Sun, Xiaoxun and Wang, Hua and Li, Jiuyong (2009) Microdata protection through approximate microaggregation. In: ACSC 2009: 32nd Australasian Computer Science Conference, 19-23 Jan 2009, Wellington, New Zealand.
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Microdata protection is a hot topic in the field of Statistical Disclosure Control, which has gained special interest after the disclosure of 658000 queries by the America Online (AOL) search engine in August 2006. Many algorithms, methods and properties have been proposed to deal with microdata disclosure. One of the emerging concepts in microdata protection is k-anonymity, introduced by Samarati and Sweeney. k-anonymity provides a simple and efficient approach to protect private individual information and is gaining increasing popularity. k-anonymity requires that every record in the microdata table released be indistinguishably related to no fewer than k respondents. In this paper, we apply the concept of entropy to propose a distance metric to evaluate the amount of mutual information among records in microdata, and propose a method of constructing dependency tree to find the key attributes, which we then use to process approximate microaggregation. Further, we adopt this new microaggregation technique to study $k$-anonymity problem, and an efficient algorithm is developed. Experimental results show that the proposed microaggregation technique is efficient and effective in the terms of running time and information loss.
|Item Type:||Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)|
|Additional Information:||Deposited in accordance with the copyright policy of the publisher. Copyright 2009, Australian Computer Society, Inc. This paper appeared at the Thirty-Second Australasian Computer Science Conference (ACSC2009), Wellington, New Zealand. Conferences in Research and Practice in Information Technology (CRPIT), Vol. 91. Bernard Mans, Ed. Reproduction for academic, not-for profit purposes permitted provided this text is included.|
|Uncontrolled Keywords:||microdata protection; privacy|
|Subjects:||280000 Information, Computing and Communication Sciences > 280500 Data Format > 280505 Data Security|
|Depositing User:||Mr Xiaoxun Sun|
|Date Deposited:||08 Jul 2010 12:36|
|Last Modified:||19 Sep 2012 00:04|
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