620 search results - page 64 / 124 » Algorithms for Rewriting Aggregate Queries Using Views |
146
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CIKM
2008
Springer
15 years 6 months ago
2008
Springer
We propose a novel probabilistic method based on the Hidden Markov Model (HMM) to learn the structure of a Latent Variable Model (LVM) for query language modeling. In the proposed...
148
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DBSEC
2006
15 years 5 months ago
2006
Abstract. Attack graph is important in defending against well-orchestrated network intrusions. However, the current analysis of attack graphs requires an algorithm to be developed ...
166
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DEBU
2008
15 years 4 months ago
2008
Since the birth of XML, the processing of XML query languages like XQuery/XQueryP has been widely researched in the academic and industrial communities. Most of the approaches con...
138
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SACMAT
2005
ACM
15 years 9 months ago
2005
ACM
We investigate a generalization of the notion of XML security view introduced by Stoica and Farkas [17] and later refined by Fan et al. [8]. The model consists of access control ...
132
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SIGMOD
2001
ACM
16 years 4 months ago
2001
ACM
Users often need to optimize the selection of objects by appropriately weighting the importance of multiple object attributes. Such optimization problems appear often in operation...