maximal record linkage between the protected and original data. We compare our method to standard record linkage with data from several protection methods widely used in statistical disclosure control, and study the results taking into account the performance in the linkage process, and its computational effort.