1168 search results - page 125 / 234 » Optimization strategies for complex queries |
100
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MDM
2010
Springer
14 years 8 months ago
2010
Springer
— We introduce a novel strategy for data processing in Wireless Sensor Networks (WSNs) in the case of emergency fire evacuation with stringent delay constraints. Such networks sh...
149
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SIGMOD
2006
ACM
15 years 10 months ago
2006
ACM
The current SQL standard for access control is coarse grained, in that it grants access to all rows of a table or none. Fine-grained access control, which allows control of access...
CIKM
2007
Springer
15 years 4 months ago
2007
Springer
In this paper, we study the problem of effective keyword search over XML documents. We begin by introducing the notion of Valuable Lowest Common Ancestor (VLCA) to accurately and ...
CIKM
2008
Springer
15 years 11 hour ago
2008
Springer
Structured documents contain elements defined by the author(s) and annotations assigned by other people or processes. Structured documents pose challenges for probabilistic retrie...
106
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ICC
2008
IEEE
15 years 4 months ago
2008
IEEE
—It is not possible to ensure that a network is absolutely secure. Therefore, network operators must continually change their defense strategies to counter attackers who constant...