Titlebook: Database Systems for Advanced Applications; 9th International Co YoonJoon Lee,Jianzhong Li,Doheon Lee Conference proceedings 2004 Springer-

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Counting Relaxed Twig Matches in a Treeurately computes selectivity estimates for each relaxed XML query, using a natural generalization of the correlated subpath tree (CST) summary structure, and (2) carefully combines these estimates by analyzing the nature of overlap between the different relaxed twig queries.

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XTree for Declarative XML Queryingost promising standard of W3C. In this paper, we introduce a new set of syntax rules called XTree, which is a generalization of XPath. XTree has a tree structure, and a user can bind multiple variables in one XTree expression. It explicitly identifies list-valued variables, and defines some natural

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On Addressing Efficiency Concerns in Privacy-Preserving Miningrmation. To encourage users to provide correct inputs, we recently proposed a data distortion scheme for association rule mining that simultaneously provides both privacy to the user and accuracy in the mining results. However, mining the distorted database can be orders of magnitude more time-consu

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Efficient Execution of Aggregation Queries over Encrypted Relational Databasesy. The challenge is to come up with logic transformation techniques and result-mapping methods so that the exact result of applying logic to data-in-the-clear is obtained by applying the transformed logic to encrypted data and mapping the result produced. In the scope of relational aggregation queri

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amputation

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