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173
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CCS
2007
ACM
16 years 21 days ago
2007
ACM
In this paper, we study the maintenance of role-based access control (RBAC) models in database environments using transitive closure relations. In particular, the algorithms that ...
159
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CIKM
2007
Springer
16 years 21 days ago
2007
Springer
We present Paged Graph Visualization (PGV), a new semiautonomous tool for RDF data exploration and visualization. PGV consists of two main components: a) the “PGV explorer” an...
207
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CIVR
2007
Springer
16 years 21 days ago
2007
Springer
Over the years, many Linear Discriminant Analysis (LDA) algorithms have been proposed for the study of high dimensional data in a large variety of problems. An intrinsic limitatio...
155
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COCO
2007
Springer
16 years 21 days ago
2007
Springer
We examine the communication required for generating random variables remotely. One party Alice will be given a distribution D, and she has to send a message to Bob, who is then r...
171
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ECTEL
2007
Springer
16 years 21 days ago
2007
Springer
Parallel to the societal diffusion of digital technologies, the debate on their impacts and requirements has created terms like ICT literacy, digital literacy or digital competenc...