Efficient Anonymizations with Enhanced Utility

The k-anonymization method is a commonly used privacy-preserving technique. Previous studies used various measures of utility that aim at enhancing the correlation between the original public data and the generalized public data. We, bearing in mind that a primary goal in releasing the anonymized database for data mining is to deduce methods of predicting the private data from the public data, propose a new information-theoretic measure that aims at enhancing the correlation between the generalized public data and the private data. Such a measure significantly enhances the utility of the released anonymized database for data mining. We then proceed to describe a new and highly efficient algorithm that is designed to achieve k-anonymity with high utility. That algorithm is based on a modified version of sequential clustering which is the method of choice in clustering, and it is independent of the underlying measure of utility. Keywords-data privacy, mutual information, k-anonymity

• Type: Journal
• Year: 2009
• Where: ICDM
• Authors: Jacob Goldberger, Tamir Tassa
• Keywords: Data Mining, Generalized Public Data, ICDM 2009, Public Data