Titlebook: Secure Data Management; 5th VLDB Workshop, S Willem Jonker,Milan Petkovi? Conference proceedings 2008 Springer-Verlag Berlin Heidelberg 200

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How Anonymous Is k-Anonymous? Look at Your Quasi-ID shown to be a necessary refinement. The concept of .-anonymity defined in a world without using QI is an interesting artifact itself, but more importantly, it provides a sound framework to gauge the use of QI for .-anonymization.

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Query Rewriting for Access Control on Semantic Webn the Semantic Web. We propose to specify the security policies for access restrictions on resources as views declared based on ontologies. Illustrated examples are presented in the paper for explaining the underlying concepts. In addition, bucket-based algorithms are proposed for supporting the query rewriting.

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An Anonymity Model Achievable Via Microaggregationversity and .-closeness. We identify some shortcomings of those models and propose a new model called (.,.,.,.)-anonymity. Also, we propose a computational procedure to achieve this new model that relies on microaggregation.

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