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Issue No. 09 - September (2008 vol. 20)
ISSN: 1041-4347
pp: 1181-1194
Ada Wai-Chee Fu , The Chinese University of Hong Kong, Hong Kong
Jiuyong Li , University of South Australia, Adelaide
Raymond Chi-Wing Wong , the Chinese University of Hong Kong, Hong Kong
Jian Pei , Simon Fraser Univeristy, Burnaby
Individual privacy will be at risk if a published data set is not properly de-identified. k-anonymity is a major technique to de-identify a data set. Among a number of k-anonymisation schemes, local recoding methods are promising for minimising the distortion of a k-anonymity view. This paper addresses two major issues in local recoding k-anonymisation in attribute hierarchical taxonomies. Firstly, we define a proper distance metric to achieve local recoding generalisation with small distortion. Secondly, we propose a means to control the inconsistency of attribute domains in a generalised view by local recoding. We show experimentally that our proposed local recoding method based on the proposed distance metric produces higher quality k-anonymity tables in three quality measures than a global recoding anonymisation method, Incognito, and a multidimensional recoding anonymisation method, Multi. The proposed inconsistency handling method is able to balance distortion and consistency of a generalised view.
Security and Privacy Protection, Data mining
Ada Wai-Chee Fu, Jiuyong Li, Raymond Chi-Wing Wong, Jian Pei, "Anonymization by Local Recoding in Data with Attribute Hierarchical Taxonomies", IEEE Transactions on Knowledge & Data Engineering, vol. 20, no. , pp. 1181-1194, September 2008, doi:10.1109/TKDE.2008.52
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